Migrating from a lower to higher version of B*MS 6 product throws java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version

Solution Verified - Updated -

Issue

  • The following Error is thrown while creating a new KieSession after migrating existing code from BRMS/BPMS 6.0.1 to BRMS/BPMS 6.0.2 or any higher version.
java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version; class=org/jbpm/Process_org$u46$jbpm$u46$Test_Sampling1355201410, offset=6
  • Users are facing issue while they are going to fire rules in BRMS/BPMS 6.1, but rules fire successfully in version BRMS/BPMS 6.0.x. What could be the root cause behind this issue?
java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version;  offset=6

Environment

  • Red Hat JBoss BPM Suite (BPMS)
    • 6.0.x
    • 6.1
  • Red Hat JBoss BRMS (BRMS)
    • 6.0.x
    • 6.1

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