[Zope] ZPsycopg - Losing Connections
Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) Hi I am experiencing a new problem, that was not present in the past on the above server. From the Zope error log: Exception Type OperationalError Exception ValuePQsendQuery() -- There is no connection to the backend. Traceback (innermost last): Module ZPublisher.Publish, line 92, in publish Module ZPublisher.BaseRequest, line 433, in traverse Module Products.exUserFolder.exUserFolder, line 869, in validate Module Products.exUserFolder.exUserFolder, line 1133, in listOneUser Module Products.exUserFolder.pgAuthSource.pgAuthSource, line 244, in listOneUser Module Shared.DC.ZRDB.DA, line 454, in __call__ SQL instance at 922dd70 Module Products.ZPsycopgDA.db, line 228, in query OperationalError: PQsendQuery() -- There is no connection to the backend. When I check in psql, I can see a connection still being there. Using the query: SELECT count(pg_stat_activity.datname) AS count, pg_stat_activity.datname FROM pg_stat_activity GROUP BY pg_stat_activity.datname; (Is this really showing active connections? Or just recent usage?) If I use the close connection and then open connection buttons in the Z Psycopg Database Connection in Zope, I get the connection usually back. Sometimes I have to re-submit the properties to make it work, though. Properties settings are: Connect immediately is checked Use Zope's internal DateTime module (instead of mxDateTime) is checked Transaction isolation level: Serializable Backend encoding: UTF-8 Output Unicode strings is not checked This is fast becoming a real headache for us! What has changed? We have recently increased the max_connections and shared_buffers for PostgreSQL and now run more Zope instances with now averaging about 40 connections from the database (using the query above). So this is an increase. Any help on how I can find out what's going on here is very welcome! (or in short: HELP, PLEASE!) Cheers ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZPsycopg - Losing Connections
On 7/27/05, Fernando Lujan [EMAIL PROTECTED] wrote: On 7/27/05, David [EMAIL PROTECTED] wrote: Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) The Psycopg version 1.1.19 solves this problem. :) The 1.1.19 version isn't in debian yet. $ apt-get show python-psycopg shows only 1.1.18 :( -- Fernando Lujan ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZPsycopg - Losing Connections
On 7/27/05, Peter Bengtsson [EMAIL PROTECTED] wrote: On 7/27/05, Fernando Lujan [EMAIL PROTECTED] wrote: On 7/27/05, David [EMAIL PROTECTED] wrote: Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) The Psycopg version 1.1.19 solves this problem. :) The 1.1.19 version isn't in debian yet. $ apt-get show python-psycopg shows only 1.1.18 :( So, use the source... ;) -- Fernando Lujan ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZPsycopg - Losing Connections
On Wednesday den 27. July 2005 14:45, Peter Bengtsson wrote: On 7/27/05, Fernando Lujan [EMAIL PROTECTED] wrote: On 7/27/05, David [EMAIL PROTECTED] wrote: Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) The Psycopg version 1.1.19 solves this problem. :) The 1.1.19 version isn't in debian yet. $ apt-get show python-psycopg shows only 1.1.18 :( #wget http://ftp.de.debian.org/debian/pool/main/p/psycopg/python-psycopg_1.1.19-1_i386.deb #dpkg -i python-psycopg_1.1.19-1_i386.deb -- Med venlig hilsen Thomas Olsen http://www.headnet.dk ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZPsycopg - Losing Connections
Fernando: I have downloaded the source from http://initd.org/pub/software/psycopg/PSYCOPG-1-1/ and compiled it (in RH FC4 and RHEL3, tough) with no problams whatsoever. I am using Zope 2.7.5, Python 2.3.5, Psycopg sources 1.1.19 and PostgreSQL 8.0.3 The only advice would be to upgrade your postgresql to 8.0.3 since the version you are using is a bit outdated. Best regards. Felipe Barousse Boué Piensa Technologies - Bufete Consultor de Mexico www.piensa.com On Wed, 2005-07-27 at 12:00 -0400, [EMAIL PROTECTED] wrote: Message: 15 Date: Wed, 27 Jul 2005 13:45:52 +0100 From: Peter Bengtsson [EMAIL PROTECTED] Subject: Re: [Zope] ZPsycopg - Losing Connections To: Fernando Lujan [EMAIL PROTECTED] Cc: zope@zope.org Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=ISO-8859-1 On 7/27/05, Fernando Lujan [EMAIL PROTECTED] wrote: On 7/27/05, David [EMAIL PROTECTED] wrote: Python 2.3.5 - Zope 2.7.5 - PostgreSQL 7.3.4 - Psycopg 1.1.18 - Solaris 8 (Intel) The Psycopg version 1.1.19 solves this problem. :) The 1.1.19 version isn't in debian yet. $ apt-get show python-psycopg shows only 1.1.18 :( ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
