Call now: 252-767-6166  
Oracle Training Oracle Support Development Oracle Apps

 E-mail Us
 Oracle Articles
New Oracle Articles

 Oracle Training
 Oracle Tips

 Oracle Forum
 Class Catalog

 Remote DBA
 Oracle Tuning
 Emergency 911
 RAC Support
 Apps Support
 Oracle Support

 SQL Tuning

 Oracle UNIX
 Oracle Linux
 Remote s
 Remote plans
 Application Server

 Oracle Forms
 Oracle Portal
 App Upgrades
 SQL Server
 Oracle Concepts
 Software Support

 Remote S


 Consulting Staff
 Consulting Prices
 Help Wanted!


 Oracle Posters
 Oracle Books

 Oracle Scripts

Don Burleson Blog 







Data Guard Symmetrical initialization ora files Tips

 Oracle Database Tips by Donald Burleson

To make this activation process as quick as possible, a symmetrical initialization parameter file will be used for this configuration. This means having the same initialization parameters file for the primary and the standby database.  The initialization file does not have to be changed during switchover or failover operations.

The init.ora file, in this case, will contain a superset of parameters specific to both the standby and the primary database. For example, the standby_archive_dest parameter is not required for the primary database and the log_archive_dest_2 parameter is not required for the Oracle instance during their normal operations, but the symmetrical init.ora file will contain both of these parameters.

What happens to the parameters that are not required? The answer is that the non-essential parameters are ignored. Therefore, the standby_archive_dest parameter will be ignored when the database is behaving as the primary, and the log_archive_dest_2 will be ignored when the database is acting as the standby. There will not be any errors or warnings in the alert log file about the parameters that have been ignored.

The following example shows a symmetrical init.ora file for database meddb:


# Control File Configuration


# Archive


# Miscellaneous


# Network Registration


The init.ora parameters for the appsdb database are similar except for the changes in the directory structure, db_name and instance parameters. In this configuration, an assumption has been made that the DBA is able to create the standby database in same directory structure on remote host. If it must be created it in a different directory structure, include the db_file_name_convert and log_file_name_convert parameters in the init.ora files.



The above text is an excerpt from the book: Oracle Data Guard Handbook

Oracle Training at Sea
oracle dba poster

Follow us on Twitter 
Oracle performance tuning software 
Oracle Linux poster


Burleson is the American Team

Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications.

Errata?  Oracle technology is changing and we strive to update our BC Oracle support information.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback.  Just  e-mail:  

and include the URL for the page.


Burleson Consulting

The Oracle of Database Support

Oracle Performance Tuning

Remote DBA Services


Copyright © 1996 -  2020

All rights reserved by Burleson

Oracle ® is the registered trademark of Oracle Corporation.