SQLQueryImpl Memory Leak causes OutOfMemoryException ---------------------------------------------------- Key: HHH-5215 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5215 Project: Hibernate Core Issue Type: Bug Affects Versions: 3.3.2 Environment: Sun Solaris 10 Sparc Reporter: Pamir Erdem Attachments: nativequeryspec.jpg, Query.jpg, sameQueryOutGoingRef.jpg In one of our batch operations gets OutOfMemoryExcetion. Working on heap dump, it is found out that, same query cached more than once. In the picture below the query is shown. !Query.jpg! After we found out that the root cause of the problem is the QueryPlanCache, the batch was executed under eclipse environment to find what was wrong. Altough the only qery is the query.jpg the query plan cache was so high that it can be seen easly from MAT. !nativequeryspec.jpg! We get the picture below by going outgoing references from MAT. !sameQueryOutGoingRef.jpg! The first step was looking at the source code where hashCode was calculated. !! -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira