PM55800: Client daemon uses 100% of the processor when no requests are being made

CICS Transaction Gateway Desktop Edition - V8.1 -
CICS Transaction Gateway Desktop Edition - V8.1 -
IBM CICS Transaction Gateway for Multiplatforms - Version 8.1 - AIX
IBM CICS Transaction Gateway for Multiplatforms - Version 8.1 - Linux on zSeries
IBM CICS Transaction Gateway for Multiplatforms - Version 8.1 - Solaris
IBM CICS Transaction Gateway for Multiplatforms - Version 8.1 - HP-UX on Itanium
IBM CICS Transaction Gateway for Multiplatforms - Version 8.1 - Windows
CICS Transaction Gateway for Multiplatforms V8.1 Fix Pack 4
CICS Transaction Gateway Desktop Edition V8.1 Fix Pack 4
CICS Transaction Gateway for Multiplatforms V9.0 (all supported platforms)
CICS Transaction Gateway Desktop Edition V9.0 (all supported platforms)
CICS Transaction Gateway for Multiplatforms V8.0 Fix Pack 6
CICS Transaction Gateway Desktop Edition V8.0 Fix Pack 6
CICS Transaction Gateway Desktop Edition V8.1 Fix Pack 5
CICS Transaction Gateway for Multiplatforms V8.1 Fix Pack 5
CICS Transaction Gateway Desktop Edition - V8.1 - Linux on POWER
CICS Transaction Gateway Desktop Edition - V8.1 - Solaris

APAR status

• Closed as program error.

Error description

• The Client daemon process (cclclnt) uses 100% of the processor
  when no requests are being made. This can affect actions,
  such as CICS TG attempting to reconnect to servers that are
  unavailable. When a request is made, such as an ECI request or
  status request using cicscli/l, the 100% processor usage ends
  and the request is processed correctly.
  

Local fix

• Run the 'cicscli -l' command to end the 100% processor usage.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of CICS Transaction Gateway on     *
  *                 UNIX or Linux platforms.                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: The Client daemon uses 100% of the      *
  *                      processor when no requests are being    *
  *                      made                                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  CICS TG uses messages internally to trigger actions at specific
  times. Under certain timing conditions an internal flag is not
  reset correctly when processing these messages. This incorrect
  flag value causes the Client daemon to loop until another
  message is processed.
  

Problem conclusion

• CICS Transaction Gateway has been changed so that flag is reset
  correctly. This prevents the loop from occurring, therefore
  resolving the problem.
  

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:

Modules/Macros

• CTGV8DUM
  

Fix information

• Fixed component name

  CICS TRNS GATE

• Fixed component ID

  5724I8102

Applicable component levels

• R800 PSY

     UP

• R810 PSY

     UP