Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> Re: A really strange one..

Re: A really strange one..

From: Michael Haddon <m.haddon_at_tx.rr.com>
Date: Wed, 26 Sep 2007 16:52:14 -0600
Message-ID: <46FAE29E.4070100@tx.rr.com>


I have seen this on AIX, Solaris, Linux and others. Mostly when one of the DBAs has performed a shutdown abort or the system is shut down without the database being shut down first. In earlier versions of oracle (6&7) you would still see the sgadef file in OH/dbs. The startup sees this file (I believe a pointer into the shared memory segment) and believes the database is already started.

If the shared memory segment and semaphores are still there executing sqlplus will attach to the segment but you can't do anything because the background processes aren't running.

IMHO - if the processes get killed the segment and semaphores don't get released and the lock file is not removed.

Mike

--
http://www.freelists.org/webpage/oracle-l
Received on Wed Sep 26 2007 - 17:52:14 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US