PH70166: SOS IN ECDSA AS A RESULT OF START CHANNEL SYSID(SYSB) NOCHECK COMMANDS IN AN MRO ENVIRONMENT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• START CHANNEL SYSID(SYSB) NOCHECK commands cause SYSB to go SOS
  in 31-bit storage when SYSA and SYSB are connected via MRO.
  This happens because the mirror task that runs on SYSB does not
  delete the channel it receives from SYSA.  This causes the
  PGCRCB, PGCPCB, PGCHCB and PGCSCB sub-pools in the ECDSA to
  grow and grow in size.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: A short on storage condition in ECDSA   *
  *                      when using MRO or LU6.2 START CHANNEL   *
  *                      with the NOCHECK option.                *
  ****************************************************************
  Transactions started on a target region connected over MRO or
  LU6.2 using START CHANNEL commands with the NOCHECK option cause
  storage leaks in the ECDSA. The leak is observed in the PGCRCB,
  PGCPCB, PGCHCB, and PGCSCB subpools.
  

Problem conclusion

• DFHAPPG has been updated to ensure that channel and container
  subpool storage is always freed after completing a transaction
  started using the START option with NOCHECK.
  

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:

  UO08236 UO08237 UO08238

Modules/Macros

• DFHAPPG
  

Fix information

• Fixed component name

  CICS TS Z/OS V6

• Fixed component ID

  5655YA100

Applicable component levels

• R400 PSY UO08238

     UP26/06/17 P F606

• R500 PSY UO08237

     UP26/06/17 P F606

• R600 PSY UO08236

     UP26/06/17 P F606

Fix is available

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