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Is a distributed two-phase commit (2PC) required when combining JMS and Database operations within a Message Driver Bean (MDB)?

April 26, 2017combining database distributed JMS message operations two-phase

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Is a distributed two-phase commit (2PC) required when combining JMS and Database operations within a Message Driver Bean (MDB)?

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No, as long as the business logic inside the MDB uses the same Data Source and username/password, all DS.getConnection calls return the same physical connection. Therefore, at commit time only one resource is enlisted with JTA so one-phase commit is performed.