PH59257: LOCK HELD WHILE QSAM FILE OPEN IN AUTOMATED MODE FOR WRITE

APAR status

• Closed as program error.

Error description

• <p>When a QSAM file was open in automated mode for write a lock
  was held on the QSAMWrite node's message flow instance for the
  duration of the file being open. This lock was to stop any other
  processes from making changes to the message flow until the file
  closed, preventing premature closure of the file. However, for a
  file open for a long time, any attempt to make changes to the
  message flow (such as changing message flow statistics settings)
  caused the admin process to wait for a long time too, until the
  file closed, making the integration server appear to hang as no
  subsequent admin messages could be processed so the integration
  server became unresponsive.</p><p> </p><p>This APAR changes
  processing to stop the lock being held for the duration of an
  automated file being open for QSAM write. A consequence of this
  change is that if a message flow containing a QSAMWrite node is
  redeployed when a file is open in automated mode, the file will
  be closed as part of the redeploy processing.</p>
  

Local fix

• NA
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users of the QSAMWrite node in IBM Integration Bus v10.1
  
  
  Platforms affected:
  z/OS
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When the QSAMWrite node is operating in automated mode and holds
  a file open for a long duration, admin commands on the message
  flow can appear to hang with the following message seen and the
  integration server becoming unresponsive
  
  BIP8034E An internal configuration response message not received
  

Problem conclusion

• This APAR changes processing to stop the lock being held for the
  duration of an automated file being open for QSAM write. A
  consequence of this change is that if a message flow containing
  a QSAMWrite node is redeployed when a file is open in automated
  mode, the file will be closed as part of the redeploy
  processing.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v10.1      10.1.0.3
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

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

  INT BUS FOR Z/O

• Fixed component ID

  5655AB110

Applicable component levels