PH09914: SOS LSQA BELOW 16M LINE. L8 TCBS HOLD STORAGE AFTER THE ESM PASSWORD VALIDATION HAS COMPLETED.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Delays in response from an ESM may result in the system going
  Short on Shortage (SOS) in high private LSQA 24bit storage.
  Resulting in abends, such as S878 and S80A.
  LSQA contains TCBs and parmlists for the ESM. CICS L8 TCBs are
  not disassociated from the task after being used for calling the
  ESM. Therefore, storage remains for the duration of the task. If
  there is a backlog of tasks, due to delays in ESM response time,
  then their combined storage usage can exceed the available LSQA.
  

Local fix

• reduce SIT parm DSALIM
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abends 80A and 878 after running out of *
  *                      LSQA.                                   *
  ****************************************************************
  It is possible to suffer abend80A and abend878 when a large
  number of security calls are being issued to the External
  Security Manager (ESM).
  Each of the calls to the ESM use an L8 TCB. Each of these TCBs
  will use some LSQA storage which can eventually run out.
  The L8 TCB is being held for longer than the actual security
  call making the exhaustion of the LSQA more likely should the
  ESM suffer some sort of response slow down.
  

Problem conclusion

• CICS has been changed to release the L8 TCB as soon as the
  security call has completed.
  

Temporary fix

Comments

• ×**** PE19/08/21 FIX IN ERROR. SEE APAR PH15917  FOR DESCRIPTION
  

APAR Information

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

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

  UI64408 UI64409 UI64410 UI64411

Modules/Macros

• DFHDSAT  DFHDSATT DFHDSATX DFHDSATY DFHXSAD  DFHXSCT  DFHXSDM
  DFHXSFL  DFHXSIS  DFHXSKR  DFHXSLU  DFHXSPW  DFHXSRC  DFHXSSB
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R000 PSY UI64411

     UP19/07/26 P F907 ¢

• R100 PSY UI64410

     UP19/07/27 P F907 ¢

• R200 PSY UI64408

     UP19/07/26 P F907 ¢

• R900 PSY UI64409

     UP19/07/27 P F907 ¢

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.