Release Notes for
Oracle TimesTen In-Memory Database 7.0.4.0.0

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Part Number B31692-08

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This document provides late-breaking information as well as information that is not yet part of the formal documentation.

To install the Oracle TimesTen In-Memory Database, run setup from the installation media pack.

For installation information, please see the Installation Guide (install.pdf). This file is located in the doc directory of the root of the installation media pack.

This documentation contains the following sections:

1. Platforms

2. Software requirements and installation

3. Disk space requirements

4. Deliverables

5. Advance notice

6. Changes in this release

7. Known problems and limitations

8. Contacting Oracle for Oracle TimesTen support

9. Copyright information

1. Platforms

Oracle TimesTen In-Memory Database is supported in these environments:

AIX 5L 5.2 (patch level 5200-08 or greater) and 5.3 32-bit and 64-bit for POWER systems. Compiled and tested with the AIX compiler.
Asianux 2.0 for 32-bit and 64-bit Intel IA-32, EM64T and AMD64 CPUs. Compiled with gcc 3.2.3. Tested with gcc 3.2.3, 3.4.3 and 4.1.0.
HP-UX 11i, 11i v2 and 11i v3 32-bit and 64-bit for PA-RISC CPUs. Compiled and tested with the HP compiler.
HP-UX 11i v2 and 11i v3 32-bit and 64-bit for Itanium2. Compiled and tested with the HP Compiler.
HP Tru64 UNIX 5.1B for AlphaChip EV68 CPUs. Compiled and tested with Compaq C/C++ 6.5 compiler.
Microsoft Windows 2000, Windows XP and Windows Server 2003 for Intel IA-32, EM64T and AMD64 CPUs. Compiled and tested with the Intel 8 compiler. Visual C++ 6.0 and Visual C++ 7.0 (.NET) are also supported.
MontaVista Linux Carrier Grade Edition 4.0 32-bit and 64-bit for Intel IA-32, AMD64 and EM64T CPUs.Compiled with gcc 3.2.3. Tested with gcc 3.0 and 3.2. Compiled and tested with Intel 9.1. Client/Server tested with gcc 3.2.3, 3.4.6 and 4.1.0.
Oracle Enterprise Linux 4 and 5 for 32-bit and 64-bit Intel IA-32, EM64T and AMD64 CPUs. Compiled with gcc 3.2.3. Tested with gcc 3.2.3, 3.4.3 and 4.1.0. Compiled and tested with Intel 9.1. Client/Server tested with gcc 3.2.3, 3.4.6 and 4.1.0.
Red Hat Enterprise Linux AS, ES and WS 3, 4 and 5 for 32-bit and 64-bit Intel IA-32, EM64T and AMD64 CPUs. Compiled with gcc 3.2.3. Tested with gcc 3.2.3, 3.4.3 and 4.1.0. Compiled and tested with Intel 9.1. Client/Server tested with gcc 3.2.3, 3.4.6 and 4.1.0.
Red Hat Enterprise Linux AS, ES and WS 3, 4 and 5 for 64-bit Intel Itanium2 CPUs. Compiled and tested with Intel 8.1. Compiled and tested with Intel 9.1. Client/Server tested with gcc 3.2.3, 3.4.5 and 4.1.0.
Solaris 8, 9 and 10 32-bit and 64-bit for UltraSparc architecture CPUs. Compiled with Sun Studio 11. Shipped with a TimesTen client library compiled with gcc 3.2.3.
Solaris 10 32-bit and 64-bit for AMD64 CPUs. Compiled and tested with the Sun Studio 10 compiler.
SuSE Linux Enterprise Server 10 64-bit for Intel Itanium2 CPUs. Compiled and tested with gcc 4.1.0. Compiled and tested with Intel 9.1. Client/Server tested with gcc 3.2.3, 3.4.5 and 4.1.0.
SuSE Linux Enterprise Server 9 and 10 32-bit and 64-bit for Intel IA-32 and EM64T and AMD64 CPUs. Compiled with gcc 3.2.3. Compiled and tested with gcc 4.1.0. Compiled and tested with Intel 9.1. Client/Server tested with gcc 3.2.3, 3.4.6 and 4.1.0.

The Oracle TimesTen In-Memory Database TTClasses library is compiled using the same compiler that is used for building the rest of the libraries for each platform. You can determine which compiler has been used by looking in install_dir/lib and noting the name of the compiler appended to libttclasses.so. For example, libttclasses.so.gcc346 is compiled using the gcc 3.4.3 compiler. To use another compiler, you must rebuild the TTClasses library.

On Windows, the default TTClasses libraries are built with Microsoft Visual C++ 6. You can find them in install_dir/lib and install_dir/bin. The TTClasses libraries are also built with Microsoft Visual C++ 7 and Microsoft Visual C++8 are in install_dir/ttclasses/vc7 and install_dir/ttclasses/vc8 respectively. To use these libraries instead of the libraries built with Microsoft Visual C++ 6, copy the ttclasses.dll to the install_dir/bin directory and the ttclasses.lib to the install_dir/lib directory.

2. Software requirements and installation

For software requirements please refer to the Oracle TimesTen In-Memory Database Installation Guide.

3. Disk space requirements

The following table lists approximate disk space requirements for a typical installation. Requirements listed as "Movable" indicate that the component is installed in a user-specified file system at installation time. The variable install_dir represents the directory where the current release of TimesTen is installed. The TimesTen default installation directories for a root instance of TimesTen release 7.0 are:

On Windows, C:\TimesTen\tt70_bits
where bits is either 32 or 64, indicating the bit-level of the platform
On HP-UX, Solaris and Linux, /opt/TimesTen/tt70
On AIX, /usr/lpp/TimesTen/tt70

For each operating system, TimesTen installs certain files in a system directory that cannot be moved. The table assumes a root instance and indicates which files are movable.

Add 30MB to the numbers in this table if you install the TimesTen documentation.

Operating system	Installation type	File system	Movable?	Required space
Windows 2000, XP or 2003 32-bit	TimesTen Data Manager	install_dir	Yes	125 MB
	TimesTen Client	install_dir	Yes	70 MB
	TimesTen Client, Server and Data Manager	install_dir	Yes	150 MB
Windows 2000, XP or 2003 64-bit	TimesTen Data Manager	install_dir	Yes	125 MB
	TimesTen Client	install_dir	Yes	70 MB
	TimesTen Client, Server and Data Manager	install_dir	Yes	170 MB
Solaris 8, 9 and 10 32- or 64-bit	TimesTen Data Manager	install_dir	Yes	170 MB
	TimesTen Data Manager	/etc	No	50 KB
	TimesTen Client	install_dir	Yes	70 MB
	TimesTen Client, Server and Data Manager	install_dir	Yes	175 MB
	TimesTen Client, Server and Data Manager	/etc	No	50 KB
Solaris 10 x86 and x86-64	TimesTen Data Manager	install_dir	Yes	255 MB
	TimesTen Data Manager	/etc	No	50 KB
	TimesTen Client	install_dir	Yes	70 MB
	TimesTen Client, Server and Data Manager	install_dir	Yes	260 MB
	TimesTen Client, Server and Data Manager	/etc	No	50 KB
Asianux 2.0, MontaVista Linux Carrier Grade Edition 4.0, Oracle Enterprise Linux 4 and 5, Red Hat Enterprise Linux ES, AS and WS 3, 4 and 5 and SUSE Linux Enterprise Server 9 and 10 for for 32-bit for x86 CPUs	TimesTen Data Manager	install_dir	Yes	145 MB
	TimesTen Data Manager	/etc	No	50 KB
	TimesTen Client	install_dir	Yes	65 MB
	TimesTen Client, Server and Data Manager	install_dir	Yes	150 MB
	TimesTen Client, Server and Data Manager	/etc	No	50 KB
Asianux 2.0, MontaVista Linux Carrier Grade Edition 4.0, Oracle Enterprise Linux 4 and 5, Red Hat Enterprise Linux ES, AS and WS 3, 4 and 5 and SUSE Linux Enterprise Server 9 and 10 for for 64-bit for x86-64 CPUs	TimesTen Data Manager	install_dir	Yes	140 MB
	TimesTen Data Manager	/etc	No	50 KB
	TimesTen Client	install_dir	Yes	70 MB
	TimesTen Client, Server and Data Manager	install_dir	Yes	145 MB
	TimesTen Client, Server and Data Manager	/etc	No	50 KB
Red Hat Enterprise Linux ES, AS and WS 3, 4 and 5 and SUSE Linux Enterprise Server 10 for 64-bit for Intel Itanium2 CPUs	TimesTen Data Manager	install_dir	Yes	235 MB
	TimesTen Data Manager	/etc	No	50 KB
	TimesTen Client	install_dir	Yes	80 MB
	TimesTen Client, Server and Data Manager	install_dir	Yes	245 MB
	TimesTen Client, Server and Data Manager	/etc	No	50 KB
HP-UX 11i, 11i v2 and 11i v3 for 32- or 64-bit PA-RISC	TimesTen Data Manager	install_dir	Yes	180 MB
	TimesTen Data Manager	/etc	No	50 KB
	TimesTen Data Manager	/sbin	No	50 KB
	TimesTen Client	install_dir	Yes	70 MB
	TimesTen Client	/etc	No	50 KB
	TimesTen Client	/sbin	No	50 KB
	TimesTen Client, Server and Data Manager	install_dir	Yes	195 MB
	TimesTen Client, Server and Data Manager	/etc	No	50 KB
	TimesTen Client, Server and Data Manager	/sbin	No	50 KB
HP-UX 11i v2 and 11i v3 for IA32 or IA64	TimesTen Data Manager	install_dir	Yes	190 MB
	TimesTen Data Manager	/etc	No	50 KB
	TimesTen Data Manager	/sbin	No	50 KB
	TimesTen Client	install_dir	Yes	80 MB
	TimesTen Client	/etc	No	50 KB
	TimesTen Client	/sbin	No	50 KB
	TimesTen Client, Server and Data Manager	install_dir	Yes	200 MB
	TimesTen Client, Server and Data Manager	/etc	No	50 KB
	TimesTen Client, Server and Data Manager	/sbin	No	50 KB
AIX 5.2 and 5.3 32- or 64-bit	TimesTen Data Manager	install_dir	Yes	220 MB
	TimesTen Data Manager	/etc	No	50 KB
	TimesTen Client	install_dir	Yes	70 MB
	TimesTen Client	/etc	No	50 KB
	TimesTen Client, Server and Data Manager	install_dir	Yes	230 MB
	TimesTen Client, Server and Data Manager	/etc	No	50 KB
Tru64 5.1B-2 UNIX	TimesTen Data Manager	install_dir	Yes	155 MB
	TimesTen Client	install_dir	Yes	70 MB
	TimesTen Client, Server and Data Manager	install_dir	Yes	160 MB

4. Deliverables

You should receive the following with your copy of the Oracle TimesTen In-Memory Database:

Release Notes. This document (which you are now reading) covers late-breaking information not included in the formal documentation.
Oracle TimesTen Media Pack. The media pack includes the Oracle TimesTen libraries and executables, demo programs, utilities, and online documentation.

The documentation included on the media pack consists of:

Oracle TimesTen In-Memory Database Documentation Addendum. This document covers features that are new to the 7.0.4.0.0 release of TimesTen and should be used in conjunction with the following documents. The information in the following documents is current as of the 7.0.3.0.0 release and, unless noted in the doc addendum or these release notes, applies to this release. (docaddendum.pdf)
Oracle TimesTen In-Memory Database Installation Guide (Part Number B31679-03). (See the description above.) (install.pdf)
Oracle TimesTen In-Memory Database Introduction (Part Number B31687-03). This guide describes the features of Oracle TimesTen and provides information to help developers plan an Oracle TimesTen application. (intro.pdf)
Oracle TimesTen In-Memory Database Operations Guide (Part Number B31689-03). Provides information on configuring TimesTen and using the ttIsql utility to manage a data store. This guide also provides a basic tutorial for TimesTen. (operations.pdf)
Oracle TimesTen In-Memory Database C Developer's and Reference Guide (Part Number B31680-03). This guide describes how to compile and link your C application with Oracle TimesTen and how to set up and work with Oracle TimesTen data stores. It covers topics that include error handling, event management, and performance tuning. It also provides a reference for all C language-specific APIs.(C_dev.pdf)
Oracle TimesTen In-Memory Database Java Developer's and Reference Guide (Part Number B31681-02). This guide describes how to compile and link your Java application with Oracle TimesTen and how to set up and work with Oracle TimesTen data stores. It covers topics that include error handling, event management, and performance tuning. It includes information about configuring Oracle TimesTen with application servers. It also provides a reference for Java language-specific APIs. (java_dev.pdf)
Oracle TimesTen In-Memory Database API Reference Guide (Part Number B31683-03). This guide provides a reference of all Oracle TimesTen utilities, procedures, APIs and provides a reference to other features of TimesTen. (tt_ref.pdf)
Oracle TimesTen In-Memory Database SQL Reference Guide (Part Number B31682-03. This guide contains a complete reference to all TimesTen SQL statements, expressions and functions, including TimesTen SQL extensions. (sql.pdf)
Oracle TimesTen In-Memory Database Error Messages and SNMP Traps (Part Number B31690-03). This guide contains a complete reference to the TimesTen error messages and information on using SNMP Traps with TimesTen. (error_ref.pdf)
TimesTen to TimesTen Replication Guide (Part Number B31684-03). This guide provides background information to help you understand how Oracle TimesTen replication works and step-by-step instructions and examples that show how to perform the most commonly needed tasks. (replication.pdf)
TimesTen Cache Connect to Oracle Guide (Part Number B31685-03). This guide provides background information to help you understand how to create and manage a Oracle TimesTen cache for Oracle data. (cacheconnect.pdf)
Oracle TimesTen In-Memory Database TTClasses Guide (Part Number B31691-02). This guide describes the Oracle TimesTen C++ Interface Classes library. The library provides wrappers around the most common ODBC functionality. (ttclasses.pdf)
Oracle TimesTen In-Memory Database Troubleshooting Procedures Guide (Part Number B31688-03). This guide describes how to troubleshoot some of the problems users encounter when using TimesTen. (troubleshooting.pdf)
Microsoft ODBC Programmer's Manual. This Microsoft book describes the ODBC interface that is used to access Oracle TimesTen data stores. Shipments for UNIX and Windows NT include a reference on ODBC version 2.0. Oracle TimesTen supports ODBC version 2.5 on UNIX. The differences between version 2.0 and 2.5 are covered in Oracle TimesTen In-Memory Database C Developer's and Reference Guide. (ms.odbc.pdf)
Oracle TimesTen In-Memory Database Release Notes (Part Number B31692-04). (See the description above.)
Behavior Changes in Oracle TimesTen In-Memory Database (Part Number B31694-04). (behaviorchanges.txt)

If any of these items is missing, please contact Oracle for TimesTen support. See 8. Contacting Oracle for Oracle TimesTen support

5. Advance notice

5.1 Deprecated items in Release 7.0.3.0.0

The ttCacheMonitor built-in procedure is deprecated. It is supported for backward compatibility only and will be removed in a later release. TimesTen returns a warning message when you use a deprecated item.

5.2 Removed items in Release 7.0.1.0.0

This item has been removed.

The enableTables attribute is no longer supported in the JMS/XLA configuration file. Use the ttXlaBookmarkCreate, ttXlaBookmarkDelete, ttXlaSubscribe and ttXlaUnsubscribe built-in procedures for administering bookmarks.

5.3 Deprecated items in Release 7.0.1.0.0

These items are supported for backward compatibility only and will be removed in a later release. TimesTen returns a warning message when you use a deprecated item.

Threadsafe attribute. By default TimesTen supports multiple concurrent connections to the same data store.
ExclAccess attribute.TimesTen loads the data store in shared mode.
SMPOptLevel attribute.
Diskless mode of the Logging attribute and diskless data store mode
Replication of temporary data stores
SELECT FOR UPDATE ON ORACLE SQL statement
WITH LIMIT clause in CREATE CACHE GROUP and ALTER CACHE GROUP SQL statements
DURATION option in CREATE CACHE GROUP and ALTER CACHE GROUP SQL statements
Restricted cache groups
ttCachePolicy built-in procedure - Replaced by ttCachePolicySet
ttRepPolicy built-in procedure - Replaced by ttRepPolicySet
ttXlaDeleteBookmark built-in procedure - Replaced by ttXlaBookmarkDelete
JDBC classes files: The classes14.jar has been replaced with the ttjdbc14.jar. The classes15.jar has been replaced with the ttjdbc5.jar.
The ttCacheAgingMemoryThresholdSet and ttCacheAgingIntervalSet built-in procedures.

5.4 Deprecated items in Release 6.0 that are removed in 7.0.1.0.0

These items were deprecated but supported for backward compatibility in the 6.0 release of the Oracle TimesTen In-Memory Database. They have been removed from release 7.0.1.0.0.

The ttRepRRXactIdGet built-in procedure has been removed. Use ttRepXactTokenGet instead.
The ttRepRRXactStatus built-in procedure has been removed. Use ttRepXactStatus instead.
SQL_C_ADDR ODBC type has been removed.
The ttRepDuplicate and ttRepDuplicateAcc utilities APIs have been replaced by ttRepDuplicateEx.
The following name changes for built-in procedures have occurred. The old names are no longer supported.
ttCGGenSQL to ttCacheSqlGet
ttCGMonitor to ttCacheMonitor
ttCacheSetMemoryThreshold to ttCacheAgingMemoryThresholdSet
ttCacheSetAgingInterval to ttCacheAgingIntervalSet
ttCachePropagateFlag to ttCachePropagateFlagSet
ttOracleAgentStart to ttCacheStart
ttOracleAgentStop to ttCacheStop
ttOracleAgentPolicy to ttCachePolicy
ttCacheSetAgingInterval to ttCacheAgingIntervalSet
ttAdmin -oracleUidPwdSet to ttAdmin
-cacheUidPwdSet
The following command line changes to the arguments for ttAdmin, ttMigrate and ttRepAdmin -duplicate have occurred. The old argument names are no longer supported.
-oracleUid to -cacheUid
-oraclePwd to -cachePwd
ttAdmin -oracleUidPwdSet to ttAdmin
-cacheUidPwdSet
ttAdmin -oraAgentStart to ttAdmin
-cacheStart
ttAdmin -oraAgentStop to ttAdmin -cacheStop
ttAdmin -oraAgentPolicy to ttAdmin
-cachePolicy
The ttIsql command cggensql has changed to cachesqlget. The cggensql command is no longer supported.
The following name changes for SNMP traps have occurred:
Ora to Cache
Oracle Cache Agent to Cache Agent
TimesTen Oracle Connect to Timesten Cache
The TimesTen ttVars.bat script to set environment variables on Windows has been replaced by:
install_dir/bin/ttenv.bat
install_dir/demo/ttdemoenv.bat
The Timesten ttSetEnv.csh and ttSetEnv.sh scripts for setting environment variables on UNIX have been replaced by:
install_dir/bin: ttenv.csh and ttenv.sh
install_dir/demo: ttdemoenv.csh and ttdemoenv.sh

6. Changes in this release

6.1 Changes for Release 7.0.4.0.0. from Release 7.0.3.4.0

6.1.1 New features in this release

For for new platform support, syntax and information on new features in this release, see the Oracle TimesTen In-Memory Database Documentation Addendum.

Oracle Release 11gR1 is supported with TimesTen Cache Connect to Oracle on Linux x86 32-bit and 64-bit platforms, and on Windows 32-bit.
JDK 6 and JRockit are certified with TimesTen.
The Intel C compiler is supported for Linux platforms in this release.
This release supports the ability create a remote disaster recovery site when using active standby pair replication with asynchronous writethrough (AWT) cache groups.
The ttCacheAwtMonitorConfig built-in procedure has been added in this release. You can use this built-in procedure to monitor the performance of asynchronous writethrough (AWT) cache groups to determine how much time is spent performing tasks in the AWT workflow. You can use the ttRepAdmin utility with the -awtmoninfo and -showstatus commands to display the monitoring results.
In this release, the ttXlaUpdateDesc_t header in an XLA update record now includes a flag that describes aging deletes on a row. The flag is: TT_AGING. It also includes a flag that describes cascade deletes on a row. The flag is: TT_CASCDEL.
In this release, you can configure TimesTen to write a warning to the support log and throw an SNMP trap when a SQL statement execution time exceeds a user-specified query threshold in seconds. Execution continues and is not affected by the query threshold.
This release contains a new script, install_dir/bin/autorefreshCleanUp.sql. You can configure the install_dir/bin/autorefreshCleanUp.sql script to clean up the autorefresh objects in the Oracle database.
This release includes a new TimesTen main daemon option, -shmLocalityHint, that allows you to specify the locality of the shared memory segment where TimesTen data stores will exist on HP-UX ccNUMA systems.
A change in the handshake between the master data stores in an active standby pair replication configuration. If the master data stores discover that they are both in the ACTIVE state when they first connect, the data store which was set to the ACTIVE state the least recently is invalidated. When it comes back up, it is automatically set to the STANDBY state if there are no trapped transactions (replicatable transactions that cannot now be replicated due to the new role as a standby master), and is left in the IDLE state if there are such transactions. See the Oracle TimesTen In-Memory Database Documentation Addendum for more details.

6.1.2 Bug fixes in this release

JMS/XLA performance has been improved in synchronous mode. (BugDB #5945987)
A problem has been fixed where a Java batch update could fail and result in a general error exception being thrown. (BugDB # 6348331)
In previous releases, a very long running replicated transaction that continuously ran into hundreds of errors would get processed very inefficiently and slow down replication. This problem has now been fixed. (BugDB #6489318)
A problem has been fixed in which Autorefresh validation could result in a numeric range error. (BugDB #6519698)
In previous releases, if a directory specified in the message log path did not exist, the TimesTen Server would not start and TimesTen error message 400 would be returned. In this release, the TimesTen Server ignores the missing daemon log and starts. (BugDB #6530688)
In the previous release, TimesTen would use the wrong estimate during the final materialization in a join operation. This problem has been fixed. (BugDB # 6614526)
A problem has been fixed in which ttMigrate could fail with error 22003 while saving replication schema information for a 64-bit database. (BugDB #6666087).
In this release, the query optimizer has been improved to so that complex queries are prepared quickly. Previously, a complex query could take a long time to prepare and could timeout, depending on the user-specified SQLQueryTimeout value. (BugDB #6677307)
In 7.0.3.x.x, a TimesTen client would appear not to connect to a pre-6.0 TimesTen Server, and would return the warning "Undefined connection attribute." In 7.0.4, when you load a pre-6.0 TimesTen data store, the "Undefined connection attribute" warning is suppressed if it is the only warning. (BugDB #6694356)
A problem has been fixed where the subscriber data store in a replication scheme could use more heap memory than the master side and therefore run out of memory, causing replication to fail. (BugDB # 6703028)
In very rare cases, when working with an AWT cache group, a valid cache administrator user name/password combination would result in a login failure onto Oracle. In this case, TimesTen would return error message 5131 with an incorrect UID (as "root"). This problem has been fixed. (BugDB # 6712083)
In previous releases, when a user specified autorefresh, unnecessary SELECT FOR UPDATE and rollback operations would occur on the Oracle Database, even when there was no UPDATE activity on the cached table. This problem has been fixed. (BugDB # 6730151)
A problem has been fixed in which a log reader, such as a replication agent or XLA application, may trigger an assertion failure in the sbLogBlkLRPtrExpand function. (BugDB # 6732174)
In previous releases, when using replication, under certain boundary conditions, the transmitting thread would read invalid data beyond the end of the log record. This caused an incorrect Commit Ticket Number to get transmitted to the applying thread, which then rejected the transaction. In this case that AWT cache groups were being replicated, rows would be missing in the Oracle database involved. This has now been fixed by checking for the correct length before reading on the transmitter. (BugDB # 6736361, 6735874)
In previous releases, an incorrect malloc failure error would appear in the awterrs file, under certain conditions. This problem has been fixed. (BugDB # 6736460)
In previous releases, TimesTen core dumps in the ttOptEstimateStats built-in procedure when called with < 50 percent value. This problem has been fixed. (BugDB # 6754924)
A problem has been fixed where a checkpoint would not result in files log files for a temporary data store being removed from the disk. (BugDB # 6758437)
A problem has been fixed where the TimesTen cache agent would occasionally crash in the OCI library. In this release, TimesTen automatically recovers from the crash by restarting the cache agent. (BugDB # 6765879)
A problem has been fixed where altering a table and adding a foreign key might fail with error 2213 if done after a ttMigrate -r of a table that had foreign keys. (BugDB # 6774885)

6.2 Changes for Release 7.0.3.4.0 from Release 7.0.3.3.0

A problem has fixed where view column names would be lost when a SELECT statement specified an ORDER BY clause when querying the view. (BugDB #6650839)
In previous releases, an assertion could occur when a derived table was specified as an inner table of an outer join using the (+) operator but this operator was missing from some of this derived table's columns such that the outer join specification became a no-op. This problem has been fixed. (BugDB #6667195)

6.3 Changes for Release 7.0.3.3.0 from Release 7.0.3.2.0

A change in the enforcement of maximum lengths of SQL parameter values has caused a change in the behavior of the SQLDescribeParam, SQLExecute and SQLExecDirect ODBC functions.

For SQLDescribeParam, parameters that were previously reported as having type SQL_CHAR, SQL_WCHAR or SQL_BINARY are now described as having type SQL_VARCHAR, SQL_WVARCHAR or SQL_VARBINARY, respectively. This change does not apply to parameters whose values will be stored directly into the database, such as parameters found in the VALUES clause of a SQL INSERT statement or the SET clause of a SQL UPDATE statement.

For SQLExecute and SQLExecDirect, TimesTen may accept parameter values that are larger than their maximum lengths as reported by SQLDescribeParam. For example, for a table t1 with column c1 of type CHAR(10) and the following query:

SELECT * FROM t1 WHERE c1 = :a

TimesTen allows values larger than 10 characters to be bound to the :a parameter. This change does not apply to parameters whose values will be stored directly into the database, such as parameters found in the VALUES clause of a SQL INSERT statement or the SET clause of a SQL UPDATE statement. (BugDB #6658453)

6.4 Changes for Release 7.0.3.2.0 from Release 7.0.3.1.0

In previous 7.0 releases of TimesTen, a SELECT query with nested GROUP BY clauses with group by columns might return the wrong results. This problem has been fixed. (BugDB #6609276)

6.5 Changes for Release 7.0.3.1.0 from Release 7.0.3.0.0

A problem has been fixed where the maximum length of a SQL parameter could be computed to be too small, leading to spurious "String data right truncation" errors. (BugDB #5840457)
In previous releases, Timesten would replicate a foreign key violation, which would result in an assertion. This problem has been fixed. (BugDB #6415652)
A replication problem has been fixed where the active node in an active/standby pair would continue to send data after failover to standby. (BugDB #6442293)
In previous releases, the TimesTen Server would not start and a core dump would occur when daemon messages were routed to syslog. This problem has been fixed. (BugDB #6446471 and 6512391)
A problem has been fixed where the XLA reader gets progressively slower when reading a large backlog of transaction log records.

While this fix speeds up the processing of this backlog, when using XLA, users should avoid getting into a situation where the difference between the READLSNHIGH and the PURGELSNHIGH is very high by ensuring that all transactions complete in a timely manner, either by committing or rolling back. At restart time, the XLA reader must read from the beginning of the oldest unacknowledged transaction (indicated by PURGELSNHIGH and PURGELSNLOW) to the point of the last XLA acknowledgement (indicated by READLSNHIGH and READLSNLOW) before any records can be returned to the reader application. The presence of long running or long dormant transactions can cause this distance to be very large, requiring XLA to process a large number of log records during restart. (BugDB #6459488)

A problem has been fixed where a deadlock could occur during a concurrent UPDATE of an index value of an uncommitted row and a foreign key CONSTRAINT verification of a child table insert. (BugDB #640006)
In previous releases, when running TimesTen on a machine with a single CPU, under some circumstances a SELECT ... FOR UPDATE operation would fail to guarantee protection from multiple transactions accessing the same row concurrently. (BugDB #6488388)
In release 7.0.3.0.0, a 6.0 Client could not connect to a TimesTen 7.0.3.0.0 Server. Cross-release TimesTen client/server connections now work both ways between 6.0.x releases and 7.0.3.1.0 or greater releases, when the -insecure-backwards-compat option is set in the ttendaemon.options file. (BugDB #6528619)
A problem has been fixed where an assertion would occur when an UPDATE statement assigned a NULL value to a primary key column. (BugDB #6598439)

6.6 Changes for Release 7.0.3.0.0 from Release 7.0.2.5.0

6.6.1 Enhancements to supported SQL

For a description of these enhancements and their syntax, see the Oracle TimesTen
In-Memory SQL Reference Guide.

In this release, the SELECT for UPDATE syntax has been enhanced to allow subqueries.
The CREATE TABLE as SELECT statement is now supported in TimesTen.
Several previously unsupported SQL functions are supported in this release. The newly supported functions are:
ABS, ADD_MONTHS, CEIL, FLOOR, GREATEST, LEAST, LPAD, LTRIM, POWER, ROUND, RPAD, RTRIM, SIGN, SQRT and TRIM
Altering a table to add a PRIMARY KEY constraint is now supported.
The COMMIT and ROLLBACK SQL statements are now supported.

6.6.2 Other new features in this release

Support for TimesTen has been added on these platforms:
Asianux 2.0 for 32-bit and 64-bit Intel IA-32, EM64T and AMD64 CPUs.
Oracle Enterprise Linux 4 and 5 for 32-bit and 64-bit Intel IA-32, EM64T and AMD64 CPUs.
Red Hat Enterprise Linux 5 for 32-bit and 64-bit Intel IA-32, EM64T, AMD64 and
Itanium 2 CPUs.
HP-UX 11i v3 32-bit and 64-bit for PA-RISC and Itanium 2 CPUs.
The IPv6 internet protocol is supported on Solaris for x86 and SPARC CPUs and on all Linux platforms on which TimesTen is supported.
Time-based aging is now supported on columns that are of the type TT_DATE or ORA_DATE.
The JDBC PreparedStatement.executeBatch method now supports SQLRowCount and returns an array of result rows.
The built-in procedure ttMonitorHighWaterReset has been added to this release. This procedure sets the values of the PERM_IN_USE_HIGH_WATER and TEMP_IN_USE_HIGH_WATER fields of the system MONITOR table to the current values of PERM_IN_USE_SIZE and TEMP_IN_USE_SIZE, respectively.
Replication hostname resolution has been improved in this release. When creating a replication scheme, users can now determine the network interface that a master store will use for every outbound connection to each of its subscriber stores.
Users can now use SQL syntax to stop and resume conflict reporting on a replication scheme.
In a client/server environment, the child server has been modified to support multiple TimesTen connections. In previous releases, the child server only supported one TimesTen connection. The user can configure the number of connections per child Server either with TimesTen daemon options or with TimesTen data store attributes.
Parallel LOAD for cache groups is now supported, providing improved performance during cache group LOAD. This feature is configurable in the LOAD CACHE GROUP statement.
This release contains new tools to monitor the progress of cache group AUTOREFRESH. The new built-in procedure ttCacheAutorefreshStatsGet returns the most recent and cumulative AUTOREFRESH information. The ttTraceMon utility can also be configured to return AUTOREFRESH information. In addition, the release contains a SQL script that can be run to return current bookmark information.
The logging protocol for temporary data stores has been modified such that it now contains only undo information, instead of containing all the information required for a permanent data store, which also needs redo information. As a result, performance for temporary data stores has been improved in this release.
Data access across NFS-mounted systems is supported in this release for Linux clients on x86 32-bit and 64-bit systems.
A warning is returned if a user or application attempts to create a duplicate index on a table.
The maximum number of columns allowed in a table on which TTClasses methods can operate has been increased to 1000.
TimesTen now prevents the creation of an AWT cache group in a replication scheme that uses the RETURN TWOSAFE service when the replication schemes is not an Active/Standby pair.

6.6.3 Bug fixes in this release

The error message "sbLogFilesRemove: log file ... does not exist" is now suppressed from the user error log. (BugDB # 5041271)
The ttIsqlCS utility works in a configuration where a TimesTen 7.0.3.0.0 or greater client is connected to a 6.0.x release TimesTen server. (BugDB #5714405)
The -dateMode option and the DATEMODE file attribute are now supported with the ttBulkCp utility. These features allow the user to determine if the values of columns of Oracle DATE type should contain a time component or just a date component. (Bug DB #5867897)
A problem has been fixed where TimesTen could assert when using a unique index and duplicate values could occur in some cases. (BugDB #6062188 and 6113795)
The ttSize utility now supports the -frac option for indicating the fraction of the total column size used by VARCHAR and BINARY columns. TimesTen returns a warning when an overflow in the size estimate might occur. (Bug DB #6117073)
A problem has been fixed where the ttHostNameGet built-in procedure could return incorrect results. (BugDB #6128015)
A problem has been fixed that caused poor performance when the ttMigrate utility attempted to restore tables with more than 128 columns. (BugDB #6140876)
AWT cache groups are no longer supported with TWOSAFE replication schemes. See 7.5. Replication - TimesTen to TimesTen in the 7. Known problems and limitations section of these release notes for more details.(BugDB #6176733)
For Windows systems, a problem has been fixed where a client/server character set mismatch would return invalid characters. The problem would occur when using Java with a "Client only" installation of TimesTen. (BugDB #6264409 and #6270354)
A change has been made in this release that may reduce the CPU utilization of checkpoints against an idle data store. (Bug DB #6272641)
A problem has been fixed where aging would fail when rows were inserted into a AWT cache group in an Active/Standby replication configuration, if Oracle was offline. (BugDB #6313470)
A problem has been fixed where an assertion would occur due to an overflow in the sbLogBufLFNLBNToFrameno function. (BugDB #6336930)
A problem has been fixed where TimesTen would return inconsistent results when a query was executed using a t-tree scan that contained several duplicate values. (BugDB #6337679)
In previous releases, following a failover and recovery, updates that had been made on TimesTen would not appear on Oracle. This problem would occur in an Active/Standby replication configuration that contained AWT cache groups. This problem has been fixed. (BugDB #6364759 and #6364743)

6.7 Changes for Release 7.0.2.5.0 from Release 7.0.2.4.0

A problem has been fixed where creating a table with 1000 columns could result in a crash. (Bug DB #6140446)
The ttSchema utility no longer outputs CREATE CACHE GROUP statements with autorefresh state ON. Autorefresh state ON is saved in a SQL comment. ttSize now includes a -frac option for indicating the fraction of total column size used by varchars and binaries. Also, it emits errors when an overflow in the size estimate would occur. (Bug DB #6152718)
In previous releases, when the outer join operator (+) was specified with a column of a simple derived table (without aggregation) and the parser decided to optimize this derived table by flattening it out, the outer join operator would be lost and the join with the derived table would be done as an inner join. This problem has been fixed. (Bug DB #6262983)

6.8 Changes for Release 7.0.2.4.0 from Release 7.0.2.3.0

JDBC performance is improved in this release. (Bug DB #6041957)
In this release, the ttSchema utility no longer outputs CREATE CACHE GROUP statements with AUTOREFRESH state ON. The cache group is created with the default AUTOREFRESH state. The AUTOREFRESH state ON is now saved in a SQL comment. (Bug DB #6057939)
A problem has been fixed where a core dump could occur with JMS/XLA. (Bug DB #6111821)
A problem has been fixed where a core dump could occur when updating a materialized that existed across multiple partitions. (Bug DB #6130781)
On Windows, a problem has been fixed where the TimesTen main server would leak thread handles if there were multiple active connections. (Bug DB #6143790)

6.9 Changes for Release 7.0.2.3.0 from Release 7.0.2.2.0

In previous releases, TimesTen would acquire a table lock on a cache table during a REFRESH CACHE GROUP WITH ID or a transparent load operation that used parameters. In this release, TimesTen does not acquire a table lock during these operations. (Bug DB #6133182)

6.10 Changes for Release 7.0.2.2.0 from Release 7.0.2.1.0

A problem has been fixed where some transactions on that were present on the active store in an active/standby pair would not be present on the standby store during rollout. (Bug DB #6041143)
In previous releases, SQL_NUMERIC was not supported in PassThrough mode when using TimesTen Cache Connect to Oracle. This problem has been fixed. SQL_NUMERIC is supported with passthrough to Oracle. (Bug DB #6057504)
In previous releases, an assertion could occur when concurrent updates that used a t-tree index scan with some non-index conditions attempted to update the same row. This problem has been fixed. (Bug DB #6062188)
In previous releases, a problem existed where multi-threaded 64-bit Java applications could result in a core dump. This problem has been fixed. (Bug DB #6110160)
A problem has been fixed where duplicate values could exist in a unique t-tree index and an assertion could occur. (Bug DB #6113795)

6.11 Changes for Release 7.0.2.1.0 from Release 7.0.2.0.0

On the Windows 64-bit platform, the SetLockMemoryPrivilege OS privilege has been added for the TimesTen service.
TimesTen can support large processor cache page entries on 64-bit Windows systems running Windows Server 2003 SP1 and on other versions that support large pages. A list of supported systems is available at http://msdn.microsoft.com by searching for "GetLargePageMinimum()".

For TimesTen to be able to allocate large pages, enable the SetLockMemoryPrivilege OS privilege by performing the following steps:

1. In the Control Panel, select Administrative Tools > Local Security Policy.

2. Select Local Policies > User Rights Assignment.

3. Double-click "Lock pages in memory".

4. Add the users and groups used by the TimesTen service.

5. Reboot the machine.

If TimesTen is successful in allocating large pages, then ttStatus will display "(LARGE PAGES, LOCKED)".

6.12 Changes for Release 7.0.2.0.0 from Release 7.0.1.0.0

The ttMigrate utility now supports updating or estimating statistics for tables and materialized views as they are restored. The ttMigrate -r command now accepts the optional -updateStats or -estimateStats percentRows command-line flags to perform these tasks.
In this release, you can use MapMessage.getLong and to MapMessage.getString to access DATE and TIMESTAMP fields. MapMessage.getLong returns microseconds since UNIX epoch (00:00:00 UTC, January 1, 1970) and it is more efficient than MapMessage.getString. However, MapMessage.getLong does not support nanosecond precision. If you require nanosecond precision for TIMESTAMP, use MapMessage.getString.
TimesTen does not operate on NFS-mounted systems in this release. The
-allowNetworkFiles daemon option, which existed only in the 7.0.1.0.0 release, has been disabled in this release.
In previous releases, when two or more readers, using separate JMS sessions called Message.acknowledge at about the same time, one call could fail with TimesTen error 8031. This problem has been fixed. (Bug DB #5653780)
A problem has been fixed where fragmentation would occur on passive subscriber data stores in a replicated scheme, due to heap allocations occurring from only one of the three heaps. (BugDB# 572904)
In previous releases the ttRepSubscriberFailedTrap would be thrown when a TCP connection failed. This would cause the log to fill up as TimesTen retried the connection. The SNMP trap ttRepTCPFailedTrap has been added in this release and is thrown in the case that the TCP connection has failed. (BugDB# 5862800)
This release attempts to avoid problems caused by applications mistakenly performing operations on file descriptors opened by XLA. Previously, when an application closed, read from, or seeked on a file descriptor opened by XLA, errors or assertions could result. XLA can now detect and recover from many such application errors. This functionality is intended to make XLA more resilient to application errors and also to help application programmers detect and fix such errors. It is not possible for XLA to detect or recover from all such errors. Therefore it is still very important for application developers to fix these errors. (Bug DB# 5866888)
In previous releases, a problem existed where the TTCommand::ExecuteImmediate method would not call Drop if it got an error. This problem has been fixed. (BugDB# 5895768)
In previous releases, a problem existed where a NULL valued column in a materialized view in an outer join might not get updated. This problem has been fixed. (BugDB#5908860)
In this release, there are improvements to the SQL compiled command cache. (Bug DB #5899760)
The number of hash buckets has been increased from 32 to 129.
The hash algorithm has been improved.
This release also includes the new built-in procedure ttSqlCmdCacheInfoGet. This built-in takes no parameters and returns the result set:
cmdCount - number of commands in the cache.
freeableCount - number of freeable commands that can be garbage collected by the subdaemon at that moment.
size - the current total space allocated to store all the cached commands.
A problem has been fixed where the ttSize utility could return the error "value for -rows must be a number" when no rows were specified. (BugDB# 5898208),
A problem has been fixed where it was not possible to create a data store larger than 2GB on a MontaVista 64-bit system. (BugDB# 5909588)
In TimesTen 7.0.1.0.0, a 32-bit client application running on a 64-bit Windows system could not connect to a 64-bit TimesTen Server. This problem has been fixed. (BugDB# 5916382)
The error message that is returned when an attempt to duplicate data stores from different TimesTen releases has been improved to indicate that the TimesTen releases may not match. (BugDB# 5937159)
Fast path join planning is improved in this release. (BugDB# 5941648)
A problem has been fixed where a query with a NOT IN clause that has more than 255 values on Linux systems or 269 values on Solaris systems would hang. (BugDB# 5954612)

6.13 Changes for Release 7.0.1.0.0 from Release 7.0.0.0.0

6.13.1 New items in Release 7.0.1.0.0

The Windows TimesTen installation now contains TTClasses libraries built with Microsoft Visual C++ 6, 7 and 8.
On Windows installations, the TimesTen default instance name is now ttrelease_bit. For example, a 32-bit instance of TimesTen 7.0.1.0.0 is named tt70_32 by default. The demo DSN names also now contain the bit level, for example: RunData_tt70_32 or RunData_tt70_64.
The SQL functions LENGTH4, LENGTHB, SUBSTR4, SUBSTRB, INSTR4, INSTRB are supported in this release.
The TransparentLoad data store attribute has been added in this release.
Support for ResultSet.getCharacterStream and PreparedStatement.setCharacterStream is included in this release.
On UNIX systems, silent batch uninstall is now supported.
The Oracle TimesTen In-Memory Database Architectural Overview is now titled Oracle TimesTen In-Memory Database Introduction.
The Oracle TimesTen In-Memory Database Recommended Programming Practices is no longer shipped in the install_dir/doc directory. You can find this document on the Oracle Technical Network (OTN) website, where it will be updated frequently, including between releases of TimesTen.
The -linuxLargePageAlignment daemon option has been added in this release to support Linux large pages.
The options -verbosity and -remoteDaemonPort are now available with the ttRepAdmin -duplicate operation to allow replication where the daemon ports are not identical
The options -recoveringNode and -deferCacheUpdate are now available with the ttRepAdmin -duplicate operation. These options facilitate duplication of data stores that contain cache groups when the Oracle Database is unavailable.
The default value for the CkptLogVolume data store attribute is now 0.
The TimesTen TT_STMT_PASSTHROUGH_TYPE option has been added to the SQLGetStmtOption ODBC function. The option can be used to determine whether a specific prepared statement will be passed through to Oracle by the passthrough feature of Cache Connect to Oracle. See the Oracle TimesTen In-Memory Database C Developer's Guide and Reference (C_dev.pdf).
The location of the JMS/XLA configuration file can be specified by the user.
See the Oracle TimesTen In-Memory Database Java Developer's Guide and Reference Guide(java_dev.pdf).
JRockit is supported with TimesTen on Solaris 64-bit systems on SPARC and x86 CPUs.

6.13.2 Bug fixes in Release 7.0.1.0.0

In previous releases, if no commit occurred after cache group creation, an attempt to transparently load Oracle data into the cache group resulted in an assertion. In this release, the operation exits gracefully with an error. (BugDB#5620835)
A problem has been fixed where transparent load of Oracle data into a cache group during a SELECT operation would fail if a CHAR column was specified in the WHERE clause. (BugDB#5620947)
A problem has been fixed where a SQL operation on a cache group would fail to pass through to Oracle, when there was an empty string in the SELECT list. (BugDB#5636129)
In this release, the ttMigrate utility now properly migrates sequences cache values. (BugDB#5659154)

6.14 Changes for Release 7.0.0.0.0 from Release 6.0.7

Starting with the TimesTen 7.0.0.0.0 release, the product version number is comprised of a 5-part number as follows:

TimesTen Product Version = Major.Minor.Patch.Dot4.Dot5

Major specifies a major release version where the release contains both infrastructure and functionality changes in the product.
Minor specifies a minor release version where new significant features are added to the product without major infrastructure changes.
Patch specifies a maintenance release that rolls up all bug fixes since the previous maintenance release.
Dot4 specifies the version for a bug fix release that cannot wait for the next scheduled Patch release.
Dot5 is reserved for special cases.

6.14.1 New features in release 7.0.0.0.0

Oracle TimesTen supports the Oracle semantics for the following data types:
CHAR
NCHAR
VARCHAR2
NVARCHAR2
BINARY_FLOAT
BINARY_DOUBLE
NUMBER
DATE
TIMESTAMP

Applications upgrading from previous versions of Oracle TimesTen should use the new data store creation attribute TypeMode=1. This enables a backward compatibility mode, providing the data type semantics of previously released TimesTen data types instead of the new Oracle data type semantics of this release. TypeMode is set to 0 (Oracle data type semantics) by default. TypeMode must equal 0 when using Cache Connect features.

Oracle TimesTen provides globalization support. This feature includes:
Storage and manipulation of non-ASCII data in CHAR/VARCHAR2 columns
Locale-specific collation of all character data types
Linguistic sorts and linguistic indexes
Character set support

A data store must be created with a specific database character set. The data store and the connection can have different character sets. TimesTen handles conversion between the database character set and the connection character set.

A modified Oracle HR schema is distributed with this release of TimesTen. It is used in some examples in the Oracle TimesTen In-Memory Database SQL Reference Guide.
Two forms of automatic data aging are introduced in this release and are available for tables that are in cache groups and for tables that are not in cache groups. The forms of aging are usage-based (least recently used) and time-based. Time-based aging can be used by an application to cache a sliding window of data in Oracle TimesTen.

6.14.2 SQL enhancements

Enhancements to supported SQL statements

The ON DELETE CASCADE clause is supported. When rows containing referenced key values are deleted from a parent table, rows in child tables with dependent foreign key values are also deleted.
A T-tree index on the primary key is created if the UNIQUE HASH ON ... PAGES= option is omitted from the CREATE TABLE statement.
A row value constructor with degree greater than 1 is supported.
Subqueries in the HAVING clause are supported.
Subqueries in the left operand of a predicate are supported as long as there are no subqueries in the right operand. (Subqueries in the right operand continue to be supported. If there is a subquery in the right operand, there can be no subqueries in the left operand.)
Expressions are supported in GROUP BY clauses.
SELECT FOR UPDATE allows the specification of tables that need to be locked for update.
When a query specifies an outer join operator (+), the query can specify a subquery.
The MINUS and INTERSECT set operators are supported.
Set operators (UNION, MINUS, INTERSECT) can be specified in a view definition.
Updating a primary key to the same value is supported.
A value list of an IN predicate that contains only one entry does not require parentheses.
The ROWNUM pseudocolumn is supported.
FIRST N and N TO M clauses can contain parameters.
Tables can contain up to 1000 columns.
The performance of SQL queries has been enhanced.

New SQL statements

The MERGE statement is used to select rows from one or more sources to update or insert into a target table.
The ALTER SESSION statement can be used to change the following session parameters dynamically: NLS_SORT, NLS_LENGTH_SEMANTICS, NLS_NCHAR_CONV_EXCP.

New SQL functions

The CHR(n) function returns the character having binary value n in the database character set. The result is a VARCHAR2 data type.
The NCHR(n) function returns the character having Unicode value n. The result is an NVARCHAR2 data type.
The UNISTR(string) function resolves the string to an NVARCHAR2 data type.
The ASCIISTR(string) function resolves the string to ASCII characters. Non-ASCII characters are converted to Unicode escapes.
The COALESCE function returns the first non-null expression in the expression list.
The DECODE function compares an expression to each search value one by one.
The TO_NUMBER function converts a character string, a binary float or a binary double data type to a number data type.
The TRUNC (expression) function returns a number truncated to a specified number of decimal places.
The TRUNC (date) function returns a date with the time portion of the day truncated to the unit specified by the format model.
The NLSSORT function returns the sort key value for a specified string.

For details on these SQL operations, see the Oracle TimesTen In-Memory Database SQL Reference Guide (sql.pdf).

6.14.3 XLA and JMS/XLA enhancements

XLA subscriptions to a table can be made at the bookmark level. Unlike in pre7.0 releases, XLA subscriptions do not apply to all bookmarks.
XLA can retrieve table and column version information for a specific change update record. It can also check table definition compatibility with a change update record.
The JMS/XLA API can be used to replicate updates from a source data store to a target data store.

6.14.4 Client/server enhancements

A 6.0 client can connect to a 7.0 data store and a 7.0 client can connect to a 6.0 data store. Use the -insecure-backwards-compat daemon option to connect a 6.0 client to a 7.0 data store. See the Oracle TimesTen In-Memory Database Operations Guide for details (operations.pdf).
The -stopserver option for the ttDaemonAdmin utility can be used with the -force option to stop child server processes before stopping the main TimesTen server process.

6.14.5 Cache Connect to Oracle enhancements

Usage-based (least recently used) and time-based aging can be configured for cache groups.
Oracle TimesTen can be configured to automatically load data from Oracle tables into cache group tables when a SELECT query does not find data in the cache group tables. See the TimesTen Cache Connect to Oracle Guide (cacheconnect.pdf).

6.14.6 Replication enhancements

When replicating between 7.0 and pre-7.0 data stores, use the -insecure-backwards-compat daemon option to connect to these data stores. See the Oracle TimesTen In-Memory Database Operations Guide (operations.pdf) for details.
An active standby pair with read-only subscribers can now be used with Cache Connect to Oracle. This configuration supports read-only cache groups with the AUTOREFRESH cache group attribute and asynchronous writethrough cache groups. A major advantage of this configuration is that in the case of a failover of the master to the standby, a full autorefresh on the standby data store is no longer needed.
A replication master can have up to 128 subscribers.
A replication conflict report can be generated in XML format. See the TimesTen to TimesTen Replication Guide (replication.pdf).

6.14.7 Utilities enhancements

The ttAdoptStores utility is new. On UNIX systems, it moves data stores from a TimesTen instance to a new TimesTen instance that is of the same minor version.
The ttIsql utility has new functionality, including the ability to set and show attributes and to save command history.

6.14.8 Enhancements to built-in procedures

The ttConfiguration built-in procedure can be used to query ODBC attributes for a data store.
The ttLockWait built-in procedure allows lock wait values to be specified with 100-millisecond granularity.
The ttOptShowJoinOrder built-in procedure can be used to display the optimizer's join order.

6.14.9 New built-in procedures

ttAgingLRUConfig - Sets and displays the Least Recently Used (LRU) aging policy for tables defined with usage-based aging.
ttAgingScheduleNow - Start the aging process immediately, or at the time desired, if used in an external scheduler.
ttCachePolicyGet - Returns the policy used to determine when the TimesTen cache agent for the connected data store should run.
ttCachePolicySet - Defines the policy used to determine when the TimesTen cache agent for the connected data store should run.
ttConfiguration - Returns the value of most ODBC connection attributes for the current connection.
ttHostNameGet - Returns the name of the local host that is used by replication.
ttHostNameSet - Sets the name for the local host for the current data store to be used by replication. Useful for nonstandard network configurations.
ttOptGetMaxCmdFreeListCnt - Returns the size of the SQL compiled command cache.
ttOptSetMaxCmdFreeListCnt - Sets the size of the regular SQL compiled command cache.
ttOptSetMaxPriCmdFreeListCnt - Sets the size of the SQL compiled command cache for commands that maintain materialized views.
ttRamPolicyGet - Returns the policy used to determine when the data store is loaded into system RAM.
ttRamPolicySet - Sets the policy used to determine when the data store is loaded into system RAM.
ttRepPolicyGet - Returns the policy used to determine when the data store is loaded into system RAM.
ttRepPolicySet - Defines the replication restart policy used to determine when the TimesTen Replication Agent for the connected data store should run.
ttRepTransmitGet - Returns the status of transmission of updates to subscribers for the current transaction.
ttRepTransmitSet - Stops subsequent updates on the connection it is executed in from being replicated to any subscriber.
ttXlaBookmarkCreate - Creates the specified bookmark.
ttXlaBookmarkDelete - Deletes the specified bookmark.

For details on these built-in procedures, see the Oracle TimesTen In-Memory Database API Reference Guide (tt_ref.pdf).

6.14.10 New attributes

DatabaseCharacterSet - Identifies the character set used by the data store. This attribute is required at data store creation time. There is no default.
TypeMode - Indicates the data type mode for the data store. Default is 0.
ConnectionCharacterSet - Specifies the character encoding for the connection. Default is US7ASCII unless database character set is TIMESTEN8.
NLS_LENGTH_SEMANTICS - Sets the default length semantics configuration. Default is BYTE.
NLS_NCHAR_CONV_EXCP - Determines whether an error is reported when there is data loss during an implicit or explicit character type conversion between NCHAR/NVARCHAR2 data and CHAR/VARCHAR2 data. Default is 0.
NLS_SORT - Indicates the collating sequence to use for linguistic comparisons. Default is BINARY.

For details on these attributes, see the Oracle TimesTen In-Memory Database API Reference Guide (tt_ref.pdf).

6.14.11 New daemon options

You can specify the following new options in the ttdaemon.options file:

-supportlog. Default is daemonhome/ttmesg.log.
-maxsupportlogfiles. Default is 10.
-maxsupportlogsize. Default is 0x100000.
-userlog. Default is daemonhome/tterrors.log.
-maxuserlogfiles. Default is 10.
-maxuserlogsize. Default is 0x100000.

6.14.12 Other enhancements

The default log buffer size has been increased to 64 MB.
The TempSize attribute defaults to at least 6 MB. The value for this attribute is still derived from the PermSize value.
In read-committed isolation mode with no concurrent scans in serializeable isolation, multiple updates of the same row in the same transaction or deletion of row that has been inserted in the same transaction do not place a next lock.
The ODBC driver uses the SQL data types supplied by an application for passthrough statements.
No rows are locked during the gathering and computation of column and row statistics for optimizer use.
The BINARY_FLOAT and BINARY_DOUBLE SQL types support the IEEE floating point values Inf (positive infinity), -Inf (negative infinity), and NaN (not a number).

7. Known problems and limitations

7.1 Access Control

On Windows systems, where Oracle TimesTen has been installed with Access Control enabled, you cannot subsequently perform a "modified" or incremental installation. For example, if you originally installed only the Oracle TimesTen Client and later wanted to install the Oracle TimesTen Data Manager, you need to first uninstall Oracle TimesTen and reinstall all the components you wish to have on your system.

7.2 Installing and uninstalling Oracle TimesTen

On HP-UX operating systems, when using the Veritas filesystem, set the options discovered_direct_iosz and max_direct_iosz to 3MB before installing TimesTen. See the Oracle TimesTen In-Memory Database Documentation Addendum for details.
TimesTen does not support SELinux. When installing Linux for use with TimesTen, make sure that the SELinux option is disabled.
On Windows 64-bit systems, TimesTen 32-bit and 64-bit instances cannot co-exist on the same machine.
Online upgrades from a release prior to the 7.0.0.0.0 release of TimesTen to this release are not supported when the data store contains one or more cache groups. You must manually create the cache groups and load them into the newer TimesTen data store.
DSNs created with a Beta release of TimesTen 7.0.0.x.x are not compatible with TimesTen 7.0.1.0.0 or greater. You should remove those DSNs before working with this release of TimesTen.
Use the Modify option on the Windows InstallShield Wizard to uninstall Cache Connect to Oracle.
On Windows, when Oracle TimesTen is uninstalled from a compact installation, the timesten root directory is removed. When Oracle TimesTen is uninstalled from a typical installation, the timesten root directory remains, but it is empty.
On Linux systems, along with setting kernel.shmmax, users with configurations over 8GB may need to set the kernel.shmall parameter. The value is in KBytes and should be equal to ceil(SHMMAX/PAGE_SIZE). Page size is generally 4K on x86 and 16K on Itanium systems.
For example, for a 64GB data store on Itanium, you need not only kernel.shmmax=68719476736 but also kernel.shmall=4194304.
When re-installing Oracle TimesTen, existing sys.odbc.ini and sys.ttconnect.ini files are optionally saved as sys.odbc.ini.old and sys.ttconnect.ini.old files and new demo files are installed. In this case, you must manually merge any additional DSNs that may have been defined after reinstalling.
If you are installing Oracle TimesTen on a new RedHat Linux system, you may find that it is not enabled for 32-bit applications. According to the Redhat Enterprise Linux installation guide: 'Users of AMD64, Intel(R) EM64T, and Itanium systems who want support for developing or running 32-bit applications are encouraged to select the Compatibility Arch Support and Compatibility Arch Development Support packages to install architecture specific support for their systems.'

7.3 TTClasses

TTClasses is not supported with gcc 3.0 on 64-bit Linux. This is because optimized builds
(-O) with gcc 3.0 on 64-bit Linux/IA-64 have been shown to have different (incorrect) runtime behavior (related to exception throw-and-catch), as compared with debug builds on the same platform with the same compiler. Use gcc 3.2 or gcc 3.4 on 64-bit Linux when compiling TTClasses.
A problem with TTClasses causes NCHAR / NVARCHAR2 parameters and columns to be bound incorrectly. This results in parameter and column data being transferred to/from the database without a null terminator.

7.4 Cache Connect to Oracle

Currently, when an AWT cache group is created and the replication agent is not started, data inserted into cache group tables gets logged in the TimesTen database. These changes are propagated to Oracle once the replication agent is started. However, if an Active/Standby pair is created before the agent is started, none of these changes ever gets propagated to Oracle. The work around for this is:
After the cache group is created, if the user decides to insert rows before starting the replication agent, the AWT data is in the transaction log on TimesTen and not propagated to Oracle. The user needs to start the replication agent once it is done inserting before the creation of Active/Standby pair.
Once the replication agent is started, call the ttRepSubscriberWait built-in procedure on the TimesTen node (A/S pair is not created yet). This ensures that all the data is flushed to Oracle. A sample execution of this built-in is
call ttRepSubscriberWait(,,,,60);
The possible return codes from this call are:
0x00 - All data has been propagated
0x01 - We have not finished propagating data. In this case wait a little longer and call ttRepSubscriberWait again. (It would also be worth checking replication is actually advancing by calling the ttBookMark built-in procedure).
Once this call returns, stop the replication agent. The Active/Standby pair is then created and you should start the replication agent again.
TimesTen internal testing ran into two known Oracle OCI bugs that may cause the TimesTen cache agent to crash and/or multi-threaded applications that use TimesTen Cache Connect to crash. The bugs have be identified and confirmed. The problem exists in the Oracle client 10.2.0.1 version and above. The fixes are not released yet. (BugDB #6674731)
In an Active/Standby scheme with AWT cache groups, if network of the Active/Standby nodes gets partitioned from the Oracle Server, the TimesTen node stops accepting new connections.

When this problem occurs, take these steps:

Kill (kill -9) the replication agent process.
Stop the cache agent with this command:
ttAdmin -cacheStop master1
or with the ttCacheStop built-in procedure with the preferred time out. The default timeout is 100 seconds.
Restart the cache agent with this command:
ttAdmin -cacheStart master1
When caching BINARY_DOUBLE or BINARY_FLOAT types from an Oracle server, you must use an Oracle 10g Release2 or greater OCI client.
An assertion failure can occur when a large cache group is flushed and the connection to Oracle is lost during the flush. The flush operation must flush more than 10 MB of data for the assertion failure to occur.
A Cache Connect application may fail with a core dump during an OCIServerAttach call when SQL*Net tracing is set to level 16 for Oracle client version 10.2.0.1.0 on the Solaris X86 64-bit platform. This is due to the OCI problem reported in BugDB # 6407026.
With Passthrough=3, if you call setTimestamp on a passthrough statement when binding more than one field, the session NLS_TIMESTAMP_FORMAT is lost. You can work around this issue by changing the SQL statement to use TO_TIMESTAMP(?, 'syyyy-mm-dd hh24:mi:ss.ff9') and TO_DATE(?,'syyyy-mm-dd hh24:mi:ss').
To use the Cache Connect to Oracle option on UNIX, make sure that the Oracle libraries in $ORACLE_HOME/lib32 and/or $ORACLE_HOME/lib are readable by the user running TimesTen.
When using the Cache Connect to Oracle option on a 64-bit Windows system, if you are using 32-bit TimesTen, you must install a 32-bit Oracle client.
When creating or modifying cache groups in the Cache Administrator, the time-based aging option is enabled only when the selected root table is verified to contain a TIMESTAMP column. This verification may take longer than expected. If you are sure that the selected root table contains a TIMESTAMP column but the time-based aging option is not enabled, please be patient, eventually the option will be enabled.
If a duplicate operation is used to recover a failed TimesTen node that contains an AUTOREFRESH cache group and the Oracle Database is unavailable, a full autorefresh can occur if there are further cascading TimesTen node failures and intermittent connectivity problems with the Oracle Database.
You should prevent any "dangling rows" (rows without a corresponding parent row) in a cache group. Dangling rows may become stale and not get refreshed properly through a manual refresh or autorefresh operation. They may not get removed through unload or aging operations, and they may not be updated on Oracle through a flush statement.
When running different versions of Oracle Client and Server, the cache agent may crash with a core file. This is due to an Oracle client bug. See Metalink Note 342791.1 or Bug 4499298. The bug is fixed in Oracle 10g R2 10.2.0.1.0, Oracle 10g R1 10.1.0.5.0 and Oracle 9i R2 9.2.0.8.0. This fix affects both Client and Server, so the fix needs to be applied on both Client and Server.
If you are configuring Cache Connect to Oracle for use with RAC, use one of the following Oracle client releases:
Oracle10g Release 2 10.2.0.1.0 or greater
Oracle 9i Release 9.2.0.8.0 or greater
When you use the Cache Administrator and an error occurs when creating a cache group, any warnings that were generated are displayed with the error. However, if only warnings were generated, then those warnings are not displayed.
If an autorefresh cache group table has a key column whose name is an Oracle keyword such as TIMESTAMP, the user may receive the following error from the CREATE CACHE GROUP SQL statement:
ORA-06553: PLS-320: the declaration of the type of this expression is incomplete or malformed rc = -1
Do not use Oracle keywords as names of key columns.
When using the Cache Administrator, some actions result in the following error: "Cannot find server or DNS Error".
User applications with the passthrough level set to 1 or 2 may behave differently in Oracle TimesTen 7.0.0.0.0 because of Oracle TimesTen SQL enhancements. Certain statements may no longer cause a syntax error and will be executed on Oracle TimesTen instead of Oracle.
When using the Cache Connect to Oracle option, the following JDBC methods are not supported with Oracle pass-through modes 1 through 3: PreparedStatement.setAsciiStream, PreparedStatement.setUnicodeStream, PreparedStatement.setBinaryStream, PreparedStatement.setCharacterStream.
On Windows, when using Oracle directory server, the cache agent may encounter an access violation in the Oracle library orantcp9.dll. This is a known Oracle problem (ref. Oracle MetaLink Doc ID Note:234794.1). The signature of the problem displays the following failures 0xc0000005 (access violation) in ORANTCP9.dll or 0x80010105 (unknown exception) in KERNEL32.dll. The workaround is to use Oracle tnsnames.ora instead of the directory server.

7.5 Replication - TimesTen to TimesTen

TWOSAFE transactions involve special transaction processing that includes special log records. As such, TWOSAFE replication is designed to support a two store configuration only. TWOSAFE replication with one or more AWT cache groups is not supported.
Due to a defect in TimesTen Cache Connect release 6.0.2, it is not possible to replicate cache groups between release 6.0.2 and any other TimesTen release. Consequently, online upgrades do not work for cache groups between 6.0.2 and any other release of TimesTen.
ttMigrate does not support replication schemes that define replication elements on tables that are not present on the local data store.
Under very rare circumstances, it is possible for a pair of replicated detail tables and their corresponding materialized view to diverge. This divergence can only happen if the materialized view satisfies both of the following conditions:
The view definition has 2 or more predicates
One of the predicates contains an expression that can generate an exception such as numeric overflow, division by zero or string truncation

Replicating an update to a detail table can cause divergence if differences in the order of predicate evaluation on the two data stores cause a predicate to be evaluated and generate an exception only on the receiving data store. The store will then reject the update, resulting in divergence of the detail table and the materialized view. To prevent such divergence, users should avoid replicating materialized views that have predicates that can generate exceptions during expression evaluation. The SQL CAST operator can be used in some cases to avoid arithmetic overflow.

If you create a new replication scheme in 5.1 or later that uses a DATASTORE element, you cannot migrate backwards, for example to 5.0 or 4.5. A scheme involving a DATASTORE element created in an Oracle TimesTen release older than 5.1 can be migrated to 5.1 and then migrated back to an older release.
Foreign key and uniqueness constraints cannot be checked at the "statement level" if ttXLAApply is used to implement replication.

For replication to work efficiently, it must be able to quickly translate host names of peers into IP addresses. For this to happen efficiently on Windows, make sure that a Windows machine is set up to query either a valid WINS server or a valid DNS server that has correct information about the hosts on the network. In the absence of such servers, static HOST-to-IP entries can be entered in either a
%windir%\system32\drivers\etc\hosts or %windir%\system32\drivers\etc\lmhosts
file.
Without any of these four options, a Windows machine resorts to broadcasting, which is extremely slow, to detect peer nodes. Also, if the Windows machine cannot communicate with a defined WINS server or DNS server, or if incorrect information is stored on those servers, the hostname resolution will be extremely slow. Use the ping command to test whether a host can be efficiently located. The ping command should immediately respond if host name resolution is set up properly.

When changing the state of a replication receiver (that is, to "start" or "stop") when replication has been configured to use a secondary IP address, a misconfiguration may cause ttRepAdmin to print the error: Alter replication with "ALTER REPLICATION ... port 0" failed: TT0907: Unique constraint (REPSTORESIX) violated. This error is caused by replication not recognizing the local data store. This situation can be confirmed by the following query:
SELECT * FROM ttrep.ttstores WHERE is_local_store <> 0x0;
If this query returns either no rows, or a row with the data store's main host name set to the result of the "hostname" command rather than the host you specified, you have encountered a configuration problem with /etc/hosts.
To correct the problem, you must make sure that the special host name you are using is defined in /etc/hosts and that there is an IP address in common between your special host name and the result of the "hostname" command.
Example: your "hostname" command returns "softswitch" and your machine has two Ethernet cards with the addresses 10.10.15.136 and 192.168.15.136. Then the IP addresses defined for "softswitch" should include both IP addresses.

7.6 Client/Server

The Oracle TimesTen In-Memory Database Installation Guide documents procedures for "Performing a Client/Server online upgrade from a TimesTen version prior to 6.0." After TimesTen 7.0. is installed, you must also perform the following step:

From install_dir_70 copy libttco.so to install_dir_51.

When setting multiple client connections to a TimesTen server, you should not set the stack size (using the -ServerStackSize daemon option or ServerStackSize attribute) to less than 64KB on 64-bit systems and 48KB for 32-bit systems. If the stack size is too small, the TimesTen Server dies with SIGSEGV on most UNIX system, or SIGBUS on HP-UX.
On Unix, when using ttlocalhost, a client of one TimesTen instance cannot connect with a server of another TimesTen instance. The workaround is to use ttShmHost (shared memory IPC) or localhost (127.0.0.1).
While using shared memory as IPC, the application may see the error message 24 from the Client Driver if the application reaches the system-defined, per process file-descriptor-limit. This may happen during a connect operation to the Client DSN when the shmat system call fails because the application has more open file descriptors than the system-defined per-process file-descriptor-limit.

7.7 Connection attributes

Preallocate should be a first connection attribute, but it is implemented as a data store creation attribute.

7.8 Utilities, procedures, and SQL

When using scalar functions that accept TIME, DATE or TIMESTAMP data types as arguments, you must prefix the function with a literal indicating the data type. For example:

SELECT GREATEST (TIME '10:10:10', TIME '12:12:12' ) FROM DUAL;

If you do not specify the datetime literal, TimesTen treats the data type as CHAR. Functions that accept datetime literals as arguments are: GREATEST, LEAST, ROUND and ADD_MONTHS.

TimesTen does not support the data type TIME in the functions ADD_MONTHS and ROUND.

ROUND(date) is supported only for Oracle DATE types.
For ROUND (date), ADD_MONTHS, GREATEST, and LEAST FUNCTIONS: An assertion may occur during ODBC statement PREPARE:
When using either a CASE expression or the DECODE function as one of the arguments to the function and the expected data type is datetime AND
The return values of either the CASE expression or the DECODE function are NULL or parameter binding (i.e.: decode (x,0,NULL, ?)).

For example:

SELECT GREATEST (CASE WHEN 'A' LIKE '__' THEN? END, TIME '11:11:11') FROM DUAL;

As a workaround, CAST the bind variable or NULL value to the expected datetime data type:

SELECT GREATEST (CASE WHEN 'A' LIKE '__' THEN CAST (? as TIME) END, TIME '11:11:11') FROM DUAL;

The ORDER BY clause is not supported in a CREATE TABLE AS SELECT statement.
A multi-lingual sort (NLS_SORT) operation that includes a LIKE clause returns incorrect results when the sort is specified with the _CI or _AI extension.
The maximum sum of the total number of tables specified in a query and all temporary aggregates needed to handle the query is 32. A temporary aggregate is needed to handle scalar or aggregate subqueries. A query fails with the message "Statement that needs more than 31 nesting levels has not been implemented" when the sum of tables and temporary aggregates in a query is greater than 32.
COUNT distinct with CHAR type uses binary sorting order and binary comparison semantics even when the NLSSORT attribute was set to a value different than binary.
When the NLS_SORT session parameter is set to a multilingual sort (e.g. FRENCH_M), the LIKE operator may produce incorrect results when the pattern match wild-card symbols are applied to the space character.
SQL query strings in JDBC applications should contain only characters from the database character set. Unicode characters not in the database character set are converted to replacement characters during parsing of the query. Potential workarounds include:
Using AL32UTF8 as the database character set.
Parameterizing the query so as to avoid non-database character set characters in the query text.
The TO_CHAR SQL function provides inconsistent results (truncates or rounds) when applied to BINARY_FLOAT and BINARY_DOUBLE values. TO_CHAR also truncates some NUMBER values that should instead be rounded.
The MERGE statement may not be used to insert into or update from a detail table of a materialized view.
A MERGE operation on a data store where logging to disk is disabled returns an error and fails.
If an application process on HPUX is connected to an Oracle TimesTen data store and if the application process calls the ttXactIdRollback utility API for a transaction associated with the same data store, the call may fail due to the inability to attach to the shared memory segment for the data store.
The fourth argument ("stats") to the ttOptSetColIntvlStats built-in procedure is a compound structure that cannot be parameterized using ODBC functions. This means that a statement such as the following will fail:
SQLPrepare(hstmt, "call ttOptSetColIntvlStats('t1', 'c1', 1, ?)", SQL_NTS); Similarly, the ttIsql describe command fails because the "stats" argument does not have one of the known types.

7.9 JDBC

ResultSet.getString() does not work correctly in client/server mode for DATE fields with data for the B.C. time period. Please use ResultSet.getTimestamp() as a workaround.
JDK 5.0 is not available for AIX or for Itanium 64-bit on Linux AS 3.0.
Please refer to the article at http://java.sun.com/developer/technicalArticles/Intl/USDST for impact of U.S. Daylight Saving Time Changes in 2007 on Java applications and solutions. For other JDK/JRE providers, please consult your vendor documentation.
On HPUX 11 systems, 32-bit JDBC client and direct drivers cannot co-exist in one JVM due to some problems with loading shared libraries.
If a JDBC application running in a time zone that has Daylight Savings Time selects a non-existent time using ResultSet.getTimestamp, it gets a time that is an hour behind. For example, in Pacific Standard Time, on the day when the time changes from Standard to Daylight Savings Time, the time between 2:00 a.m. and 2:59 a.m. does not exist. So, if a JDBC application running in Standard Time selects a value of `2002-04-07 02:00:00' using getTimestamp it will get `2002-04-07 01:00:00'.
Cache Connect to Oracle JDBC applications may deadlock in the Solaris thread library when establishing an Oracle connection. This is due to known bugs in Oracle and Solaris (Oracle bugs 2095266 and 2002293, SUN case id 62645007). This occurs when using Oracle TimesTen Cache Connect to Oracle with the Java JDK 1.4 or greater, on Solaris. The work around on Solaris 8 is to change LD_LIBRARY_PATH to use the alternate thread library in /usr/lib/lwp. For example:
setenv LD_LIBRARY_PATH=/usr/lib/lwp:$LD_LIBRARY_PATH

7.10 JMS/XLA

JMS/XLA depends on Oracle GDK for internationalization support. The timestenjmsxla.jar includes a version of the orai18n.jar that JMS/XLA is tested against. JMS/XLA may work with other versions of orai18n.jar but it is not guaranteed. Please refer to Oracle TimesTen In-Memory Database Java Developer's and Reference Guide for other details. Here are some suggestions for working around this issue:
If you have an Oracle 11g Java application that does not need JMS/XLA, do not include the timestenjmsxla.jar in the CLASSPATH.
If you have an Oracle11g Java application that requires JMS/XLA, include the orai18n.jar from 11g before the timestenjmsxla.jar in the CLASSPATH.
To avoid throughput issues, JMS/XLA applications running on Linux in general, and Red Hat Linux 3 in particular, should follow performance guidelines presented in the section entitled "Handling high event rates" in the Oracle TimesTen In-Memory Database Java Developer's Guide to work around these issues.

8. Contacting Oracle for Oracle TimesTen support

For information about obtaining technical support for Oracle TimesTen products, go to the following Web address: http://www.oracle.com/support/contact.html

9. Copyright information

Copyright ©1996, 2008, Oracle. All rights reserved.

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February 5, 2008

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