IT15317: MQ FOR NSS 5.3.1 INCOMING CONNECTIONS NOT ASSIGNED TO AGENTS THAT HAVE A LONG TERM CONNECTION.

APAR status

• Closed as program error.

Error description

• WebSphere MQ for NSS 5.3.1 Under some conditions agents stay
  alive but don't accept new connections. That is the case if an
  agent has reached the maximum number of connections he is
  allowed to handle during his lifetime but the agent can't
  terminate before the last connection has been closed. The whole
  MQ system parallelism is getting stalled if the number of
  agents which have reached this state is increasing. If all
  agents have reached this state and no agents can be added
  because of another system limit, the whole MQ system is
  unreachable.
  

Local fix

Problem summary

• Under some conditions agents stay alive but don't accept new
  connections. That is the case if an agent has reached the
  maximum number of connections it is allowed to handle during
  its lifetime but the agent can't terminate before the last
  connection has been closed.
  

Problem conclusion

• If the maximum number of agents are running and all of them
  have reached their reuse count, an incoming connection will
  be dispatched to one of them.
  

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

  WEBS MQ NSS ITA

• Fixed component ID

  5724A3902

Applicable component levels