IT42339: Bad data arrived at MQ's socket in an MQ client application, butthe required FDC was not written

APAR status

• Closed as program error.

Error description

• Bad data was received at MQ's socket.  In this case MQ has to
  write an FDC record under /var/mqm/errors, to enable
  investigation of the bad data.
  
  Instead, no FDC was written, but an error message was written,
  including this text:
  
  AMQ9213E : The return code from the TCP/IP (ioctl) call was 9.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Client applications (or server-side MQ code) in which some bad
  data is received at MQ's socket.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  After receiving data it cannot understand, the MQ library code
  running in the application intends to write an FDC file.
  
  First, this MQ code attempts to read any further data there
  might be in the TCP/IP receive buffer, so it may be included in
  the FDC dumps.  To find whether there is any data, MQ first
  calls ioctl.
  
  If this ioctl call fails for any reason, the MQ code does not
  then write the FDC file.  But it should have continued to write
  the FDC file with the data it had successfully received before
  the ioctl call.
  

Problem conclusion

• The MQ code has been corrected so that it will continue to write
  the FDC file with the data it had successfully received before
  the ioctl call, even if the ioctl call fails.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.2 LTS   9.2.0.10
  v9.3 LTS   9.3.0.5
  v9.x CD    9.3.2
  
  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

  MQ BASE V9.2

• Fixed component ID

  5724H7281

Applicable component levels