RE: Serious Issue in oracle
- From: "Dunbar, Norman" <norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx>
- To: "ORACLE-L" <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 26 Jan 2010 08:15:46 -0000
Morning Thomas,
>> Yep, query gv$session and filter based on username,
>> schemaname, and sql_id if you know it. Pay close attention
>> to the event and blocking session columns. That will tell
>> you if there is some sort of deadlock occurring.
I'm puzzled. I've never seen a deadlock show up in V$SESSION or
V$SESSION_WAIT before. Any deadlock I've actually seen - I've set up
myself for testing purposes - usually has one statement killed by Oracle
and an ORA-60 reported within a second and well before I get a chance to
check these views.
I know a second is a long time CPU wise, but I'm not all that sure that
a deadlock will show up in either of these views. I'm interested though
in knowing whether it does or doesn't - in case anyone has seen them
show up.
I've got a blog entry on deadlocks at
http://qdosmsq.dunbar-it.co.uk/blog/?p=192 and I'd like to keep it up to
date.
Cheers,
Norman.
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