IT28065: A QUEUE SERVER REPORTS A FDC AND CAN GO DOWN IF IT RECEIVES A MESSAGE WITH GARBAGE CONTENT

APAR status

• Closed as program error.

Error description

• Some unknown application sent a message to the queue server.
  The message had some garbage content.  The queue server
  reported an FDC complaining about IPC problems.  It was then
  rendered inoperable.  A restart of the queue server solved the
  problem.
  

Local fix

• NA
  

Problem summary

•  If the Queueserver processes a random message,
  which passed the message check, the Queueserver can become
  unresponsive. That can happen when a process (a customer
  application for instance) accidentally opens the Queueserver
  and sends an application message.
  The garbage message has not been stored in the filesystem.
  A root cause analysis is then no longer possible.
  If the message content were present, this can help to identify
  the application that sent the message.
  

Problem conclusion

•  The Queueserver creates an FDC and dumps the
  message content if the message check identified a garbage
  message. If a follow up garbage message passes the message check
  and makes the Queuserver unresponsive, there are at least FDCs
  containing formerly received garbage messages. Their content
  enables the user to identify the application which sent the
  garbage message.
  

Temporary fix

•  There is no workaround for this problem.
  

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

  WEBS MQ NSS MIP

• Fixed component ID

  5724A3901

Applicable component levels