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From: jkstill@gmail.com
Newsgroups: comp.databases.oracle.server
Subject: Re: TIMEOUT ON CONTROL FILE ENQUEUE
Date: 9 Sep 2005 09:52:03 -0700
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1.  yes, no rows returned shows that no tablespaces were in backup
mode.
2.  starting the database should be fine.
3.  you should probably make a good backup, for your own peace of mind.
A hot backup will be fine.

There appears to be a lot of information on that particular ORA-600.

The suggestions given seem like a good place to start.

You may want to take a look at IO contention, but the fact that your
control file was unavailable for 15 minutes and caused the instance to
crash suggests you may want to discuss this with the system
administrator as well.

Faulty HW could cause this.  As you are on 7.3.4 there is reason to
suspect that this may be old HW as well.  Is that the case?