Cluster registry information

Question

On an 11g CRS (non RAC) - only clusterware with 2 nodes , 1 active 1 passive (for failover), how can I check the ORACLE_HOME used to startup the database (say). I know in RAC you can do a srvctl config database which will show the OH information and what DBs are configured but how do we do that in non RAC (only clusterware).
I tried dumping the OCR using ocrdump <dumpfilename>, but this file has CRS_HOME, ASM_HOME etc. not the OH for RDBMS.
Is there a way round?
(the reason I'm doing so is that the clusterware, ASM and DB is up but the oratab is mismatching; I want to make sure what home was used to start this DB).
Thanks

Answer 1

Hi,
how can I check the ORACLE_HOME used to startup the database (say)
(the reason I'm doing so is that the clusterware, ASM and DB is up but the oratab is mismatching; I want to make sure what home was used to start this DB).Linux environment
If Database is up do this:
# Get pid of PMON of your Instance
$ ps -ef |grep pmon_db10g1 |grep -v grep
oracle    7434     1  0 May06 ?        00:06:28 ora_pmon_db10g1
# Using PID see loaded shared libraries:
$ cat /proc/7434/maps
00110000-00186000 r-xp 00000000 fd:00 5962208    /u01/app/oracle/product/10.2.0/db_1/lib/libocr10.so
00186000-00187000 rwxp 00075000 fd:00 5962208    /u01/app/oracle/product/10.2.0/db_1/lib/libocr10.so
...Here is my OH /u01/app/oracle/product/10.2.0/db_1
I could not understand what exactly you did an active/passive without using OCR but I that it.
Regards,
Levi Pereira