On Dec 2, 2015, at 9:50 AM, Bill Moran <wmoran@xxxxxxxxxxxxxxxxx> wrote: > Then wait for a little while and the message will be logged. Well, yes and no :) : 2015-12-02 10:07:40.281 PST,"xof","xof",8465,"[local]",565f3365.2111,4,"UPDATE waiting",2015-12-02 10:07:33 PST,3/12,1000056,LOG,00000,"process 8465 still waiting for ShareLock on transaction 1000055 after 1001.203 ms","Process holding the lock: 8428. Wait queue: 8465.",,,,"while updating tuple (0,1) in relation ""x""","update x set a='a';",,,"psql" Note that it's waiting for a ShareLock, not an AccessExclusiveLock, thus my question. Just to clarify, my very specific question is about "AccessExclusiveLock". -- -- Christophe Pettus xof@xxxxxxxxxxxx -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general