Memory leak in XA Implementation
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Key: DBCP-294
URL: https://issues.apache.org/jira/browse/DBCP-294
Project: Commons Dbcp
Issue Type: Bug
Affects Versions: 1.3, 1.4, 2.0
Environment: JDK5, Oracle 10G
Reporter: Philippe Mouawad
Priority: Critical
Hello,
We are been using Ofbiz with DBCP based implementation.
Ofbiz uses a Head revision of DBCP (package org.apache.commons.dbcp.managed is
the same as current TRUNK) and geronimo-transaction-1.0.
We are having recurrent OutOfMemory which occur on a 2 days basis.
I analyzed the Heap Dump and I think have found the source of the problem:
The Heap Dump shows a Retained Heap of 400Mo by
org.apache.commons.dbcp.managed.TransactionRegistry#xaResources field.
After analyzing more deeply, the leak seems to come from what is stored in
xaResources through
xaResources.put(connection, xaResource);
Values inside weak Hash map will never be removed since XAResource holds a
STRONG reference on key (connection) through:
org.apache.commons.dbcp.managed.LocalXAConnectionFactory$LocalXAResource
through:
public LocalXAResource(Connection localTransaction) {
this.connection = localTransaction;
}
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