Preparing for Installation › Storage Requirements › Permanent Data Sets › Log Data Sets

Log Data Sets

The log data sets contain physical sequential data sets, used to store SMF data that ICOM collects. The data sets contain records of certain events within CA WA CA 7 Edition and messages to CA WA CA 7 Edition. Two DASD data sets are allocated, and CA WA CA 7 Edition alternates their use automatically much like SMF data sets. The JOB parameter of the DBASE statement has more information.

Organization

Physical sequential.

DCB=(RECFM=VB,BLKSIZE=2104,LRECL=2100)

Note: BLKSIZE can be increased; however, CA WA CA 7 Edition only writes a maximum block of 2104 bytes.

Space Requirements

The amount of space that is required for log data sets depends on the following items:

• The number of jobs that are run under control of CA WA CA 7 Edition.
• The amount of data to record.
• The frequency of backups.

A maximum of two log data sets can exist. Suggested space allocation is at least ten cylinders per log data set. Allocate the space as contiguous.

DASD Restrictions

Both log data sets must reside on the same DASD volume. The log data set can reside on tape (in unblocked format) when available for permanent allocation to CA WA CA 7 Edition; however, we do not recommend this method.

Note: Maintenance of log files is through programs SASSHIS5 and SASSHIS6.