IT29472: strmqm fails with xecP_E_ACCESS_DENIED after system reboot

APAR status

• Closed as program error.

Error description

• Queue manager failed to start after system reboot and strmqm
  reported the reason code
  545284129 which is xecP_E_ACCESS_DENIED.
  
  # strmqm QM2
  IBM MQ queue manager 'QM2' starting.
  The queue manager is associated with installation
  'Installation1'.
  The queue manager ended for reason 545284129, ''.
  
  # mqrc 545284129
  
   545284129  0x20806021  xecP_E_ACCESS_DENIED
  
   MQ trace captured the following error when verifying the MQ IPC
  file.
  
    00:07:24.645263    31900.1           :            About to
  lookup id for file
  /var/mqm/qmgrs/TESTQM/@qmpersist/shmem/gems1/shm.0.
   00:07:24.645267    31900.1           :       ---------{
  xstVerifySysVIdInFile
   00:07:24.645281    31900.1           :            Data:
  0x00000000 0x00000000 0x0000000d 0xffffffff
   00:07:24.645285    31900.1           :       ---------}!
  xstVerifySysVIdInFile rc=xecP_E_ACCESS_DENIED
  

Local fix

• Review the "Problem Description" section,  delete the affected
  MQ IPC file(s)
  (e.g. /var/mqm/qmgrs/TESTQM/@qmpersist/shmem/myhost/shm.0)  and
  then
  start the queue manager.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users using MQ in a server running with other products which use
  shared memory
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  Shared memory is one of the resources used by MQ. During queue
  manager startup MQ tried to access a shared memory set it was
  using in the previous queue manager session, but currently owned
  by a non MQ process and mqm user did not have access to that
  shared memory set. MQ did not correctly handle the error
  condition and this caused failure in queue manager startup.
  

Problem conclusion

• MQ code has been modified to resolve the failure in strmqm when
  the shared memory id used by MQ is allocated to a non-MQ
  process.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.1 CD    9.1.4
  v9.1 LTS   9.1.0.4
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

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:

Fix information

• Fixed component name

  IBM MQ BASE MP

• Fixed component ID

  5724H7271

Applicable component levels