Could not synchronize database state with session org.hibernate.exception.LockAcquisitionException with higher load in jBPM 5/6

Solution Unverified - Updated -

Issue

While executing stress tests, during phases of high concurrency, we are getting this exception:

Could not synchronize database state with session
org.hibernate.exception.LockAcquisitionException: could not delete: [org.jbpm.persistence.processinstance.ProcessInstanceInfo#74]
[...]

caused by:
"ORA-00060: deadlock detected while waiting for resource"

Environment

  • Red Hat JBoss BRMS
    • 5.3.x
  • Red Hat JBoss BPM Suite
    • 6.0.x

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