5. Maintenance › 5.18 - Checkpoint Cleanup Option

5.18 - Checkpoint Cleanup Option

 The following sections discuss the various options for
 enabling or disabling the Checkpoint Cleanup option either
 globally for all CA MICS units, or for select CA MICS units.
 
 The Checkpoint Cleanup Option allows you to set a limit on
 how long out-of-date checkpoint update time range entries
 should be retained in the checkpoint data set before they are
 automatically removed during DAILY processing.  The option
 applies to the unit checkpoint data set as well as any
 incremental checkpoint data sets associated with the unit.
 
 The removal of out-of-date entries ensures there will be
 sufficient entries available for any new system or subsystems
 to be processed, thereby avoiding a U410 abend in the
 incremental or DAILY update jobs.  Removing unneeded entries
 also enables you to confine the checkpoint data set to a
 reasonable size.
 
 The CKPTLIMIT statement controls the Checkpoint Cleanup
 option.  The CKPTLIMIT statement can be specified in both
 sharedprefix.MICS.PARMS(CPLXDEF) and prefix.MICS.PARMS(SITE).
 
 The CKPTLIMIT statement has the following syntax:
 
 
      CKPTLIMIT parameter...
 
 
 where parameter must be a number between 0 and 999 that
 specifies the number of days the checkpoint entries should be
 retained.  Any entries older than the current run date of the
 CA MICS DAILY job minus this value, will be deleted.
 
 A parameter value of 0 disables the option; it is
 useful to disable the option for a particular unit when it
 has been enabled at the complex level.
 
 Setting the CKPTLIMIT nnn option at the complex level using
 sharedprefix.MICS.PARMS(CPLXDEF) allows you to maintain
 all the unit checkpoint data sets with just one parameter.
 
 Alternatively, you can activate the option in select units
 by specifying the option in prefix.MICS.PARMS(SITE) for only
 those units.
 
 Note that this option can be set at the complex level and
 overridden at the unit level for select units, or disabled
 for select units.
 
 These sections  describe the steps required to
 enable or disable the Checkpoint Cleanup option:
 
     1 - Enable Checkpoint Cleanup at the Complex Level
     2 - Enable Checkpoint Cleanup at Unit Level
     3 - Disable at the Unit Level
     4 - Disable at the Complex Level