PATCH Oracle RAC 10gR2 DB on Linux

Question

Hello,
I want to patch 2 node RAC 10gR2 DB (Standard Edition) on SLES 11. I have patched signle instance DB with OPATCH, but never patched RAC DB, kind of very nervous. I am not able to find generally and also from MOS regarding step by step process to patch RAC 10gR2 on SLES OS. In the readme of the Patch, I do not find step by step detail of how to ....regarding RAC. Following is the information regarding the current setup, please have a look and suggest/help me, as it's a production DB and I'm little afraid to Patch it.
I've also other general questions please, like:
- In RAC, how many homes are normall there to patch? DB,CRS, Grid?
- Clusterware (CRS) and ASM has same home?. Are they same?. Pathing any one means pathing both ASM and CRS, right?
oracle@dba01 [ec]: /home/oracle > echo $CRS_HOME
/oracle/app/11.2.0/grid
oracle@dba01 [ec]: /home/oracle > echo $ASM_HOME
/oracle/app/11.2.0/grid
oracle@dba01 [ec]: /oracle/app/10.2.0/db1/OPatch > opatch lsinventory
Invoking OPatch 11.2.0.1.0
Oracle Database 10g                                                  10.2.0.1.0
Oracle Database 10g Release 2 Patch Set 3                            10.2.0.4.0
There are 2 products installed in this Oracle Home
Rac system comprising of multiple nodes
  Local node = dba01
  Remote node = dba02
Connected to:
Oracle Database 10g Release 10.2.0.4.0 - 64bit Production
With the Real Application Clusters option
####### According to MOS patch advisor for the DB, found this patch for Linux-x86-64:
Patch 12879929 - 10.2.0.4.11 Patch Set Update ## DATABASE PATCH SET UPDATE 10.2.0.4.11 (PRE-REQ 10.2.0.4.4|INCLUDES CPUJAN2012)
Patch 9352164 - 10.2.0.4.4 Patch Set Update
# Both are in Downloads folder on my local machine.
SYS@rac1p1 AS SYSDBA> select * from registry$history;
ACTION_TIME       ACTION  NAMESPACE VERSION   ID  COMMENTS   BUNDLE_SERIES
30-MAR-10 07.38.3 APPLY    SERVER  10.2.0.4   6   CPUJan2010   CPU   6.877725 AM
30-MAR-10 07.43.4 CPU                       6452863 view recompilation 5.716832 AM
14-JUN-10 10.55.1 APPLY    SERVER  10.2.0.4   7   CPUApr2010   CPU   8.089709 PM
oracle@dba01 [ec]: /home/oracle > echo $CRS_HOME
/oracle/app/11.2.0/grid
oracle@dba01 [ec]: /oracle/app/11.2.0/grid/OPatch > opatch lsinventory
Patch  9352191      : applied on Mon Jun 14 22:28:04 CEST 2010 # Latest patch installed ..
- - - # I think patch option for RAC which I read,,,rolling I cannot perform because its not Enterprise edition DB, minimum downtime also doesn't look like suitable, then I think I will adopt ALL NODE patching,isn'it?
# In DB, I can find out through registry$history the latest PSU installed, but how would I find out which patch to install now in CRS/ASM home?
# I was looking at srvctl and crsctl,etc commands....I am little confused between these both type of command to perform ...like to Shutdown instances,services,listener,nodes,etc...what commands do I need for this process, please?
Bundle of thanks.
Regards

Answer 1

Hello,
Thanks for the reply.
What I noticed before that as ASM-GI has same home, so I need to apply one patch for that. After your reply I am planning to do it like that only.
As I have posted in my main post the versions of patches to apply for Oracle Home. That seems somehow clear to me what to apply and,etc. Can you please suggest which Patch or how to find/select next patch version to apply to ASM/GI home please?
When we select PATCH ADVISOR from MOS, for example in case of DB home, I select DB,Enterprise,Standard editio,9i,10g,11,d, OS Linux-x64,10.2.0.4. DB,OS version etc is OK, but I am confused what to select from that first drop down menu in order to select patch version for ASM/GI ??
@onedba
I am planning to Patch not upgrade.
Thanks and regards.