Memorex LOCK - VERSION 2-24 Informacje Techniczne Pobierz pdf (Strona 286)

100

101

Multi-Dataset Processing

7-18 User Reference

Use Pursuant to Company Instructions

 You must prevent the tape from being rewound for all datasets

except the last. This can be accomplished with any of the

following methods:

 Option 3 in a TLBL statement

 VOL=(,RETAIN) in a DD statement

 OPT=NOREW in a DD statement

 You may want to specify a rewind or unload option code for the

last dataset. This can be accomplished by any of the following

methods:

 Option 1 (rewind) in a TLBL statement

 FREE=CLOSE (rewind) in a DD statement

 Option “2” (unload) in a TLBL statement or

 VOL=(PRIVATE) (unload) in a DD statement

 You can prevent the release of the assignment for each dataset

except the last. This can be accomplished with either of the

following methods:

 Option 8 in a TLBL statement

 FREE=END in a DD statement

 You usually want the assignment to be released at close for the

last dataset. This can be accomplished by omitting the option

code (TLBL) or FREE=END (DD).

 On output, BIM-EPIC continues to write new datasets at the end

of the current multi-dataset group. When you want to create a

new group, you must start by creating a new version of the prime

dataset.

 You can process the datasets in any order on input. Because of

the physical limitations of tape media, it is most efficient to

process the datasets in ascending order by file sequence, but this

is not mandatory.

 You must use DD statements to automatically catalog a

subdataset.

WARNING:

If the length of the prime dataset name is 17 characters or less,

BIM-EPIC enters the prime dataset name in the Comment field of

the subdataset definition. If the prime dataset name in the

comment field is longer than 17 characters, BIM-EPIC puts

XXXXXXXXXXXXXXXXX in the Comment field for the subdataset.

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