We have an interesting problem, and the reporter has been kind enough to provide logs for which we can't explain.
I'd be interested to hear any plausible explanations for a prepared plan suddenly going from 2ms to 60ms for the same input values ? Dave Cramer da...@postgresintl.com www.postgresintl.com ---------- Forwarded message ---------- From: Thomas Kellerer <spam_ea...@gmx.net> Date: 12 January 2016 at 04:03 Subject: [JDBC] Re: 9.4-1207 behaves differently with server side prepared statements compared to 9.2-1102 To: pgsql-j...@postgresql.org > Is it possible to get server logs ? I have picked out one of the statements that suffered from this and sanitized the logfile. http://sql-workbench.net/pg_jdbc_94.log The complete statement is at the top of the file and in the messages themselves, I have replaced each occurrence of the statement with "select ...." The interesting thing (at least for me) is that the first few executions of the server side statement have pretty much the same runtime as the ones before the prepare. And then suddenly the runtime shoots through the rough going up from 1ms to 40ms or even 60ms Regards Thomas -- Sent via pgsql-jdbc mailing list (pgsql-j...@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-jdbc