DriverManagerXAConnection is not getting closed.Toplink 9.0.4.5 OC4J 10.1.2

DriverManagerXAConnection is not getting closed.
Toplink is acquiring connections from two pools OracleConnectionPooledDataSource
and XAConnectionpool. The connection of PooledDatasource is getting released
but the DriverManagerXAConnection is not getting released.
The oc4j output shows.
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@d042d7 to pool (Pool size: 1)
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@702936 to pool (Pool size: 2)
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@1c0db6a to pool (Pool size: 3)
I saw a thread in oc4j forum
Get and close connections many times in an EJB transaction drains pool
which says that this issue is resolved, but I am using toplink 9045 and oc4j 1012
and the problem still persist, also I cannot find the bug 3330123 which is
mentioned in that link on metalink.
Does toplink uses two different connection pools for reading and writing respectively
when used with External Transaction Controller ?
If yes then how this two different pools be configured.
Any help is appreciated.

Hello,
In the forum posting you mentioned, bug: 3330123 I think was a red herring as it was an internal bug that was never able to be verified.
The post though mentions that a Tar:3793784.996 was opened. This tar was linked to bug:3674906 which was created to deal with the issue that calling ds.getConnection() max-connections*10 times, OC4J throws SQLException (timeout).
The problem was that each getConnection call was returning a new logical connection, even though they would share the same physical connection if in the same transaction context. This was changed so that there is no limit on the number of logical connections.
The release logging messages you are seeing are a left over that doesn't seem to have been looked at as a probelm in the bug. I believe they can be ignored - the logical connections are held on to by the container transaction and will only released when this transaction is commited/rolledback.
As for pooling configuration, I suggest looking at the sessionbean demos that use OC4J as examples of how it should be configured. TopLink will use separate pools for reading/writing if configured.
Best Regards,
Chris Delahunt

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DriverManagerXAConnection is not getting closed.Toplink 9.0.4.5 OC4J 10.1.2

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