Contents

Title and Copyright Information

List of Tables

Send Us Your Comments

Preface

Audience

Organization

Related Documentation

Conventions

Documentation Accessibility

1 Introduction

Overview

Heterogeneous Services Technology

Oracle Transparent Gateways

2 Configuring the Gateway

Configuring the Gateway

Task 1: Choose a System Identifier for the Gateway

Task 2: Customize the Initialization Parameter File

Configuring Oracle Net Services Listener for the Gateway

Task 1: Configure Oracle Net Services TNS Listener for the Gateway

Example of Address to Listen On in listener.ora File

Example of Gateway to Start in listener.ora File

Task 2: Stop and Start the TNS Listener for the Gateway

Configuring the Oracle Database Server for Gateway Access

Configuring Oracle Net Services for the Oracle Database Server

Configuring tnsnames.ora

Creating Database Links

Configuring the Gateway for Multiple Ingres II Databases

Multiple Databases Example: Configuring the Gateway

Multiple Databases Example: Configuring the Ingres II Environment

Multiple Databases Example: Configuring Oracle Net Services Listener

Multiple Databases Example: Stopping and Starting the TNS Listener

Multiple Databases Example: Configuring the Oracle Database Server for Gateway

Configuring Oracle Net Services on the Oracle Database Server for Multiple Gateway Instances

Multiple Databases Example: Accessing Ingres II Data

Performing Configuration Tasks

Configuring for Two-Phase Commit

Task 1: Create a Recovery Account and Password

Task 2: Create the Transaction Log Table

3 Ingres II Gateway Features and Restrictions

Using the Pass-Through Feature

Database Compatibility Issues for Ingres II

Naming Rules

Rules for Naming Objects

Object Names

Case Sensitivity

Data Types

Ingres II Date Limit

Default Date Values

Data Type Conversion

Queries

Empty Strings

Empty Bind Variables

Locking

Known Restrictions

Transactional Integrity

Transaction Capability

COMMIT or ROLLBACK in PL/SQL Cursor Loops Closes Open Cursors

Pass-Through Feature

LONG BYTE and LONG VARCHAR Data Types

SQL Syntax

WHERE CURRENT OF Clause

CONNECT BY Clause

FOR UPDATE OF Clause

Subqueries in UPDATE Statement

ROWID

SQL*Plus COPY Command with Lowercase Table Names

Database Links

Stored Procedures

Known Problems

Encrypted Format Login

Aggregate Function with CREATE TABLE or CREATE VIEW Statement

Date Arithmetic

Ingres II MONEY Data Type

String Functions

POSITION Function

Schema Names and PL/SQL

4 Case Studies

Case Descriptions

CD-ROM Contents

Demonstration Files

Demonstration Requirements

Creating Demonstration Tables

Demonstration Table Definitions

Demonstration Table Contents

Case 1: Simple Queries

Case 2: A More Complex Query

Case 3: Joining Ingres II Tables

Case 4: Write Capabilities

DELETE Statement

UPDATE Statement

INSERT Statement

Case 5: Data Dictionary Query

Case 6: The Pass-Through Feature

UPDATE Statement

SELECT Statement

A Data Type Conversion

Data Type Conversion

B Supported SQL Syntax and Functions

Supported SQL Statements

DELETE

INSERT

SELECT

UPDATE

Oracle Functions

Functions Not Supported by Ingres II

Functions Supported by Ingres II

Arithmetic Operators

Comparison Operators

Group Functions

String Functions

Pattern Matches

Other Functions

C Data Dictionary

Data Dictionary Support

Ingres II System Tables

Accessing the Gateway Data Dictionary

Direct Queries to Ingres II Tables

Supported Views and Tables

Data Dictionary Mapping

Default Column Values

Gateway Data Dictionary Descriptions

D Heterogeneous Services Initialization Parameters

Initialization Parameter File Syntax

HS_FDS_CONNECT_INFO

HS_FDS_INGRES_MODE

HS_FDS_RECOVERY_ACCOUNT

HS_FDS_RECOVERY_PWD

HS_FDS_TIMEZONE

HS_FDS_TRACE_LEVEL

HS_FDS_TRANSACTION_MODEL

Index