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http://issues.apache.org/bugzilla/show_bug.cgi?id=35825 Summary: NullPoinTerException retrieving connection from the pool Product: Commons Version: unspecified Platform: Other OS/Version: Windows XP Status: NEW Severity: normal Priority: P2 Component: Dbcp AssignedTo: commons-dev@jakarta.apache.org ReportedBy: [EMAIL PROTECTED] under some load we start getting this exception when retrieving connection from pool: org.apache.commons.dbcp.SQLNestedException: Could not retrieve connection info from pool at org.apache.commons.dbcp.datasources.SharedPoolDataSource.getPooledConnectionAndInfo(SharedPoolDataSource.java:169) at org.apache.commons.dbcp.datasources.InstanceKeyDataSource.getConnection(InstanceKeyDataSource.java:631) at org.apache.commons.dbcp.datasources.InstanceKeyDataSource.getConnection(InstanceKeyDataSource.java:615) at org.apache.torque.TorqueInstance.getConnection(TorqueInstance.java:705) ... 34 more Caused by: java.lang.NullPointerException at org.apache.commons.collections.SequencedHashMap.insertEntry(SequencedHashMap.java:226) at org.apache.commons.collections.SequencedHashMap.put(SequencedHashMap.java:451) at org.apache.commons.collections.LRUMap.put(LRUMap.java:125) at org.apache.commons.dbcp.datasources.SharedPoolDataSource.getUserPassKey(SharedPoolDataSource.java:179) at org.apache.commons.dbcp.datasources.SharedPoolDataSource.getPooledConnectionAndInfo(SharedPoolDataSource.java:165) ... 37 more this is apparently caused by improper syncronization: SharedPoolDataSource.getPooledConnectionAndInfo() is synchronized _instance_ method, but it accesses SharedPoolDataSource.userKeys which is a _static_ variable, so if you have more than one instance of SharedPoolDataSource (as we do) access to the map would not be properly synchronized. So either map should be made instance variable, or the method should be synchronized on the class, not instance. -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
