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CDAM control parameters are used to control the functions performed by the CDAM subsystem. There are two types of control parameters:
Allocation Parameters
When Control-D allocates a CDAM dataset, it uses dataset allocation control parameters (such as PREFIX, BLOCK, UNIT, EAVUSE).
Below is an example of allocation parameter override in a SUBSYS statement.
Example - Allocation Parameters in a SUBSYS Statement
//DDNAME DD SUBSYS=(CDAM,'PREFIX=GL10,UNIT=PROD')
In the above example, the CDAM dataset is created with a prefix of GL10, which overrides the default prefix specified in member CTDPARM. The CDAM dataset will be allocated on the PROD units, again overriding the default value specified.
Retrieval Parameters
Retrieval control parameters are used to specify retrieval information for CDAM datasets, that is, which CDAM you want to decollate. The parameters enable you to retrieve exactly the CDAM file or files you want to decollate.
Retrieval parameter overrides can be specified in the decollating mission parameters using the DSN and ON DSN fields. The types of parameters you can specify include JOBNAME, DDNAME, PGMSTEP. An example is shown below.
Example - Retrieval Parameters in a Decollating Mission (in an ON DSN Statement)
WHEN IN QUEUE N CLS TIME FROM UNTIL INTERVAL PRIORITY
DSN LAST=YES
===========================================================================
OUT
SHOUT WHEN TO URG
MSG
===========================================================================
DEF COPIES 01 LVL 95 USER UNIDENT DEST MAX COPIES
===========================================================================
ON DSN = PGMSTEP=STEP1,DDNAME=SYSUT2
PRT COPIES LVL USER DEST MAX COPIES
PRINT/CDAM PARMS =
WHEN LINE - COL - PRINT REF NXT CT AND/OR
STRING =
DO
Note: You should now update all relevant report decollating mission definitions with the appropriate CDAM retrieval parameters.
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