The following LABEL parameters are available:
A temporary data set. If it is for the first file, the volume remains in scratch status after use.
Standard system Julian expiration date.
Standard MVS expiration date for DFP 2.3 or above.
Standard system retention period.
User Control EXPDT keyword that you can create. Specifies that a tape is held permanently.
Catalog Days Control EXPDT keyword plus minimum retention keyword. Specifies that a tape data set is held at least ddd days. Once ddd days has been met, the expiration date is changed to CATALOG and is protected as long as the data set is cataloged.
Nonresident EXPDT keyword. Specifies that the tape volume being processed is not under CA 1 control. See Nonresident Tapes.
Days Since Last Used Control EXPDT keyword. Specifies that a tape data set is held as long as it is used every ddd days, and ddd can be any value between 001 and 366. As long as a tape data set is being utilized at least as frequently as every ddd days, it is protected. When the data set is not used for ddd days, it becomes eligible for scratch. This is an excellent means of controlling tapes used for testing.
Catalog Control EXPDT keyword. Specifies that a tape data set is protected as long as it has an entry in the system catalog. As soon as CA 1 determines that the data set no longer has an entry in the system catalog, it becomes eligible for scratch. 99000 is frequently used for generation data groups.
Cycle Control EXPDT keyword. Specifies that ccc cycles of a data set are to be held. This retention is based entirely on the number of cycles to be maintained in the TMC. Cycle Control can be used for simple data sets and generation data groups. For GDGs, the number of tapes retained by CA 1 does not necessarily need to equal the number of system catalog entries. The definition of a CA 1 cycle is determined by CA 1 system options CDAY and CJOB.
Never scratch EXPDT keyword. Specifies that a tape is held permanently. Data sets held with this keyword cannot be recreated on the same tape; however, these data sets may have additional information MODed on. 99365 is often considered to be "manual" control, as these tapes cannot be scratched until the volume is manually expired.
Never scratch EXPDT keyword. Specifies that a tape is held permanently. The same rules apply as for 99365.
Note: If an expiration date supplied in the JCL is less than the system date, CA 1 arbitrarily sets the TMC EXPDT to STATS/001, which is treated as permanent retention. Manual intervention is required to reset the retention actually desired. If a temporary data set is specified but a retention or expiration date into the future is specified, the tape is not considered temporary by CA 1.
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