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:


Related topic

Working-with-batch-reports

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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