What's really ORACLE_BASE for?

Version: 10.2, 11.1, 11.2
Platform: AIX, Solaris, Linux

What is the importance of the ORACLE_BASE environment variable?
Today I was installing Oracle Client apps team. One of the apps guys asked me why we establish ORACLE_BASE for post-installation/uninstallation? All I know is that it is a base directory in which ORACLE_HOME is located.

I told him that ORACLE_BASE is as folder "Program files" Windows. Inside the "Program Files" folder, you will have installation directories. What is a bad analogy? ;)


Although I put it for hundreds of times facilities, did not quite understand the meaning of it? Any ideas on that?

Oracle_base is just 'root' of all Oracle files.
There are files outside of the $ORACLE_HOME hierarchy, in a properly implemented system in place (i.e.: not all hard-coded), you will need an another common environment variable

$ORACLE_BASE/admin / $ORACLE_SID etc.

It is also in the OFA.

---------------
Sybrand Bakker
Senior Oracle DBA

Tags: Database

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