DBCTL enables you
to use the following IMS™ log utilities:
- The log archive utility, DFSUARC0 produces a system log data set (SLDS) from
a filled OLDS. DBCTL can automatically invoke DFSUARC0 to archive the OLDS
when an OLDS switch occurs. You use the ARC= parameter in the DBC procedure
to control automatic archiving. (See the IMS System Definition Reference manual manual or IMS Installation Volume 2: System Definition and Tailoring for further guidance on specifying ARC, and the IMS Utilities Reference: Database manual manual for guidance on setting up the skeleton JCL needed.)
Alternatively, you can use the DBRC command GENJCL.ARCHIVE to initiate manually
an archive if you did not specify the automatic archive option, or if an automatic
archive fails. See the IMS Operations Guide for further guidance about automatic
archiving. The log archive utility runs as a batch job, and you can run multiple
log archive jobs concurrently. The SLDS it creates may be on DASD, MSS, or
tape. DFSUARC0 is the recommended utility for archiving logs in a CICS-IMS
environment.
- The log recovery utility, DFSULTR0 produces a usable log data set from one
that contains read errors or could not be closed properly. You can recover
both system log data sets (SLDSs) and online log data sets (OLDSs) with this
utility.
- The file select and print formatting utility, DFSERA10 enables you to display and examine data
from the IMS log data set in the following ways:
- Print or copy a whole log data set
- Print or copy from multiple log data sets based on control statement input
- Select and print log records according to their sequential position in
the data set
- Select and print log records based upon data contained within the record
itself, such as the contents of a time, date or identification field
- Enable your exit routines to do special processing on selected log records.
See the IMS Utilities Reference: Database manual manual for further guidance on
using these utilities.
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