Preface

Describes diagnosing and solving common replication problems.

Appendix B, "Col umn Length Semantics and Unicode"

Contains information about replicatio n support for column length semantics and Unicode.

Related Documentation

For more information, see these Oracle resources:

• Oracle Database Advanced Replication Management API Reference
• The Replication Management tool online help
• Oracle Database Concepts
• Oracle Database Administrator's Guid e
• Oracle Database SQL Reference
• < a class="olinkSRC LNPLS" href="../../appdev$101/b10807/toc.htm">PL/SQL User's Guide and Reference (if you plan to use proced ural replication)
• Oracle Streams Replication Administrator's Guide if you want to migrate your Advance d Replication environment to Oracle Streams
• Oracle Database New Features for information about the types of Advanced Re plication environments that are supported by different editions of Oracle

You may find more information about a particular topic in the other documents in the Oracle documentation set.

Oracle error message documentation is only available in HTML. If you only have access to the Oracle Documentation CD, you can browse the error messages by range. Once you find the specific range, use your browser's "find in page" feature to locate the specifi c message. When connected to the Internet, you can search for a specific error message using the error message search feature of the Oracle online documentation.

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 Oracle Database Sample Schemas for information on how these schemas were created and how you can use them yourself.

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Conventions

This section describes the conventions used in the text and code examples of this documentation set. It describes:

• Conventions in Text
• Conv entions in Code Examples

Conventions i n Text

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.

Conventions in Code Examples

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 d
ba_users WHERE username = 'MIGRATE';

The following table describes typographic conventions used in code examples and provides examples of their use.

Italicized text indicates placeholders or variables for which you must supply particular values.

[ ]

DECIMAL (digits [ , precision
 ])

{ }

{ENABLE | DISABLE}

|

{ENABLE | DI
SABLE}
[COMPRESS | NOCOMPRESS]

...

CREATE TABLE ... AS <
em class="Italic">subquery;

SELECT col1, c
ol2, ... , coln FROM 
employees;

 .
 .
 .

SQL> SELECT NAME FROM V$DATAFILE;
NAME
------------------------------------
/fsl/dbs/tbs_01.dbf
/fs1/dbs/tbs_02.dbf
.
.
.
/fsl/dbs/tbs_
09.dbf
9 rows selected.

acctbal NUMBER(11,2);
acct    CONSTANT NUMBER(4) := 3;

Italics

CONNECT SYSTEM/system_pas
sword
DB_NAME = database_name

UPPERCASE

SELECT last_name, employee_id FROM 
employees;
SELECT * FROM USER_TABLES;
DROP TA
BLE hr.employees;

lowercase

SELECT last_name, employee_id FROM 
employees;
sqlplus hr/hr
CREATE USER mjones IDENTIFIED BY ty3MU9;

Documentation Accessibility

Our goal is to make Oracle products, services, and supporting documentation accessible, with good usability, to the disable d community. 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 continu e 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/accessibili
ty/

Accessibility o f Code Examples in Documentation

JAWS, a Windows screen reader, may not always corre ctly read the code examples in this document. The conventions for writing code require that closing braces should appear on an otherw ise empty line; however, JAWS may not always read a line of text that consists solely of a bracket or brace.

Accessibility of Links to External Web Sites in Documentation

This documentation may contain links to Web sites of other companies or organizations that Ora cle does not own or control. Oracle neither evaluates nor makes any representations regarding the accessibility of these Web sites.