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Managing a 9i RAC Database on 10g Clusterware

Oracle Database Tips by Donald Burleson

The key to managing a 9i database after the 10g CRS has been installed is to use the 9i version of srvctl, sqlplus, rman, etc. to start, stop and maintain the 9i instances.  

Use the racenv script to ensure the correct version of a given application is used to manage a given database, and use the Linux which command to double check that the correct version is accessed for a given database. Switching from a 9i database to a 10g database is just a matter of using racenv to change the environmental variables. It is really that simple!

The 10g version of gsd will provide service to the 9i srvctl just fine. The 9i version of the gsdctl script was intentionally disabled in Chapter 8 because it should not be used to manage the 10g gsd service.

Registering the 9i Service with a 10g Listener

It is extremely easy to register a 9i database with a 10g listener. Simply start it up with the 9i version of srvctl, and use the 10g version of lsnrctl status LISTENER_<node_name> to check the service.

When starting the 9i database, the error message ?PRKP-1040 Failed to get the status of the listeners associated with instance?? should be ignored! The database will start normally and will be served by the 10g listener even though this message may appear.

The tnsnames.ora file in the 9i oracle home will serve the 9i clients that need to connect to 9i instances. Edit the 9i tnsnames.ora file so that the host names read ?vip-oracle1? and ?vip-oracle2?. There is no need to edit the tnsnames.ora file in the 10g oracle home.

Learn More about PC RAC:
 

If you want to learn RAC at home, get the bestselling book "Personal Oracle Real Application Clusters" by Edward Stoever.

You can buy it direct from the publisher for 30%-off and get instant access to the code depot of Oracle tuning scripts.


 

 

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