CA Dynam for VSE User Guide

Changing File Characteristics
Default: (WORK1,SYS001)
SYSxxx
Specifies an explicit logical unit. Use this option if using unit record simulation
when the program DTF is DTFDI.
Note that the logical unit specified in an EXTENT statement, if present, takes
precedence over the SYSxxx specified here. For CA Dynam/D users, the S
parameter on a DLBL statement will take precedence over any other logical
unit specification when Catalog management is invoked.
Default: The program defined logical unit, or the logical unit specified in the
EXTENT statements.
Examples
Recalculate the block size (BLKSZ=OPT).
// DLBL FILEA,'DISK-A',,SD,BLKSZ=OPT Release the assignment at close (RELEASE).
// DLBL FILEB,'DISK-B',,SD,FIOPT=(RELEASE)
// EXTENT SYS008,111111,1,0,1,100
Set the block size to 1210 bytes (BLKSZ=1210), verify the output (VERIFY),
and use SYS007 as the logical unit (SYS007).
// DLBL FISYSLS,'FILE-C',,SD,BLKSZ=1210,FIOPT=(VERIFY),SYS007
// EXTENT SYS007,111111,1,0,1,19
Cataloged Data Set Definitions
You may indicate sort key records and file independence options for data sets
in the CA Dynam Catalog. Use the DYNCAT ALTER and DEFINE commands. For
more information, see Maintaining the Catalog.
In order for CA Dynam/FI to use the cataloged data set information, you must
specify YES for these parameters:
• CATALOG(YES) in the DYNAM/FI option record to indicate that catalog
support is available for CA Dynam/FI
• DYNAMFI(YES) for the particular data set in the Catalog to indicate that CA
Dynam/FI may access the catalog information.
If either of these options is NO, the catalog information will neither be
accessed nor updated.
CA Dynam/FI overrides program DTF specifications with what it finds in the
Catalog. In turn, it overrides catalog definitions with FI options found on the
xLBL statement.
6–20 User Guide