Oracle9i Heterogeneous Connectivity Administrator's Guide Release 1 (9.0.1) Part Number A88789_01 |
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Oracle9i Heterogeneous Connectivity Administrator's Guide describes implementation issues for Oracle9i Heterogeneous Connectivity and introduces the tools and utilities available to assist you in implementing and using this feature.
This preface contains these topics:
Oracle9i Heterogeneous Connectivity Administrator's Guide is intended for the following users:
To use this document, you should be familiar with the following information:
This document contains the following chapters:
Heterogeneous Services, an integrated module within the Oracle9i database server, has been designed to access data in non-Oracle systems by means of either Oracle Transparent Gateways or generic connectivity. This chapter introduces you to Heterogeneous Services by describing the kinds of situations in which Heterogeneous Services is needed and by explaining how Heterogeneous Services fulfills this need.
You can access a non-Oracle database system either by Transparent Gateways or with Generic Connectivity. This chapter describes the architecture of Heterogeneous Services insofar as it relates to each of these means of accessing a non-Oracle system.
This chapter describes the major features provided by Heterogeneous Services.
This chapter explains how to use Oracle Transparent Gateways.
This chapter explains what multithreaded agents are, how they contribute to the overall efficiency of a distributed database system, and how to administer multithreaded agents.
This chapter explains how to optimize distributed SQL statements, how to use partition views with Oracle Transparent Gateways, and how to optimize the performance of distributed queries.
This chapter describes the configuration and usage of generic connectivity agents.
This appendix lists Heterogeneous Services initialization parameters and gives instructions how to set them.
The tables in this appendix show how Oracle maps ANSI datatypes through ODBC and OLE DB interfaces to supported Oracle datatypes when it is retrieving data from a non-Oracle system.
The package, DBMS_HS_PASSTHROUGH
, contains the procedures and functions for pass-through SQL of Heterogeneous Services. This appendix documents each of them.
This appendix documents data dictionary translation support. It explains how to access non-Oracle data dictionaries, lists Heterogeneous Services data dictionary views, describes how to use supported views and tables, and explains data dictionary mapping.
For more information, see these Oracle resources:
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If you already have a username and password for OTN, then you can go directly to the documentation section of the OTN Web site at
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Many of the examples in this book use the sample schemas of the seed database, which is installed by default when you install Oracle. Refer to Oracle9i Sample Schemas for information on how these schemas were created and how you can use them yourself.
In North America, printed documentation is available for sale in the Oracle Store at
http://oraclestore.oracle.com/
Customers in Europe, the Middle East, and Africa (EMEA) can purchase documentation from
http://www.oraclebookshop.com/
Other customers can contact their Oracle representative to purchase printed documentation.
To download free release notes, installation documentation, white papers, or other collateral, please visit the Oracle Technology Network (OTN). You must register online before using OTN; registration is free and can be done at
http://technet.oracle.com/membership/index.htm
If you already have a username and password for OTN, then you can go directly to the documentation section of the OTN Web site at
http://technet.oracle.com/docs/index.htm
This section describes the conventions used in the text and code examples of this documentation set. It describes:
We use various conventions in text to help you more quickly identify special terms. The following table describes those conventions and provides examples of their use.
Code examples illustrate SQL, PL/SQL, SQL*Plus, or other command-line statements. They are displayed in a monospace (fixed-width) font and separated from normal text as shown in this example:
SELECT username FROM dba_users WHERE username = 'MIGRATE';
The following table describes typographic conventions used in code examples and provides examples of their use.
Oracle's goal is to make our products, services, and supporting documentation accessible to the disabled community with good usability. To that end, our documentation includes features that make information available to users of assistive technology. This documentation is available in HTML format, and contains markup to facilitate access by the disabled community. Standards will continue to evolve over time, and Oracle is actively engaged with other market-leading technology vendors to address technical obstacles so that our documentation can be accessible to all of our customers. For additional information, visit the Oracle Accessibility Program Web site at
http://www.oracle.com/accessibility/
JAWS, a Windows screen reader, may not always correctly read the code examples in this document. The conventions for writing code require that closing braces should appear on an otherwise empty line; however, JAWS may not always read a line of text that consists solely of a bracket or brace.
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