Craig Ringer <ringerc@xxxxxxxxxxxxx> writes: > On 08/10/2012 10:06 AM, Tom Lane wrote: >> That sure sounds like the source of your problem. It might be sane if >> it killed only processes that *had been idle* for at least three >> seconds, but I'm not sure there is any easy way to determine that ... > wouldn't: > select * from pg_stat_activity > where current_query = '<IDLE> in transaction' > AND query_start < current_timestamp - INTERVAL '3 seconds'; > do it? No, that would find sessions that were idle and whose last command started at least 3 seconds ago. But it might have completed only microseconds ago. The symptoms Greg is describing are consistent with this kill script running during a short interval between his index-build command and his COMMIT. As of 9.2 there's a "state_change" timestamp column in pg_stat_activity that would provide a safer check, but it's not in existing releases ... regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin