IJ55602: A SERIALIZATION MISMATCH BETWEEN JAVA 8 AND NEWER VERSIONS CAN CAUSE STREAMCORRUPTEDEXCEPTION DURING DESERIALIZATION OF DATE.

APAR status

• Closed as program error.

Error description

• Error Message: None
  .
  Stack Trace:
  com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDe
  legate.java:638)
      at
  com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:5
  08)
      at com.ibm.rmi.iiop.ORB.process(ORB.java:613)
      at com.ibm.CORBA.iiop.ORB.process(ORB.java:1584)
      at
  com.ibm.rmi.iiop.Connection.doRequestWork(Connection.java:3190)
      at com.ibm.rmi.iiop.Connection.doWork(Connection.java:3051)
      at
  com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:64)
      at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:118)
      at
  com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1909)
  Caused by: java.io.StreamCorruptedException: Default data must
  be read first
      at
  com.ibm.rmi.io.IIOPInputStream.readLong(IIOPInputStream.java:132
  5)
      at java.util.Date.readObject(Date.java:1343)
  .
  

Local fix

Problem summary

• A serialization compatibility issue arises due to differing
  behaviors between Java 8 and later Java versions. Newer Java
  versions use defaultWriteObject() during serialization, while
  Java 8 expects deserialization to proceed through the
  readObject() method rather than relying solely on
  defaultReadObject() when java.util.Date is involved. This
  mismatch leads to incompatibility when exchanging serialized
  objects between these Java versions and Java 8 throws
  "java.io.StreamCorruptedException: Default data must be read
  first".
  

Problem conclusion

• The behavior is controlled by the
  com.ibm.CORBA.suppressDefaultWriteObjectException property,
  which defaults to false and should be configured in the
  orb.properties file.
  * When set to false and defaultWriteObject is used, a
  StreamCorruptedException is thrown with the message: "Default
  data must be read first."
  * When set to true, the exception is suppressed, and a warning
  is logged with the same message in the Orb logs.
  .
  This APAR will be fixed in the following Releases:
  .
  IBM Semeru Runtimes
  IBM SDK, Java Technology Edition
     8    SR8 FP55  (8.0.8.55)
  .
  Downloads and supplementary documentation can be found at the
  following locations:
  - For non z/OS operating systems:
    - IBM Semeru Runtimes, Version 11 and later
      https://www.ibm.com/semeru-runtimes/downloads/
    - IBM SDK, Java Technology Edition, Version 8
      https://www.ibm.com/support/pages/java-sdk-downloads/
  - For the z/OS operating system:
    - Java SDK Products on z/OS
      https://www.ibm.com/support/pages/java-sdk-products-zos
  

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

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels