Memorex LOCK - VERSION 2-24 Informacje Techniczne Strona 317

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Using DITTO
User Reference
Connectivity Systems, Inc.—Copyright © 2006
Use Pursuant to Company Instructions
7-49
Using DITTO
Description You can use BIM-EPIC to control tape and sequential disk files logically
accessed by DITTO. However, DITTO requires excessive JCL
requirements. You can use TSIDDTD and TSIDDMP, which require
minimal JCL, for equivalent results. When card-image processing is
required, use your sort program if your sort program supports card-image
processing or IDCAMS REPRO.
\DSN Catalog Only prime dataset definitions are allowed. Therefore, multi-dataset tape
groups are specifically disallowed.
JCL
Requirements
for Tape
When using tape, there are several JCL requirements to consider.
Each controlled dataset must be defined with a TLBL statement
or DD statement.
LUB allocation must be inhibited since DITTO requires the SYS
number(s) specified in the DITTO control statement.
The input volume and output volumes must be allocated before
DITTO is invoked and then repositioned back to load point. Use
the TSIDASS OPEN function to allocate the volumes.
Configuration Option EPS022 must be set if BIM-EPIC
reblocking options are invoked.
Configuration Option EPS029 must be set to prevent BIM-EPIC
from clearing the dataset name from the input label statements.
JCL
Requirements
for Disk
When using disk, there are two JCL requirements you must consider.
Each controlled dataset must be defined with a DLBL statement
or DD statement.
As described above, input and output datasets must be allocated
before DITTO is invoked.
Restrictions BIM-EPIC can only control datasets used by the DITTO tape file
functions and disk file functions, also called Sequential or SAM. Files
used by the DITTO basic tape functions and basic disk functions cannot
be controlled by BIM-EPIC since those functions do not use logical
IOCS.
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