Re: ANALYZE locks pg_listener in EXCLUSIVE for long

At 02:54 PM 3/05/2004, Tom Lane wrote:
>Please dig deeper.

I may have found the problem; all the hung processes show 'async_notify 
waiting' in ps, and the ANALYZE eventually dies with 'tuple concurrently 
updated'.

The routine 'ProcessIncomingNotify' in async.c does indeed try to lock 
pg_listener (even if we're not using NOTIFY/LISTEN). Not sure why the 
ANALYZE is locking the relation, though...but it is locked in AccessShareLock.

I can send a log of my investigations if necessary.



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