ABCs of z/OS System Programming Volume 3 - IBM Redbooks

7.32 Prepare for logging
Update CFRM policy to add list structures for use
by DFSMStvs
Update LOGR policy to add Coupling Facility
structures needed for all log streams
Define log streams for use by DFSMStvs as:
Undo log
Shunt log
Log of logs
Forward recovery logs
Update data sets with LOG(NONE/UNDO/ALL) and
LOGSTREAMID
Figure 7-41 Prepare for logging
Prepare for logging
You have to define log structures in two places: the Coupling Facility resource management
(CFRM) policy and the system logger LOGR policy. A policy is a couple data set.
Furthermore, you need to define log streams for the various kinds of logs used by DFSMStvs.
If a data set is forward recoverable, you also need to assign a log stream for forward recovery
to this data set.
Update the CFRM policy
The CFRM policy is used to divide Coupling Facility space into structures. The CFRM policy
enables you to define how MVS manages Coupling Facility resources. In 7.14, “Coupling
Facility structures for RLS sharing” on page 397, we describe how to define CF structures for
use be VSAM RLS. You need to run a similar job to either define a new CFRM policy or to
update an existing CFRM policy with the structures that are used by the logger.
A sample JCL you can use to define a new CFRM policy is shown in Figure 7-42 on
page 434.
Chapter 7. DFSMS Transactional VSAM Services 433