PI76368: A class that is both Remote and Serializable is mis-categorized during marshalling

17.0.0.1: WebSphere Application Server Liberty 17.0.0.1
17.0.0.2: WebSphere Application Server Liberty 17.0.0.2
17.0.0.3: WebSphere Application Server Liberty 17.0.0.3
17.0.0.4: WebSphere Application Server Liberty 17.0.0.4
18.0.0.1: WebSphere Application Server Liberty 18.0.0.1
18.0.0.2: WebSphere Application Server Liberty 18.0.0.2
18.0.0.3: WebSphere Application Server Liberty 18.0.0.3
18.0.0.4: WebSphere Application Server Liberty 18.0.0.4
19.0.0.1: WebSphere Application Server Liberty 19.0.0.1
19.0.0.2: WebSphere Application Server Liberty 19.0.0.2
19.0.0.3: WebSphere Application Server Liberty 19.0.0.3
19.0.0.4: WebSphere Application Server Liberty 19.0.0.4
19.0.0.5: WebSphere Application Server Liberty 19.0.0.5
19.0.0.6: WebSphere Application Server Liberty 19.0.0.6
19.0.0.7: WebSphere Application Server Liberty 19.0.0.7
19.0.0.8: WebSphere Application Server Liberty 19.0.0.8
19.0.0.9: WebSphere Application Server Liberty 19.0.0.9
19.0.0.10: WebSphere Application Server Liberty 19.0.0.10
19.0.0.11: WebSphere Application Server Liberty 19.0.0.11
19.0.0.12: WebSphere Application Server Liberty 19.0.0.12
20.0.0.1: WebSphere Application Server Liberty 20.0.0.1
20.0.0.2: WebSphere Application Server Liberty 20.0.0.2
20.0.0.3: WebSphere Application Server Liberty 20.0.0.3
20.0.0.4: WebSphere Application Server Liberty 20.0.0.4
20.0.0.5: WebSphere Application Server Liberty 20.0.0.5
20.0.0.6: WebSphere Application Server Liberty 20.0.0.6
20.0.0.7: WebSphere Application Server Liberty 20.0.0.7
20.0.0.8: WebSphere Application Server Liberty 20.0.0.8
20.0.0.9: WebSphere Application Server Liberty 20.0.0.9
20.0.0.10: WebSphere Application Server Liberty 20.0.0.10
20.0.0.11: WebSphere Application Server Liberty 20.0.0.11
20.0.0.12: WebSphere Application Server Liberty 20.0.0.12

APAR status

• Closed as program error.

Error description

• The problem, when experienced, causes the following
  exception to be thrown:
  
  java.lang.ClassCastException:
  org.apache.yoko.rmi.impl.RemoteClassDescriptor incompatible
  with org.apache.yoko.rmi.impl.ValueDescriptor
  at
  org.apache.yoko.rmi.impl.ValueHandlerImpl.desc(ValueHandlerI
  mpl.java:54)
  at
  org.apache.yoko.rmi.impl.ValueHandlerImpl.writeReplace(Value
  HandlerImpl.java:194)
  at
  org.apache.yoko.orb.OB.ValueWriter.writeRMIValue(ValueWriter
  .java:424)
  at
  org.apache.yoko.orb.OB.ValueWriter.writeValue(ValueWriter.ja
  va:288)
  at
  org.apache.yoko.orb.CORBA.OutputStream.write_value(OutputStr
  eam.java:1315)
          ...
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Liberty                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: A class that is both Remote and         *
  *                      Serializable is mis-categorized during  *
  *                      marshalling                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem, when experienced, causes the following exception to
  be thrown:
  
  java.lang.ClassCastException:
  org.apache.yoko.rmi.impl.RemoteClassDescriptor incompatible with
  org.apache.yoko.rmi.impl.ValueDescriptor
          at
  org.apache.yoko.rmi.impl.ValueHandlerImpl.desc(ValueHandlerImpl.
  java:54)
          at
  org.apache.yoko.rmi.impl.ValueHandlerImpl.writeReplace(ValueHand
  lerImpl.java:194)
          at
  org.apache.yoko.orb.OB.ValueWriter.writeRMIValue(ValueWriter.jav
  a:424)
          at
  org.apache.yoko.orb.OB.ValueWriter.writeValue(ValueWriter.java:2
  88)
          at
  org.apache.yoko.orb.CORBA.OutputStream.write_value(OutputStream.
  java:1315)
          ...
  

Problem conclusion

• The fix corrects the categorization of classes that implement
  (directly or indirectly) both java.rmi.Remote and
  java.io.Serializable .
  
  The fix for this APAR is currently targeted for inclusion in fix
  pack 17.0.0.1.  Please refer to the Recommended Updates page for
  delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  LIBERTY PROFILE

• Fixed component ID

  5724J0814

Applicable component levels

• RCD0 PSY

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