Hi Bill, I have found JMX/jconsolve invaluable when investigating memory problems http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html.
Cheers, Robin. Robin Taylor Main Library University of Edinburgh Tel. 0131 6513808 > -----Original Message----- > From: Anderson, Charles W [mailto:bill.ander...@library.gatech.edu] > Sent: 06 May 2010 16:41 > To: dspace-tech > Subject: [Dspace-tech] solr crashing dspace 1.6 > > We're on our second attempt to upgrade from 1.5.2 to 1.6. We > have been plagued with m memory errors both times, and we' > think we've narrowed it down to something that's going on in > the solr webapp. We've got solr running in it's very own > Tomcat instance; which has helped, but hasn't completely > eliminated the problems. > > Just before we crash, we're seeing lots and lots of the > following in the dspace log: > > org.apache.solr.common.SolrException: Internal Server Error > > Then, eventually, we start getting this: > > org.apache.commons.dbcp.SQLNestedException: Cannot get a > connection, pool error: Timeout waiting for idle object > > Meanwhile, over in catalina.out, we have these, which seem to > correspond to the solr errors in the dspace log: > > SEVERE: org.apache.solr.common.SolrException: Error > opening new searcher. exceeded limit of > maxWarmingSearchers=2, try again later. > > And, eventually, the voice of doom: > > Exception in thread "TP-Processor550" > java.lang.OutOfMemoryError: PermGen space > > Has anybody else experience memory issues related to solr? > > Thanks, > > Bill > > > > Bill Anderson > Software Developer > Digital Library Development > Georgia Tech Library > > -------------------------------------------------------------- > ---------------- > _______________________________________________ > DSpace-tech mailing list > DSpace-tech@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dspace-tech > -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. ------------------------------------------------------------------------------ _______________________________________________ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
