On 12/02/2014 06:17 PM, Olivier MATROT wrote: > I was wondering if there was a log level in PostgreSQL that could tell > me which query was the trigger of a doomed transaction.
It's not necessarily possible to tell which *query* in another transaction caused the current one to fail. It might not be a single query in the local session or the other session. What can be identified is the other transaction ID. If you set log_line_prefix to include the txid and pid, and you log_statement = 'all', you can examine the logs to see what happened. I admit it's pretty clumsy. It'd be very nice to provide more information on the causes of failures - but I suspect doing so *efficiently*, without making serializable a huge impact on performance, would be quite challenging. -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers