> As jared says keep querying the session_Wait u will defnetly bound to 
catch
> the guy who might be causing the database to kneel down.

If the database is hung, the waits will likely show up immediately.  I've 
had 
similar problems with waits on a latch that hung the database.  If a 
session
is hung, the waits should be there the first time you query.

It may also be that you can't even query the v$ views, in which case you
must resort to the state dumps.

Jared





Arun Chakrapani <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
04/30/2002 01:18 PM
Please respond to ORACLE-L

 
        To:     Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
        cc: 
        Subject:        RE: Prod problem, please help!!!


If nothing works and when u know the database has frozen u can run the
following command
to take dump of the database so that u can send it to oracle for analyzing
or u can analyze it too.
As jared says keep querying the session_Wait u will defnetly bound to 
catch
the guy who might be causing the database to kneel down.
Are u flushing shared pool quite frequently. check this out(this was one 
of
the cause which was bringing the database down and was fixed in 7.2 or 7.3 
i
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