Sun Java System Application Server Platform Edition 8.1 2005Q2 Update 2 Release Notes

- Previous: About Application Server Platform Edition 8.2 2006Q1
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# Known Issues and Limitations

This section describes known problems and associated workarounds for the Sun Java System Application Server Platform Edition 8.2 2006Q1 product. If a summary statement does not specify a particular platform, the problem applies to all platforms. This information is organized into the following sections:

- Administration

- Application Client

- Container Managed Persistence

- Deploytool

- Documentation

- Installation

- Lifecycle Management

- Logging

- Security

- Upgrade Utility

- Web Container

## Administration

### The `package-appclient` script does not work if `domain1` is not present. (ID 6171458)

By default, there is a hard-coded value in `$INSTALL/lib/package-appclient.xml` for the `AS_ACC_CONFIG` variable for `domain1` that is pointed to by `asenv.conf`. If `domain1` is deleted and a new domain created, the `AS_ACC_CONFIG` variable is not updated with the new domain name, which causes the `package-appclient` script to fail.

#### Solution

Do one of the following:

- Leave `domain1` intact, and create your other domains around it.

- Remove `domain1` and replace the hard-coded value for `domain1` in `$INSTALL/lib/package-appclient.xml` with the new domain name. This will have to be done every time a new domain is created if `domain1` is not present.

### Cannot restore backed-up domain with another name. (ID 6196993)

Mirroring of a domain on the same Application Server installation cannot be performed using the `backup-domain` and `restore-domain` commands because the domain cannot be restored using a different name than the original, even though the `asadmin restore-domain` command provides an option to rename the domain. Renaming the backed-up domain appears to succeed, but attempts to start the renamed domain fail because the entries in the domain configuration are not changed, and `startserv` and `stopserv` use the original domain name to set paths.

#### Solution

The domain name used for `restore-domain` must be the same as that used for the original `backup-domain` command. The `backup-domain` and `restore-domain` commands in Application Server 8.2 work only for backing up and restoring the same domain on the same machine.

### Starting Application Server with additional JMX Agent is not supported. (ID 6200011)

J2SE 1.4.x, 5.0, or later can be configured on the Application Server. An integral feature of J2SE 5.0 platform is the ability to start a JMX agent. This is activated when you explicitly set system properties at the server startup.

Example values include:

    name="com.sun.management.jmxremote" value="true"
    name="com.sun.management.jmxremote.port" value="9999"
    name="com.sun.management.jmxremote.authenticate" value="false"
    name="com.sun.management.jmxremote.ssl" value="false"

After configuring JMX properties and starting the server, a new `jmx-connector` server is started within the Application Server VM. An undesirable side-effect of this is that the administration functions are affected adversely, and the Application Server administration GUI and CLI may produce unexpected results. The problem is that there are some conflicts between the built in `jmx-connector` server and the new `jmx-connector` server.

#### Solution

If using `jconsole` (or any other JMX-compliant client), consider reusing the standard JMX Connector Server that is started with Application Server startup.

When the server starts up, a line similar to the one shown below appears in the server.log. You can connect to the `JMXServiceURL` specified there and perform the same management/configuration operations after successfully providing the credentials; for example:

    [#|2004-11-24T17:49:08.203-0800|INFO|sun-appserver-ee8.1|javax.enterprise.
    system.tools.admin|_ThreadID=10;|ADM1501: Here is the JMXServiceURL for the
    JMXConnectorServer: [service:jmx:rmi:///jndi/rmi://hostname:8686/management/
    rmi-jmx-connector]. This is where the remote administrative clients should
    connect using the JSR 160 JMX Connectors.|#]

For more information, refer to the Sun Java System Application Server 8.2 Administration Guide.

### Cannot redeploy or undeploy the web module that is the default web module of any virtual server. (ID 6204799)

If the web module is specified as the default web module of a virtual server, and you try to redeploy or undeploy it, you will get the following error:

    Trying to undeploy application from domain failed; Virtual Servers [server]
    have <WEB-MODULE-NAME\> as default web module. Please remove the default web
    module references first. ; requested operation cannot be completed Virtual
    Servers [server] have <WEB-MODULE-NAME\> as default web module. Please
    remove the default web module references first.

At this point, `domain.xml` is in an error state, and the Admin Console may not be able to display the table that shows the deployed web applications. The condition will persist even if the domain is stopped and started again.

#### Solution

Change the default web module.

#### To change the default web module

1. Using the Admin Console, go to the virtual server page, and change the default web module to empty or specify another web module.

2. Using the CLI, undeploy the web module by specifying `domain` as the target.

       # asadmin undeploy --target domain <WEB-MODULE-NAME\>

   The Admin Console should be fine now, and the web module can be deployed again, if desired.

### `FrameworkError` exception after deploying a WAR and JAR to PE server via the AMX API in the Application Server GUI. (ID 6201462)

When an application is deployed on PE using the AMX API and not referenced, the Application Server GUI throws errors while displaying that application. AMX requires that you explicitly handle references for your applications. For example, when an application is deployed, the `DeployedItemRefConfig` needs to be explicitly created. To simplify the deployment process, references are assumed to be present in PE, which in turn causes the issue with Application Server GUI.

#### Solution

Always create the reference to a resource or application after creating it.

### The Administration Console functionality for selecting cipher suites is not working correctly. (ID 6654726)

When selecting Http-Listeners "Support All Cipher Suites,? the check boxes are disabled, but become enabled again when the page is refreshed, even though the "Support All..." box is checked. Although this might seem to be a problem, after a certificate nickname has been entered and Save has been clicked, the changes are written to the configuration.

Solution

No action required. The changes have been saved.

## Application Client

This section describes known application client issues and associated solutions.

### Library JAR packaged in Application Client Archive overwrites MANIFEST file. (ID 6193556)

If you have a top level JAR file inside your client JAR (in this case, reporter.jar), when you deploy the client JAR, the MANIFEST file for that JAR overwrites the MANIFEST file for the client JAR.

#### Solution

None at this time.

### Dynamic content technologies, such as CGI-bin and SHTML, are no longer supported. (ID 6373043)

Dynamic content technologies, such as CGI-bin and SHTML, are no longer supported.

#### Solution

Use JSP and Web service technologies instead.

## Container Managed Persistence

This section describes known container managed persistence issues and associated solutions.

### An EJBQL query may not contain all matching results if the `where` clause contains an `OR` operator and a single-valued `cmr` navigation. (ID 6184864)

If the `where` clause in an EJBQL query contains an `OR` operator and a single-valued `cmr` navigation, the query result will not contain the result for rows in which the navigation path is `null` even though the navigation path is in a different `OR` clause.

For example, consider a schema comprising `Employee`, `Department`, and `Insurance`. `Employee` has a 1:Many relationship with `Department` and a 1:1 relationship with `Insurance`:

    select Distinct Object(e) from Employee e
            where e.name = ’John’ OR e.department.name = ’Engineering’

The above query will not return employees whose name is `John` and does not belong to any department.

    select Distinct Object(e) from Employee e
            where e.department.name = ’Engineering’ OR e.insurance.name = ’xyz’

The above query will not return any employee whose insurance name is `xyz` and does not belong to any department. It will also not return any employee whose department name is `Engineering` and does not have any insurance.

#### Solution

Execute the query for each `OR` condition separately and merge the results.

## Deploytool

This section describes known Deploytool issues and associated solutions.

### Deploytool often will not create `message-destination` elements in the following Sun deployment descriptors (ID 6197393):

- `sun-application-client.xml`

- `sun-ejb-jar.xml`

- `sun-web.xml`

  A JMS destination resource specified as the JNDI Name in the Message Destinations tab may not be saved to the Sun descriptor. After specifying the Destination Name (for example, `PhysicalQueue`, a physical destination created with `create-jmsdest`) and pressing Enter, the Destination Name appears under Display Name, and the client or bean name appears in the Producers list. After typing “`jms/Queue`” in the Sun-specific JNDI Name text field and pressing Enter, the application does not show as “`(changed)`” in the title bar, and an error is written to `~/.deploytool/logfile`. When saving the application and going back to the tab, the JNDI Name field is blank again. When viewing the Sun descriptor using Tools\>Descriptor Viewer\>Application Server Descriptor, the `<message-destination\>` element within the `<jndi-name\>` element has not been created.

  The problem is that during a deploytool session, the first time a value is entered for a Message Destination JNDI Name, the value appears correct in the Sun descriptor but an `IllegalArgumentException` is thrown by `org.netbeans.modules.schema2beans.BeanProp.setElement()`. Subsequent changes or additions of a Message Destination JNDI Name in the same application or other applications will not be saved to the Sun descriptor.

#### Solution

To edit an existing JNDI Name of a Message Destination:

#### To edit an existing JNDI name

1. Delete the existing JNDI Name by leaving the JNDI Name text field blank and pressing Enter.

2. Type the new JNDI Name and press Enter.

3. Review the Sun descriptor by clicking Tools\>Descriptor Viewer\>Application Server Descriptor.

4. Save the application by clicking File\>Save.

   If the JNDI Name is not saved to the Sun descriptor:

5. Restart deploytool.

6. On the Message Destinations tab, select a Message Destination or add a new Message Destination.

7. Enter the JNDI Name for the Message Destination in the Sun-specific JNDI Name text field, and then press Enter.

8. Review the Sun descriptor by clicking Tools\>Descriptor Viewer\>Application Server Descriptor.

9. Save the application by clicking File\>Save.

   Repeat the above steps each time a value needs to be entered in the Sun-specific JNDI Name on the Message Destinations tab, unless a value is being entered in the JNDI Name text field for the first time during a deploytool session.

### Broken panels in the New Web Service Wizard (ID 6198981)

This problem manifests with two sets of symptoms:

- Clicking Next on the WSDL File panel does not go to the next panel, and an exception is thrown:

      java.lang.NoClassDefFoundError: com/sun/org/apache/xpath/internal/XPathAPI

- On Create Packaged Endpoint panel, select Create Web Service Endpoint and Package. Clicking Finish on the Next Steps panel does not create the Endpoint module in the output directory, and an exception is thrown:

      java.lang.NoClassDefFoundError: com/sun/org/apache/xpath/internal/XPathAPI.

  The problem is that `xalan.jar`, which contains the `XPathAPI.class`, is missing from the `CLASSPATH`. Note that this problem does not exist with JDK 5.0.

#### Solution

Add `xalan.jar` to the `CLASSPATH includes` for the `s1as-deploytool` process of install_dir`/lib/processLauncher.xml`; for example:

    includes="appserv-assemblytool.jar,activation.jar,appserv-admin.jar,
    appserv-cmp.jar,appserv-rt.jar,j2ee.jar,jaxrpc-impl.jar,appserv-ext.jar,
    deployhelp.jar,admin-cli.jar,dom.jar,xercesImpl.jar, xalan.jar"

### “Home” incorrectly translated as “installation directory” in Deploytool for Simplified Chinese. (ID 6203658)

When you create an Enterprise Bean in deploytool, and then navigate to the Transaction or Security tab for the bean node, the “Local Home” and “Remote Home” labels are incorrectly translated as “Local Installation Directory” and “Remote Installation Directory.”

## Documentation

This section describes known documentation issues and associated solutions.

### Some documented monitoring features do not apply to Platform Edition. (ID 6202255)

The documentation for AMX (Application Server Management eXtenstions) does not specify some monitoring features that are not available in Application Server Platform Edition 8.2. Specifically, the components that cannot be monitored in the Platform Edition are as follows:

- Production Web Container (PWC):

  - PWC HTTP Service

  - PWC Connection Queue

  - PWC ThreadPool

  - PWC DNS

  - PWC KeepAlive

  - PWC File Cache

  - PWC Virtual Server

  - PWC Request

  Webmodule

  - `SessionSize`

  - `ContainerLatency`

  - `SessionPersistTime`

  - `CachedSessionsCurrent`

  - `PassivatedSessionsCurrent`

  StatefulSessionStore

  - `CheckpointCount`

  - `CheckpointSuccessCount`

  - `CheckpointErrorCount`

  - `CheckpointedBeanSize`

  - `CheckpointTime`

#### Solution

None needed. These statistics are not relevant for Platform Edition.

### The `- asadmin create-domain --help` command produces incorrect usage and an invalid option is documented (`--admin.jmxport`). (ID 6207862)

The help command for `asadmin create-domain` describes `--admin.jmxport`, which is not a valid option for this command.

#### Solution

The `--admin.jmxport` cannot be used with the `asadmin create-domain` command.

### `AppservPasswordLoginModule` referenced as `AbstractPasswordLoginModule` in documentation (ID 6229682)

The “Realms” section in Chapter 2, “Securing Applications,” in the Sun Java System Application Server Platform Edition 8.2 2006Q1 Developer’s Guide incorrectly refers to extending `com.sun.appserv.AbstractLoginModule`, however this class is now named `com.sun.appserv.AppservLoginModule`.

#### Solution

Refer to `com.sun.appserv.AppservLoginModule` instead of `com.sun.appserv.AbstractLoginModule`.

### The Javadoc for several AMX interfaces and methods is either missing or incorrect (several IDs):

- Getter methods for `NumConnAcquired` and `NumConnReleased` statistics are missing from `ConnectorConnectionPoolStats` and `AltJDBCConnectionPoolStats`. These getter methods will be added in a future release as `getNumConnAcquired()` and `getNumConnReleased()`.

- Calling the following methods in `EJBCacheStats` will throw an exception: `getPassivationSuccesses()`, `getExpiredSessionsRemoved()`, `getPassivationErrors()`, `getPassivations()`. This will be fixed in a future release.

- The AMX MBeans may require several seconds after server startup before they are all registered and available for use. A future release will make it possible to determine when the AMX MBeans are fully loaded.

- The constant `XTypes.CONNNECTOR_CONNECTION_POOL_MONITOR` is misspelled (“`NNN`”). This will be corrected in a future release.

### Documentation on getting a physical Connection from a wrapped Connection is no longer correct (ID 6486123)

As a result of other defects (possibly 6295215) the code provided in the Obtaining a Physical Connection from a Wrapped Connection in Sun Java System Application Server Platform Edition 8.1 2005Q2 Update 2 Developer’s Guide section of Chapter 11, Using the JDBC API for Database Access, in Sun Java System Application Server Platform Edition 8.1 2005Q2 Update 2 Developer’s Guide is not correct. Specifically, the line:

    Connection drivercon = ds.getConnection(con);

should now read:

    Connection drivercon = ((com.sun.gjc.spi.DataSource)ds).getConnection(con);

## Installation

This section describes known installation/uninstallation issues and associated solutions.

### Intermittent failure to render the Next navigation button on installer and uninstaller Welcome screen. (4977191)

This problem has been reported intermittently on the Solaris x86 platform, but it is possible that it also affects Solaris SPARC and Linux platforms.

The problem is that the installer\qs or uninstaller\qs first screen correctly displays the full text and “Help” and “Cancel” buttons, but the “Next” button necessary to navigate to the next screen is not visible. Although button is not visible, its area is active and if you click on it, navigation to the next screen proceeds normally. The cause of the problem is intermittent J2SE GUI repaint issue.

#### Solution

One workaround is to click on the Next button area just to the left of the Help button. Another workaround is to force repainting of the screen by resizing it slightly or by minimizing and restoring the installer window. After repainting, the missing Next button will become visible.

### Installation shutdown hanging on some Linux systems after clicking the Finish button. (5009728)

This problem has been observed on several Linux systems. It is most common on Java Desktop System 2 but has also been observed on RedHat distributions.

After clicking the Finish button on the last installer screen, the installer fails to launch a browser window containing the product About page or product registration page, and hangs indefinitely, not returning the command prompt.

#### Solution

Exit the installer by pressing Ctrl+C in the terminal window in which the installer was started. After doing this, browser window containing product About page or registration page will sometimes be launched, but if it does not show up, start the browser and enter following URL in order to review About page:

`file://install_dir/docs/about.html`

If you also selected the installation option to register the product, follow the link to registration page available on product About page.

### Intermittent J2SE detection and bootstrap issues in install wrapper on Linux. (6172980)

The `setup` executable that launches the Linux installer sometimes hangs. Instead of resolving the J2SE location and starting the install wizard, the wrapper hangs and returns the following messages:

    Chcking available disk space....
    Checking Java(TM) 2 Runtime Environment....
    Extracting Java(TM) 2 Runtime Environment....
    Deleting temporary files.....

This issue is seen only in some versions of Linux, and seems to depend on environment settings, especially the presence of the `JAVA_HOME` variable.

#### Solutions

To work around this issue:

#### To work around the bootstrap issues on Linux

1. Unset the `JAVA_HOME` variable by running `unset` or `unsetenv` depending on your shell.

2. Run `setup` with the `-javahome` option to specify the `JAVA_HOME` used by the installer.

## Application Server does not support NFS.

For this release, Application Server does not support Network File System (NFS).

### Solution

None.

## Lifecycle Management

This section describes known lifecycle management issues and associated solutions.

### After setting the `ejb-timer-service` property `minimum-delivery-interval` to `9000`, an attempt to set the `ejb-timer-service` property `redelivery-interval-in-mills` to `7000` causes the `set` command to fail with the following error: (ID 6193449)

    [echo] Doing admin task set
    [exec] [Attribute(id=redelivery-interval-internal-in-millis) : Redelivery-
    Interval (7,000) should be greater than or equal to Minimum-delivery-
    interval-in-millis (9,000)]
    [exec] CLI137 Command set failed.

- `minimum-delivery-interval` is the minimal interval duration between deliveries of the same periodic timer.

- `redelivery-interval-in-mills` is the time the timer service will wait after a failed `ejbTimeout` before attempting redelivery.

  The problem is that the logic that relates the redelivery interval property to the minimum delivery property is incorrect and prevents you from using the GUI or the CLI to set any value where the minimum delivery interval is greater than redelivery interval.

  The `minimum-delivery-interval-in-millis` must always be set equal to or higher than ejb-timer-service property `redelivery-interval-in-millis`. The problem is that there is an erroneous validation check in the Application Server to verify that the value for `redelivery-interval-in-millis` is greater than the value for `minimum-delivery-interval-in-millis`.

#### Solution

Use the default values for these properties, as follows:

    minimum-delivery-interval(default)=7000
    redelivery-interval-in-millis(default)=5000

Values other than these defaults will generate an error.

## Logging

This section describes known logging issues and solutions.

### Setting debug statement for `access.failure` causes hanging in Application Server startup. (ID 6180095)

Setting the `java.security.debug` option for the JVM will cause the server instance startup to freeze with a deadlock; for example, setting the following in `domain.xml` causes the problem:

    <jvm-options\>-Djava.security.debug=access,failure</jvm-options\>

#### Solution

None at this time. Please avoid setting this flag.

## Security

This section describes known security issues and solutions.

### Specifying target message by `java-method` does not work in `client-side` `message-security-binding` elements. (ID 6155080)

This problem occurs, for example, when a target message in a `client-side` `message-security-binding` element is specified by `java-method` within a `port-info` element within a `service-ref` element:

    <!ELEMENT service-ref ( service-ref-name, port-info*, call-property*, wsdl-
    override?, service-impl-class?, service-qname? )\>
    <!ELEMENT port-info ( service-endpoint-interface?, wsdl-port?, stub-
    property*, call-property*, message-security-binding? )\>
    <!ELEMENT message-security-binding ( message-security* )\>
    <!ELEMENT message-security ( message+, request-protection?,
    response-protection? )\>
    <!ELEMENT message ( java-method? | operation-name? )\>

The `message-security-binding` element is used here to define message protection policies for specific methods of a web service endpoint.

#### Solution

Use an `operation-name` element within the `message` element to identify by WSDL operation name the message to which the protection policies defined in the containing `message-security` element apply.

## Upgrade Utility

This section describes known Upgrade utility issues and associated solutions.

### Domains created in custom-path other than install_dir`/domains` directory are not upgraded directly while upgrading from Application Server Platform Edition 8 to Application Server Platform Edition 8.2. (ID 6165528)

When running the Upgrade Utility and identifying the install_dir as the source installation directory, the upgrade process upgrades only those domains that are created under install_dir`/domains` directory. Domains created in other locations are not upgraded.

#### Solution

Before starting the upgrade process, copy all the domain directories from their different locations to the install_dir`/domains` directory.

### Port conflict when starting `domain1` or `samples` domain after upgrading from 8.0 Platform Edition to 8.2 Platform Edition. (ID 6202188)

After upgrading an 8.0 Application Server with multiple domains, the domains may not be able to start simultaneously due to having the same port number configured for the JMX connector.

#### Solution

Change the port value.

#### To change the port value

1. Check the install dir `/domains/domain1/config/domain.xml` file, for the following entry:

       <jmx-connector accept-all="false" address="0.0.0.0" auth-realm-name=
       "admin-realm" enabled="true" name="system" port="8686" protocol="rmi_jrmp"
       security-enabled="false"/\>" -- and in file <as 8.1 install dir\>
       /domains/domain1/samples/config/domain.xml, notice it used the same port
       "8686", so it failed to start domain due to port conflict.

2. Change the port value `8686` to `8687`, and then restart `domain1`.

### The installer running “Upgrade in place” fails to start upgrade tool on some Linux systems after clicking on the “Start Upgrade Wizard” button. (6207337)

This problem has been observed on several Linux systems, it is most common on Java Desktop System 2 but has also been observed on RedHat distributions.

After clicking the Start Upgrade Tool button on the final installer screen, the installer fails to launch the upgrade tool to complete the upgrade process, and hangs indefinitely, not returning the command prompt.

#### Solution

This issue is not encountered if command line installation mode is used to run upgrade in place.

#### To use command line installation mode

1. If you ran upgrade in place in GUI mode and encountered this problem, exit the installer by pressing Ctrl+C in the terminal window in which the installer was started.

2. Start upgrade tool from the terminal window, using following command:

       install_dir/bin/asupgrade --source install_dir/domains --target install_dir
       --adminuser adminuser--adminpassword adminpassword --masterpassword changeit

   adminuser and adminpassword should match the values used for the installation you are upgrading.

3. When the upgrade tool completes the upgrade process you can also start the browser and enter following URL in order to review About page:

   `file://install_dir/docs/about.html`

   If you also selected the installation option to register the product, follow the link to registration page available on product About page.

## Web Container

This section describes known web container issues and associated solutions.

### Deploying an application using `--precompilejsp=true` can lock JAR files in the application, causing later undeployment or redeployment to fail. (Windows only) (ID 5004315)

If you request precompilation of JSPs when you deploy an application on Windows, later attempts to undeploy that application or to redeploy it (or any application with the same module ID) will not work as expected. The problem is that JSP precompilation opens JAR files in your application but does not close them, and Windows prevents the undeployment from deleting those files or the redeployment from overwriting them.

Note that undeployment succeeds to a point, in that the application is logically removed from the Application Server. Also note that no error message is returned by the `asadmin` utility, but the `application\qs` directory and the locked jar files remain on the server. The `server\qs` log file will contain messages describing the failure to delete the files and the `application\qs` directory.

Attempts to redeploy the application after undeploying fail because the server tries to remove the existing files and directory, and these attempts also fail. This can happen if you try to deploy any application that uses the same module ID as the originally deployed application, because the server uses the module ID in choosing a directory name to hold the application\qs files.

Attempts to redeploy the application without undeploying it first will fail for the same reasons.

#### Diagnostics

If you attempt to redeploy the application or deploy it after undeploying it, the `asadmin` utility returns an error similar to the one below.

    An exception occurred while running the command.  The exception message
    is: CLI171 Command deploy failed : Deploying application in domain failed;
    Cannot deploy. Module directory is locked and can\qt be deleted

#### Solutions

If you specify `--precompilejsps=false` (the default setting) when you deploy an app, then this problem will not occur. Be aware that the first use of the application will trigger the JSP compilation, so the response time to the first request will be longer than for later requests.

Note also that if you do precompile, you should stop and restart the server before undeploying or redeploying the application. The shutdown frees the locked JAR files so the undeployment or redeployment after the restart can succeed.

### Unable to deploy WAR with Servlet 2.4-based `web.xml` that contains an empty `<load-on-startup\>` element. (ID 6172006)

The optional load-on-startup servlet element in a web.xml indicates that the associated servlet is to be loaded and initialized as part of the startup of the web application that declares it.

The optional content of this element is an integer indicating the order in which the servlet is to be loaded and initialized with respect to the web `application\qs` other servlets. An empty `<load-on-startup\>` indicates that the order is irrelevant, as long as the servlet is loaded and initialized during the startup of its containing web application.

The Servlet 2.4 schema for `web.xml` no longer supports an empty `<load-on-startup\>`, meaning that an integer must be specified when using a Servlet 2.4 based web.xml. If specifying an empty `<load-on-startup\>`, as in `<load-on-startup/\>`, the `web.xml` will fail validation against the Servlet 2.4 schema for `web.xml`, causing deployment of the web application to fail.

Backwards compatibility issue. Specifying an empty `<load-on-startup\>` still works with Servlet 2.3 based `web.xml`.

#### Solution

Specify `<load-on-startup\>0</load-on-startup\>` when using a Servlet 2.4 based `web.xml` to indicate that servlet load order does not matter.

### Using the AMX API, removing a J2EE application reference from a server removes the application, but the application is still accessible. (ID 6173248)

When using the AMX API, removing a reference to an application without first explicitly stopping the application results in that application still being accessible. This behavior is by design, and is a documentation omission.

#### Solution

To remove an application so it is no longer accessible:

#### To remove an application

1. Stop the application.

2. Remove the reference to the application.

3. Undeploy the application.

### Unable to compile JSP page on resource constrained servers. (ID 6184122)

The JSP page is accessed but fails to compile, and the server log contains the error message “`Unable to execute command`” with the following stack trace:

    at org.apache.tools.ant.taskdefs.Execute$Java13CommandLauncher.exec
    (Execute.java:655) at org.apache.tools.ant.taskdefs.Execute.launch
    (Execute.java:416) at org.apache.tools.ant.taskdefs.Execute.execute
    (Execute.java:427) at org.apache.tools.ant.taskdefs.compilers.
    DefaultCompilerAdapter.executeExternalCompile(DefaultCompilerAdapter.
    java:448) at org.apache.tools.ant.taskdefs.compilers.JavacExternal.
    execute(JavacExternal.java:81) at org.apache.tools.ant.taskdefs.Javac.
    compile(Javac.java:842) at org.apache.tools.ant.taskdefs.Javac.execute
    (Javac.java:682) at org.apache.jasper.compiler.Compiler.generateClass
    (Compiler.java:396)

#### Solution

Set the JSP compilation switch `fork` to `false`.

This can be done either of two ways:

- Globally, by setting the `fork init` parameter of the `JspServlet` in `${S1AS_HOME}/domains/domain1/config/default-web.xml` to `false`:

      <servlet\> <servlet-name\>jsp</servlet-name\> <servlet-class\>org.apache.
      jasper.servlet.JspServlet</servlet-class\> .... <init-param\> <param-name\>
      fork</param-name\> <param-value\>false</param-value\> </init-param\> ....
      </servlet\>

- On a per-web application basis, by setting the `fork` JSP configuration property in `sun-web.xml` to `false`:

      <sun-web-app\> <jsp-config\> <property name="fork" value="false" /\>
      </jsp-config\> </sun-web-app\>

  Either setting will prevent `ant` from spawning a new process for `javac` compilation.

### Performance degradation on multi-CPU machines. (ID 6194026)

The default configuration of the Application Server PE does not perform optimally on multi-CPU machines. A trade-off is made so that startup is faster, but this can negatively impact the performance of web applications.

#### Solution

Configure the Application Server to use the following JVM option:

    -Dcom.sun.enterprise.server.ss.ASQuickStartup=false

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