IX90134: WHILE MARSHALLING CLASSNOTFOUNDEXCEPTION IS THROWN FOR CERTAIN P ROXY CLASSES.

APAR status

• Closed as program error.

Error description

• Error Message: java.rmi.MarshalException: CORBA
  MARSHAL 0x4942f896 No; nested exception is:
  
  org.omg.CORBA.MARSHAL: Unable to read value from underlying
  bridge :
  Unable to read value from underlying bridge :
  ClassNotFoundException
  a.b.c.$Proxy29  vmcid: IBM  minor code: 896  completed: No
  .
  Stack Trace: Caused by: java.lang.ClassNotFoundException:
  a.b.c.$Proxy29
   at
  com.ibm.rmi.util.RepositoryId.loadClass(RepositoryId.java:676)
  
   at
  com.ibm.rmi.util.RepositoryId.checkClassCache(RepositoryId.java:
  645)
   at
  com.ibm.rmi.util.RepositoryId.getClassFromType(RepositoryId.java
  :
  634)
  
   at
  com.ibm.rmi.iiop.CDRReader.fast_read_value(CDRReader.java:1699)
  
   ... 13 more
  .
  

Local fix

Problem summary

• Proxy objects are generated with package name prepended from
  Java 6 SR12 onwards.
  I.e. com.sun.proxy.$Proxy29 with Java 6 SR12 onwards and
  $Proxy29 with older release.
  For Java 6.0.1 its SR 5
  For Java 7 its SR 4
  For Java 7.0.1 its since GA.
  This lead to CNFE while serializing proxy objects. Orb code have
  been modified to fix the issue.
  

Problem conclusion

• This APAR will be fixed in the following Java Releases:
     6    SR16      (6.0.16.0)
     6 R1 SR8       (6.1.8.0)
     7    SR7       (7.0.7.0)
     7 R1 SR1       (7.1.1.0)
  .
  Whether the class is of type proxy is determined by
  Proxy.isProxyClass() and while serialization backward
  compatibility is ensured with JDK generating proxy objects
  without the package prepended to them.
  Without this APAR  Proxy object serialization will work
  1. Between sender and receiver if the proxy object does not have
  a package name specified.
  2. If at sender side the proxy object does not have a package
  name specified, however it can have the package name specified
  at the receiver side.
  It will fail with CNFE for proxy Object, If at sender the proxy
  object has a package name specified, and not at the receiver.
  With this APAr Proxy object serialization will work  -
  1. Between sender and receiver if the proxy object does not have
  a package name specified.
  2. Between sender and receiver if the proxy objects have a
  package name specified.
  3. If at sender, the proxy object does not have a package name
  specified, however it can have the package name specified at the
  receiver.
  It will fail with CNFE for proxy Object, If at sender the proxy
  object has a package name specified, and not at the receiver.
  Also this fix needs to be applied on all JVMs (e.g Server,
  client, Naming Service)
  

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

  ORB

• Fixed component ID

  620700123

Applicable component levels

• R600 PSY

     UP

• R260 PSY

     UP