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Oracle Data Guard 11gR2 Administration : Beginner's Guide

You're reading from   Oracle Data Guard 11gR2 Administration : Beginner's Guide If you're an Oracle Database Administrator it's almost essential to know how to protect and preserve your data. This is the perfect primer to Data Guard that covers all the bases with a totally practical, user-friendly approach.

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Product type Paperback
Published in Jun 2013
Publisher Packt
ISBN-13 9781849687904
Length 404 pages
Edition 1st Edition
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Toc

Table of Contents (19) Chapters Close

Oracle Data Guard 11gR2 Administration Beginner's Guide
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Pop Quiz Answers
1. Getting Started FREE CHAPTER 2. Configuring the Oracle Data Guard Physical Standby Database 3. Configuring Oracle Data Guard Logical Standby Database 4. Oracle Data Guard Broker 5. Data Guard Protection Modes 6. Data Guard Role Transitions 7. Active Data Guard, Snapshot Standby, and Advanced Techniques 8. Integrating Data Guard with the Complete Oracle Environment 9. Data Guard Configuration Patching 10. Common Data Guard Issues 11. Data Guard Best Practices Index

Time for action – changing the Database Guard setting


As we mentioned before, the default Database Guard mode for a logical standby database is set to ALL. Let's try to insert data into the HR.REGIONS table, which is out of the replication scope because of the skip rule we created.

  1. Connect the logical standby database with SYS user. Check the Database Guard mode and skip rules with the following query:

    SQL> SELECT GUARD_STATUS FROM V$DATABASE;
    
    GUARD_S
    -------
    ALL
    
    SQL> SELECT OWNER, NAME,STATEMENT_OPT, PROC  FROM DBA_LOGSTDBY_SKIP  WHERE STATEMENT_OPT <> 'INTERNAL SCHEMA';
    
    OWNER    NAME         STATEMENT_OPT   PROC
    -------- ------------ --------------- ------------------
                          DIRECTORY
    HR       %            DML
                          TABLESPACE      SYS.CHANGE_TS_DDL 

    Database Guard mode is ALL and all HR tables are skipped by SQL Apply.

  2. Now connect with the HR user and insert a row to the REGIONS table:

    SQL> CONN HR/HR
    Connected.
    SQL> INSERT INTO HR.REGIONS...
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