Upgrade 10gR1 RAC to 10gR2 RAC

After reading the install / upgrade documentation I'm unclear about what will happen with my existing CRS and Database homes. When performing the upgrade from 10gR1 to 10gR2 what will happen to my existing Oracle homes.
1. When upgrading my CRS/ Cluster Ware home will the upgrade require me to define a new CRS home, or will it upgrade my existing CRS / Cluster Ware home.
2. Will I be upgrading my existing database home, or will I need to define a new database home?
I have no need to keep my existing homes to run two different versions of the database, and would prefer not to create new homes for either CRS or the database.
Rob

Hello,
If you want to upgrade you MUST use the same CRS_HOME, you can not have install CRS in a different CRS_HOME.
Also make sure you always upgrade/migrate your CRS stack first, after that ASM if using and then the RDBMS.
The upgrade process of CRS is not that hard. For patchset apply it is very nice, a seperated preinstall directory is cerated and after the install and when you start to execute the root.sh script it will start to apply the patchset.
Then it is even possible to have one node a on a lower CRS level then the other. After upgrade the second not the CRS stack notice the same release and switch to the latest release.
Hope this helps explain is a few lines how to upgrade.
Good luck.
B. de CockBuning
www.rachelp.nl
Good Luck,
B. de CockBuning
www.rachelp.nl

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