This batch backout data set statistics report contains
information about the type of updates for that were backed out from
each VSAM data set. This report is repeated for every VSAM sphere
that CICS® VR batch backout processing updated.
The following information is provided:
- Job name
- Name of job that performed the updates that CICS VR
backed out.
- Job ID
- JES job ID of the job that performed the updates that CICS VR
backed out.
- Base name of backed out data set
- The name of the VSAM base cluster that CICS VR
applied the log records to.
- Base name of original data set
- The name of the VSAM base cluster that the batch job initially
updated.
- First and last log records applied
- The time-stamps of the latest and the earliest before-image log
records that were applied to the VSAM data set. The dates and times
are taken from the before-image. Time type identifies the time format
of the dates and times listed.
Note: CICS VR
batch backout processing reads the undo log stream from youngest
to oldest.
- Job step name
- Names of the steps in the batch job that performed the updates
that CICS VR backed out.
- Number of before image log records
- For each VSAM data set, the total number of log records found
on the undo log stream that relate to the VSAM data set for the specified
job step.
If CICS VR batch backout terminated
with an error, these statistics might not match the number of records
shown in the Batch Backout Job Step Statistics report.
The
following types of log records listed in the NUMBER OF RECORDS field
causes one of the matching actions to occur during batch backout processing:
Type of log record |
Action performed against the VSAM data set |
UPD-BEFORE |
UPDATES
ADDS
|
ADD-BEFORE |
DELETES |
For example, if CICS VR finds an ADD-BEFORE log
record during batch backout processing, this indicates that a VSAM
sphere record was added by a batch application. Therefore, this causes CICS VR
to perform a DELETE of the actual VSAM record.
If CICS VR
finds an UPD-BEFORE log record during batch backout processing, this
indicates that either a VSAM sphere record was updated or deleted
by a batch application. Therefore, this causes CICS VR
batch backout to perform either an ADD or UPDATE to the actual
VSAM sphere.
- Number of changed VSAM records
- Indicates the number of each type of action CICS VR
performed against the VSAM sphere during batch backout processing.
Note: The TOTAL row summarizes the number of before-image log records
and changed VSAM records for the corresponding VSAM data set. The
OVERALL TOTAL row summarizes the number of before-image log records
and changed VSAM records for all of the VSAM data sets that were backed
out.
- Changes ignored by exit
- The number of before-images that were ignored due to the action
code returned from the CICS VR batch backout ESDS delete
exit.