OA28446: STOPPING ANY ACTIVE TASK THAT USES CNMCALRT AS ITS LOAD MODULE CAUSES THE NETVALRT PPI RECEIVER TO BE MARKED INACTIVE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Stopping either the CNMCALRT or AOFALRT tasks when they are both
  active causes the NETVALRT PPI receiver to be marked inactive.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Tivoli NetView users of the CNMCALRT     *
  *                 program.                                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: When two or more tasks running the      *
  *                      CNMCALRT program are started (for       *
  *                      example the AOFCALRT and CNMCALRT tasks *
  *                      which use the CNMCALRT program are      *
  *                      started) in either the same or          *
  *                      different address spaces and any one of *
  *                      them is stopped using the NetView STOP  *
  *                      TASK=... command, the NETVALRT PPI      *
  *                      receiver (owned by the first instance   *
  *                      of the CNMCALRT program) is marked      *
  *                      inactive and the owning CNMCALRT        *
  *                      program (assuming it was not the one    *
  *                      stopped) will never be posted again     *
  *                      unless it is recycled.                  *
  *                      Additional search criteria: CNM281I     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The CNMCALRT program is coded to check to make sure the NETVALRT
  receiver is inactive. If it finds the NETVALRT receiver to be
  active it issues the following message:
  CNM281I NETVIEW ALERT RECEIVER ID= NETVALRT IS ALREADY ACTIVE
  and continues initialization until it is fully active. However,
  if the task running CNMCALRT under these conditions is stopped
  using the NetView STOP TASK=... command, the CNMCALRT program
  will issue a PPI terminate request for the PPI NETVALRT receiver
  causing it to become inactive. This will prevent the owner of
  the NETVALRT PPI receiver from ever being posted with new alerts
  unless the owner is recycled.
  While investigating this problem I also noticed that there is a
  new STOP command function (PPI=...) in NetView V5R3. Issuing
  this command against any active PPI receiver would cause the
  owning PPI receiver task to never be posted. Issuing the new
  STOP PPI=... command against an inactive PPI receiver will
  erroneously delete the PPI receiver.
  

Problem conclusion

• The CNMCALRT program is being changed to use the latest DTR size
  for its respective NetView release and to turn on the exclusive
  use DTR flag when initializing the NETVALRT PPI receiver. Also
  when it is discovered that the NETVALRT PPI receiver is already
  active, CNMCALRT will terminate without terminating the NETVALRT
  receiver.
  CNMCPCCI and CNMCPCUI are being changed to prevent the STOP PPI=
  command from deleting an already inactive PPI receiver. The STOP
  PPI=... command will issue the following instead:
  CNM236I STOP-PPI : abTermRcvr FAILED WITH RETURN CODE 15
  

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:

  UA47615 UA47616

Modules/Macros

• CNMCALRT CNMCPCCI CNMCPCUI
  

Fix information

• Fixed component name

  NETVIEW FOR Z/O

• Fixed component ID

  5697ENV00

Applicable component levels

• R520 PSY UA47615

     UP09/08/04 P F908

• R53B PSY UA47616

     UP09/08/04 P F908

Fix is available

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