error delisting resource error with Oracle 9

I get this warning:

85297 [http-8080-Processor23] WARN bitronix.tm.internal.XAResourceManager - error delisting resource: an XAResourceHolderState with uniqueName=jdbc/dev1 XAResource=oracle.jdbc.driver.T4CXAResource@1d2bb9f (started) with XID a Bitronix XID [77326B2D6A617661352D7800000114D591018A0000002A : 77326B2D6A617661352D7800000114D5910A630000002F]
bitronix.tm.internal.BitronixSystemException: unknown XAResource oracle.jdbc.driver.T4CXAResource@1d2bb9f, it does not belong to a registered resource
at bitronix.tm.BitronixTransaction.delistResource(BitronixTransaction.java:84)
at bitronix.tm.internal.XAResourceManager.delistUnclosedResources(XAResourceManager.java:125)
at bitronix.tm.BitronixTransaction.commit(BitronixTransaction.java:123)
at bitronix.tm.BitronixTransactionManager.commit(BitronixTransactionManager.java:92)
...

then later on this error:

85360 [http-8080-Processor23] ERROR bitronix.tm.twopc.Rollbacker - cannot rollback resource an XAResourceHolderState with uniqueName=jdbc/dev1 XAResource=oracle.jdbc.driver.T4CXAResource@1d2bb9f (started) with XID a Bitronix XID [77326B2D6A617661352D7800000114D591018A0000002A : 77326B2D6A617661352D7800000114D5910A630000002F], error=XAER_RMFAIL, retrying in 10s
oracle.jdbc.xa.OracleXAException
at oracle.jdbc.xa.OracleXAResource.checkError(OracleXAResource.java:1045)
at oracle.jdbc.xa.client.OracleXAResource.rollback(OracleXAResource.java:869)
at bitronix.tm.twopc.Rollbacker.rollbackResource(Rollbacker.java:110)
at bitronix.tm.twopc.Rollbacker.access$000(Rollbacker.java:23)
at bitronix.tm.twopc.Rollbacker$RollbackJob.run(Rollbacker.java:201)
at bitronix.tm.twopc.executor.SyncExecutor.submit(SyncExecutor.java:12)
at bitronix.tm.twopc.Rollbacker.rollback(Rollbacker.java:53)
at bitronix.tm.BitronixTransaction.lastChanceRollback(BitronixTransaction.java:265)
at bitronix.tm.BitronixTransaction.commit(BitronixTransaction.java:144)
at bitronix.tm.BitronixTransactionManager.commit(BitronixTransactionManager.java:92)
...

see http://www.nabble.com/ConnectionPool-Features-tf4361021.html for more details.