Duplicate Messages Redelivered Using WebLogic Server Foreign JMS with MQ V6 Client (Doc ID 1063720.1)

Last updated on SEPTEMBER 26, 2022

Applies to:

Symptoms

The customer has the following JMS achietecture:

• Their WebLogic Server (WLS) talks to an IBM Websphere MQ Server V6 using a Foreign JMS server with the MQ v6.0.2.6 client.
• They have MDBs deployed in WLS and listening to the queue on the MQ through foreign JMS.

If an MDB throws a runtime exception, the message is rolled back to MQ, but after that the message
is redelivered to the MDB twice (which is a wrong behavior). Using the MQ v5.3 client jars, only one
copy of the message is redelivered as expected.

The issue does not occur with a standalone client (running outside WebLogic) listening directly to the MQ, the behavior is fine in case of both MQ v6.0.2.6 and MQ v5.3 jars.

Cause

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