On Sunday March 26 2006 9:16 am, Tom Lane wrote: > "Ed L." <pgsql@xxxxxxxxxxxxx> writes: > > I see what appear to be many single transactions holding > > RowExclusiveLocks for sometimes 40-50 seconds while their > > query shows "<IDLE> in transaction". > > ... > > I'm thinking that means the client is simply tweaking a row > > and then failing to commit the change for 40-50 seconds. Is > > that consistent? > > That's what it sounds like to me. You might consider logging > all commands from these clients for awhile so you can check > that theory. This indeed appears to be locking problem from within Apache::Session where it deletes a row from the DB but fails to commit the change for an extended period while another transaction waits on the same row. Not sure how/why that's happening in the client code, but it's not a DB issue. Thanks, Ed