Executing a jBPM process results in a org.hibernate.StaleObjectStateException on SOA-P 4.3.0 CP02

Solution Verified - Updated -

Issue

We run into problems related to org.hibernate.StaleObjectStateException during the execution of ExecuteNodeJob. For example:

ERROR [org.hibernate.event.def.AbstractFlushingEventListener] (JbpmJobExector:10.10.10.10:1:) 
   Could not synchronize database state with session
   org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction 
   (or unsaved-value mapping was incorrect): [org.jbpm.job.ExecuteNodeJob#12345]

These race conditions even occur when there is only a single JobExecutorThread configured.

Environment

  • JBoss Enterprise SOA Platform (SOA-P) 4.3 CP02 (jBPM 3.2.7)

  • JBoss Enterprise SOA Platform (SOA-P) 4.3 CP02 with SOA-1514 patch applied (jBPM 3.2.8_SOA)

  • jBPM configured with a single JobExecutorThread
  • Non-clustered environment

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