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  • Writer's picturekyle Hailey

Finding ORACLE_HOME

Once in while I work on systems that are new to me and no one is around to explain the configuration to me. In these cases, I’ve often wanted a way to clearly figure out which running database is using which ORACLE_HOME, so it was fun to see Tanel Poder’s recent posted on how to do this on LINUX and SOLARIS. Here is a quick summary of LINUX and SOLARIS plus HPUX and AIX as well:

Solaris and Linux

       $ pgrep  -lf _pmon_
       12586 ora_pmon_ee10204

ORACLE_SID is ee10204

       $ pwdx 12586
       12586: /u01/oracle/10.2.0.4/ee1/dbs

ORACLE_HOME is /u01/oracle/10.2.0.4/ee1

HPUX

       $ ps -ef | grep pmon
       ora1024 25611     1  0  Mar 21  ?         0:24 ora_pmon_itanic10

ORACLE_SID is itanic10

       $ pfiles 25611 | grep  bin
       25611:                  /opt/ora1024/app/db_1/bin/oracle

ORACLE_HOME is /opt/ora1024/app/db_1

AIX

        $ ps -ef | grep pmon
      ora1024   262314        1   0   Mar 23      -  0:12 ora_pmon_mercury

ORACLE_SID is mercury

      $ ls -l /proc/262314/cwd
      lr-x------   2 ora1024  dba  0 Mar 23 19:31 cwd -> /data/opt/app/product/10.2.0.4/db_1/dbs/

ORACLE_HOME is /data/opt/app/product/10.2.0.4/db_1
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