Memorex LOCK - VERSION 2-24 Información técnica Pagina 307

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Sorting with BIM-EPIC
User Reference
Connectivity Systems, Inc.—Copyright © 2006
Use Pursuant to Company Instructions
7-39
Sort Programs
Sorting with BIM-EPIC
Description This section describes the considerations necessary to use BIM-EPIC
controlled datasets with sort programs. Specifically, this section covers
the following sort programs:
SYNCSORT using BIM-EPIC Interface
IBM SORT beginning with DFSORT 3.3
CA-SORT
All sort programs check the assignment of a particular logical unit
number (SYSnnn) before actually opening a particular file. This process
is known as pre-open checking and uses Physical Input Output Control
Systems (PIOCS) to open, close, read, and write the datasets. Therefore,
when using some sort programs, special considerations may be necessary
when accessing BIM-EPIC controlled datasets. These considerations fall
into three categories:
Satisfying pre-open checking
Acquisition of necessary DTF information
Deletion of the SORTWK dataset(s)
Pre-open checking can be satisfied using JCL considerations. BIM-EPIC
automatically deletes controlled SORTWK datasets at the end of a job.
DTF information not supplied by the sort program either is lost or must be
acquired by other means.
Using the Sort Interface (TSIDSRT)
Description The BIM-EPIC sort interface program, TSIDSRT, addresses all the
considerations described in the previous section. In addition, under
normal conditions, TSIDSRT does not require any JCL changes, except
the phase name on the EXEC statement. TSIDSRT performs the
following functions:
Reads the sort control statements and modifies the input
BLKSIZE to match the block size in the BIM-EPIC Catalog
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