RE: A really strange one..
- From: "Mercadante, Thomas F (LABOR)" <Thomas.Mercadante@xxxxxxxxxxxxxxxxx>
- To: <Jon.Crisler@xxxxxxx>, "oracle-l" <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 26 Sep 2007 14:54:06 -0400
On AIX, the file name is lk(sid name)
Example: lkCURD
Tom
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Crisler, Jon
Sent: Wednesday, September 26, 2007 2:43 PM
To: oracle-l
Subject: RE: A really strange one..
I have seen it many times, mostly on Linux, sometimes on AIX, rarely on
Solaris. Looking for shared memory segments that were not released, and
freeing them (or rebooting) is the normal fix. I believe there is a
lock file in $OH/dbs by default that might need to be removed, but the
name of the file escapes me.
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Andrew Kerber
Sent: Wednesday, September 26, 2007 11:36 AM
To: oracle-l
Subject: A really strange one..
Ok, I just ran into a strange one this morning. US central time that
is.
We are moving our clustered databases to new servers, and we put one
database onto the new hardware for initial testing. We restored from a
backup, and got both instances running. Today when I did a
ps -ef | grep pmon
I saw two pmon processes going for the single instance. I have no idea
what could have caused that. So I set my oracle_sid, path, oracle_Home
and shutdown the instance. What do you know, there was still one pmon
process running. I did a kill -9 on that one.
Then I go to start the instance again. And I get this error: ORA 01081
"cannot start already-running ORACLE - shut it down first"
I did a ps -ef | grep oracle, didnt get anything (except my user process
of course).
I finally googled and found one possibility, a locked shared memory
segment.
Sure enough
ipcs -a | grep dba
returned a large segment of memory that was still locked. So I ran this
(found on the same site) and released it:
ipcs -a | grep dba | perl -ane 'system "ipcrm -$F[0] $F[1]"'
My question is, has anyone seen this before, or know what causes it?
--
Andrew W. Kerber
'If at first you dont succeed, dont take up skydiving.'
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