IV46993: ADD SERVICABILITY TO THE TEMS FOR CERTAIN CRASH SCENARIOS.

IBM Tivoli Monitoring 6.2.3 Fix Pack 5 (6.2.3-TIV-ITM-FP0005)

APAR status

• Closed as program error.

Error description

• RTEMS Crashes when multiple agents on the same system (or HACMP
  environment)
  access the RTEMS using the same name and different ip addresses.
  In this customer's environment the agents were in an HACMP
  configuration and the symptom was multiple agents being
  restarted on the same system after the previous agents hung and
  did not shut down properly.
  

Local fix

• Shut down the agents to avoid duplicate agents.
  

Problem summary

• When duplicate MQ Configuration agents are registered with the
  monitoring server with the same agent name (usually from HACMP
  servers), the process of starting situations on these duplicate
  agent instances may cause the monitoring server to crash. This
  is because of a possible deletion of a request handle that is
  used by another thread as well.
  

Problem conclusion

• We are unable to identify the extra unlock mechanism in the code
   that leads to the crash. So, we have added serviceability
  statements around the same area of code to gather better trace
  logs if such a crash occurs again.
  
  The fix for this APAR is contained in the following maintenance
  packages:
  | fix pack | 6.2.3-TIV-ITM-FP0005
  

Temporary fix

• Ensure that only one instance of an agent is active at a time
  and registers with the monitoring server from the same host.
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  OA44532

Fix information

• Fixed component name

  TEMA

• Fixed component ID

  5724C04TE

Applicable component levels

• R623 PSY

     UP