PM06601: AN ABEND 4094 HAS OCCURRED AT OFFSET X'FFFFFFFF' IN MODULE DFHAPLJ1

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The initialization of a JVM in CICS fails with an ABEND 4094
  after Java was migrated from 1.4.2 to Java 1.5.
  
  The dump showed that a one byte overlay x'00' did happen in
  the heap storage after a x"448" bytes area which was obtained
  by the sjpjp_process_system_properties routine in module
  DFHSJPJP. This area was filled with JVMs classpath.
  
  It was determined that the routine in DFHSJPJP that works out
  the total length of the classpath that is going to be built
  is 1 byte out. It uses STRLEN to get the lengths of each
  string that is going to be concatenated. It allows for extra
  ':' characters to be inserted to make a valid classpath, but
  it does not allow for the final null.
  

Local fix

• not available
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Attempts to start a JVM fail with       *
  *                      abends ASRA and ASRB.                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An ASRB ABEND and an ASRA ABEND occurs with attempts to run a
  Java program. This problem is caused by a 1 byte overlay of a
  trailing null. The area causing the overlay was obtained by CICS
  code to construct the classpath to pass to the JVM. The length
  of the area that was malloc'ed was 1 byte too short.  It was the
  exact length of the data but did not allow for the trailing null
  character which C code uses to terminate strings. This null had
  overlaid the following control block and caused the failure.
  
  Additional keywords: ABENDASRA ABENDASRB
  

Problem conclusion

• DFHSJPJP has been amended so that the null terminator will be
  taken into account when the length of the storage to be
  malloc'ed for the classpath, is calculated.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

  PM04003

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

  UK54782

Modules/Macros

• DESSJCS  DFHSJCL  DFHSJCS  DFHSJCSH DFHSJPJP
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R603 PSY UK54783

     UP10/03/10 P F003

• R600 PSN

     UP

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.