PI53468: RATIONAL COBOL RUNTIME 6.1.0 IMS TRANSACTION HAS MEMORY LEAK

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• User runs an RBD generated IMS transaction, repeatedly. It has
  a memory leak and causes an abend
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: IMSTM users that use EGL are affected by     *
  *                 this APAR.                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: There is a memory leak in the IMS       *
  *                      environment with EGL. The               *
  *                      functionality is fine, but each         *
  *                      transaction can cause a leak            *
  *                      of the heap memory blocks.              *
  *                      This was because the runtime call       *
  *                      to release this memory was              *
  *                      skipped due to a mismatch in            *
  *                      the parameter passed. The EGL           *
  *                      generated cobol program was             *
  *                      skipped due to a mismatch in            *
  *                      the parameter passed. The EGL           *
  *                      generated cobol program was             *
  *                      passing "EGLFREE" but the               *
  *                      runtime was looking for                 *
  *                      "EGLFREE " (notice the space).          *
  *                      Because the cobol program's             *
  *                      value did not have a trailing space,    *
  *                      this caused the runtime function        *
  *                      to not happen, as the parameter         *
  *                      was not determinable. This              *
  *                      in turn caused the memory to            *
  *                      remain allocated, but unused.           *
  ****************************************************************
  * RECOMMENDATION: Apply this maintenance                       *
  ****************************************************************
  There is a memory leak in the IMS environment with EGL. The
  functionality is fine, but each transaction can cause a leak
  of the heap memory blocks. This was because the runtime call
  to release this memory was skipped due to a mismatch in the
  parameter passed. The EGL generated cobol program was
  passing "EGLFREE" but the runtime was looking for "EGLFREE "
  (notice the space). Because the cobol program's value did
  not have a trailing space, this caused the runtime function
  to not happen, as the parameter was not determinable. This
  in turn caused the memory to remain allocated, but unused.
  

Problem conclusion

• The runtime has been updated to check for "EGLFREE" without the
  need for any trailing space. No programs need to be regenerated
  as this is entirely a runtime fix.
  

Temporary fix

Comments

• ×**** PE16/11/07 PTF IN ERROR. SEE APAR PI71919  FOR DESCRIPTION
  

APAR Information

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

  PI53463

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

Modules/Macros

• ELAHPMEM
  

Fix information

• Fixed component name

  RATL COBOL RUNT

• Fixed component ID

  5648F6600

Applicable component levels

• R750 PSY UI40795

     UP16/09/30 I 1000

Fix is available

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