PM31807: IRLM SUPPORT FOR DB2 ZPARM DEL_CFSTRUCTS_ON_RESTART(PM28925) TO DELETE IRLM LOCK STRUCTURE ON GROUP RESTARTS.

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• When DB2 zparm DEL_CFSTRUCTS_ON_RESTART(PM28925) is set, IRLM
  will attempt to delete lock structure before connecting to it
  during DB2 restart. The lock structure could be deleted if there
  are no active connections to it. IRLM will issue DXR185I message
  if it was able to issue IXLFORCE successfully against the lock
  structure.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All HIR2230 (IRLM230) and DB2 v10 users      *
  *                 datasharing SYSPLEXDS.                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: IRLM support for new DB2 v10 zparm      *
  *                      to delete the IRLM lock structure prior *
  *                      to initiating group restart by DB2.     *
  ****************************************************************
  * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
  ****************************************************************
  There are times such as during disaster recovery when the
  CF has stale information which will cause invalid data to be
  present after recovery if not cleared.  To enable the user
  to provide a sure and rapid method for guaranteeing this is
  done in known situations, a new DB2 V10 ZPARM is created.
  This zparm, DEL_CFSTRUCTS_ON_RESTART, enables DB2 to tell
  IRLM during startup, to force the structure and failed
  connection data.
  

Problem conclusion

Temporary fix

Comments

• This APAR provides support for DB2 APAR PM28925 to allow
  deletion of IRLM lock structure when requested during a DB2
  group restart event. IRLM will attempt to delete the lock
  structure prior to connecting to it when the new zparm
  DEL_CFSTRUCTS_ON_RESTART is specified, and DB2 uses it.
  IRLM will issue IXLFORCE against the lock structure to
  de-allocate the structure and force any failed-persistent
  connections to the structure at that time. This will ensure that
  the group allocates and connects to a new lock structure when a
  group restart is desired.  This IXLFORCE will be successful only
  for the first member to connect to the group since it requires
  no active connection be present. IRLM will issue a new
  message, MSGDXR185I if the force de-allocation of the lock
  structure is successful.
    DXR185I irlmnm IXLFORCE SUCCESSFUL FOR LOCK STRUCTURE LOCK1
  XES also issues IXC579I for the de-allocation of the
  structure against which IXLFORCE was issued.
  

APAR Information

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

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

  UK65920

Modules/Macros

•    DXRRHT   DXRRLIPL DXRRL040 DXRRL210 DXRRL710
  

Fix information

• Fixed component name

  IRLM V2

• Fixed component ID

  569516401

Applicable component levels

• R230 PSY UK65920

     UP11/04/03 P F103

Fix is available

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