Using the Application Checkpoint report
The Application Checkpoint report provides information about basic and extended checkpoints that are issued by batch message processing (BMP) programs.
This section contains the following topics:
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The following example shows an Application Checkpoint report.
2010-021 Log Analyzer for IMS V1.2.02.00 Page 1
Checkpoint Report (APPCHECK) R=9
LOG time span: FROM 2008-217 07:18:38.50 TO 2008-217 08:05:17.29 DURATION 00:46:38
JOB CHECKPOINT FREQUENCY
JOB----- PSB----- LUOW#-- #CHKPTS/TYPE DURATION /MIN /SEC --------Exceptions--------
FSTB0810 FSTA1155 0056587 00:00:00 *** No Checkpoints
FSTB0811 FSTA1150 0062654 30 SYMBOLIC 00:00:04 7.50 *** More than 1 chkp / sec
FSTB0812 FSTA1155 0073508 00:00:00 *** No Checkpoints
DCSB0PIP DCSA0PIP 0316499 5 SIMPLE 00:00:03 1.66 *** More than 1 chkp / sec
DAPBA21J DAPAU110 0338932 1048 SYMBOLIC 00:00:10 104.80 *** More than 1 chkp / sec
FSTBW28B FSTA1160 0406268 126 SYMBOLIC 00:00:10 12.60 *** More than 1 chkp / sec
FSTBW28A FSTA1160 0407253 126 SYMBOLIC 00:00:09 14.00 *** More than 1 chkp / sec
Application checkpoints indicate the completion of a unit of work. When a BMP issues a checkpoint, participating systems commit changes to the records that the BMP has updated. Committing the changes releases the locks on the updated records, making those records available for use by other programs. Tuning the frequency of checkpoints helps to ensure optimum data availability, application performance, and resource usage.
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