"ARJUNA016009: Caught:: java.lang.NullPointerException" for Xid from Oracle XAResource in JBoss EAP

Environment

• Red Hat JBoss Enterprise Application Platform (EAP)
  • 7
  • 6
• Oracle

Issue

Encountering a repeated warning in the JBoss server.log

... WARN  [com.arjuna.ats.jta] (Periodic Recovery) ARJUNA016009: Caught:: java.lang.NullPointerException
        at com.arjuna.ats.jta.xa.XidImple.copy(XidImple.java:190)
        at com.arjuna.ats.jta.xa.XidImple.<init>(XidImple.java:69)
        at com.arjuna.ats.internal.jta.recovery.arjunacore.RecoveryXids.contains(RecoveryXids.java:153)
        at com.arjuna.ats.internal.jta.recovery.arjunacore.RecoveryXids.updateIfEquivalentRM(RecoveryXids.java:203)
        at com.arjuna.ats.internal.jta.recovery.arjunacore.XARecoveryModule.refreshXidScansForEquivalentXAResourceImpl(XARecoveryModule.java:861)
        at com.arjuna.ats.internal.jta.recovery.arjunacore.XARecoveryModule.xaRecoveryFirstPass(XARecoveryModule.java:629)
        at com.arjuna.ats.internal.jta.recovery.arjunacore.XARecoveryModule.periodicWorkFirstPass(XARecoveryModule.java:189)
        at com.arjuna.ats.internal.arjuna.recovery.PeriodicRecovery.doWorkInternal(PeriodicRecovery.java:765)
        at com.arjuna.ats.internal.arjuna.recovery.PeriodicRecovery.run(PeriodicRecovery.java:377)

Resolution

• This issue lies outside of the EAP implementation.
  • Contact Oracle Support for additional assistance.
• There is an open This content is not included.issue to improve the error reporting (in the EAP layer) for the corrupt Xid so that the specific pool associated with the invalid Xid can be identified for troubleshooting (i.e. making it possible to identify the database endpoint from which the invalid Xid was returned).

Root Cause

• The global transaction identifier is null for an Content from javaee.github.io is not included.Xid returned by Oracle when the Content from javaee.github.io is not included.XAResource.recover() method was called.
• This is not compliant with JTA which requires a (non-null) Content from javaee.github.io is not included.byte array.¹
  • The Xid instance returned by the resource is invalid/corrupt (missing data required for recovery) and is, therefore, non-recoverable.

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