I do the same.  One OH for each version.  Listener uses the latest OH.  Databases set env script for OH required.  Simple and it works.
I couldn't imagine having 14 OH's for 14 8i databases on one server :).  Now if I were running on Windows then I would have one db per server hence one OH.  Its all relative, do what you like!
Gene

>>> [EMAIL PROTECTED] 07/18/03 09:19AM >>>
Ray,

    Boy are you ever.  In our location every version gets an Oracle_Home.  Databases that share the same version share the same home.  BTW: Oracle Support recommends using the listener for the highest version installed.  I do that & it works very darn well, unless your into extproc's.  Then you should have an extproc listener for each version installed.

Dick Goulet
Senior Oracle DBA
Oracle Certified 8i DBA

-----Original Message-----
Sent: Thursday, July 17, 2003 7:29 PM
To: Multiple recipients of list ORACLE-L



my 2cents...

Every instance get it's own oracle home, user id and group id.  Total isolation and separation.  It
makes our auditors happy too!

Then again, I may be an extremist...

Ron Thomas
Hypercom, Inc
[EMAIL PROTECTED]
Each new user of a new system uncovers a new class of bugs. -- Kernighan


                                                                                                                                                 
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Well, since nobody else has jumped on this...

-----Original Message-----
> Here's my situation:
> 1.  Should I use a separate Oracle Home for each DB?

Not unless you have some peculiar situation there.  Use separate ORACLE_HOME
for each version of Oracle but not each database.

> Pros:   --Allows upgrade/patching of 1 DB at a
> time without affecting others (some are home-grown,
> some are 3rd party).

The separate ORACLE_HOME for each version takes care of this.  You just
change the ORACLE_HOME in the oratab when you upgrade the database.  If you
use environment setting scripts, have them grab the correct ORACLE_HOME from
the oratab.

something like:

export ORACLE_HOME=`/usr/bin/nawk -F: '$1 == SID {print $2}'
SID="$ORACLE_SID" "$ORATAB"`

where ORATAB is the path to your oratab file.


Sorry, I got no opinions on your storage arrangement.
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