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.