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Component Releases
Each component has a release or version
Mixing releases can be problematic
For example, assume
- Group of 8.1.x production databases – targets
- Install new 9i database to hold recovery catalog
- Want to use 9i RMAN to backup 8.1.x DB’s
- No Good!
See RMAN compatibility matrix
- “The versions of the RMAN executable and the target database should be the same”
- http://metalink.oracle.com
Notes:
Each component in the RMAN environment has a release – and often they are not the same. For example, you may have a group of release 8.1.x production (target) databases that you would like to back up with RMAN. You would like to create a new database to hold you recovery catalog and choose to install Oracle9i. Finally, to take advantage of the new 9i RMAN features, you would like to use 9i RMAN to backup your 8.1.x databases. However, this is not valid! You will need to backup your 8.1.x databases with a 8.1.x version of RMAN. Oracle documentation states “The versions of the RMAN executable and the target database should be the same.” So, in fact, you will need multiple copies of RMAN to backup your mixed release environment.
See the RMAN compatibility guide for more information. Login to Metalink and search on “RMAN compatibility” for the latest compatibility guide.
Note: I experienced bugs in Linux 8.1.6 RMAN, which prevented its use. Oracle provided a patch, but as of May 2002, it has not been tested.