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 








  Oracle Database Tips by Donald Burleson

Oracle10g Grid Computing with RAC
Chapter 15 - RAC Migration Topics

Manual Conversion Procedure

  1. Configure the net service entries for the database and instances and address entries for the LOCAL_LISTENER for each instance and REMOTE_LISTENER in the tnsnames.ora file and then copy it to all nodes.

  2. Create an SPFILE from the PFILE using the command:

CREATE SPFILE='Spfile_name' from pfile='pfile_name'

(the file names should be full path names)

  1. If you are not using a cluster file system, then ensure that the SPFILE is on a raw device.

  2. Now create a $ORACLE_HOME/dbs/initSID.ora file on UNIX-based systems or a %ORACLE_HOME%\database\initSID.ora file on Windows-based systems that contains the following entry:


  1. where spfile_path_name is the complete path name of the SPFILE.

  2. Add the configuration for the RAC database and its instance-to-node mapping using SRVCTL (see Chapter 8 for the format).

  3. Start the RAC database using SRVCTL (see Chapter 8 for the format).

Once the database has been started with SRVCTL, your conversion process is complete and the following SQL statement can be used to see the status of all the instances in your converted RAC database:

select * from v$active_instances

Conversion of a Single Instance on a Cluster Running from a RAC-Disabled Oracle Home

On UNIX/Linux-based systems, where re-link of the Oracle executables is possible, having a single-instance running from a RAC-disabled Oracle home installation is possible (if improbable) if a one-node cluster (with RAC) installation was performed, but later the RAC feature was disabled by unlinking it from the oracle binary before creating the single instance database. An alternative method is to select the "local", "non-cluster" selection on the Node Selection screen in OUI to create a non-RAC-enabled single-instance home on a cluster. Use the following technique to convert this special type of single-instance database into a RAC database:

  1. On the cluster node where the single-instance database is running, create a duplicate template of the database as described in precious sections using DBCA.

  2. Change the working directory to the lib subdirectory in the rdbms directory under the Oracle home.

Get the complete Oracle10g story:

The above text is an excerpt from "Oracle 10g Grid & Real Application Clusters", by Rampant TechPress.  Written by top Oracle experts, Mike Ault and Madhu Tumma, this book has a complete online code depot with ready to use scripts. 

To get the code instantly, click here:

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.