Back up the TMC and Audit data set at least once a day. Tape activity can continue while the backup is being performed. The TMC is backed up first, then the Audit records created since the previous backup are written to tape. Retain this data for at least 6 to 12 months.
The following is a flowchart illustrating the Backing Up the TMC and the Audit Data Set:
The THAUDT parameter in the TMOOPTxx member of hlq.CTAPOPTN establishes the warning threshold limit on the number of Audit records written before the first IEFTMS9 TMC BACKUP REQUIRED, AUDIT FILE UTILIZATION IS CURRENTLY nn% warning message is issued. The limit is a percentage of the total number of formatted Audit records. The system default is 80 percent. CA 1 utilities (excluding TMSCOPY and TMSINIT,) abends with a U0008 code as soon as the Audit threshold is reached.
The warning message is issued to the operating system console at each percentile point as the percentage utilization increases until the Audit data set is backed up or full capacity is reached. If the TMC is not backed up before the Audit data set reaches capacity, CA 1 causes all jobs except TMSCOPY to abend (S7yy) when tape mounts are requested.
You may want to have the JCL for the execution of TMSCOPY available in SYS1.PROCLIB (or another procedure library available to the system START command). Your operators can immediately start a backup in the event the IEFTMS9 TMC BACKUP REQUIRED, AUDIT FILE UTILIZATION IS CURRENTLY nn% warning message appears on the system console.
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