
Pre-Open Processing (TSIDASS)
Chapter 8. BIM-EPIC Utilities 8-3
To make the assignment to a system logical unit, you must supply a dataset label for the
dtfname IJSYSIN, IJSYSLS, or IJSYSPH. If a SYSPCH or SYSLST dataset is created on
tape, you must place it in closed status before you can use it as input. Use the CLOSE
function of TSIDMNT to close the dataset after it is created.
To simplify the JCL necessary to process system files (SYSIPT, SYSLIST and SYSPCH), use
the Generic Device Indepndence for Unit Record Devices (GDIUR) feature. The GDIUR
feature eliminates the need for extra TSIDASS execution, VSE CLOSE statements and most
of the TSIDMNT CLOSE function executions. GDIUR also protects your default system file
assignments in case the job terminates abnormally. Refer to "Choosing the Device Type" in
Chapter 7, "Running Jobs With BIM-EPIC" for additional information about using GDIUR.
[//] ASSGN SYS
xxx
[]
,DUMMY
// JOB MAKE ASSIGNMENT WITH TSIDASS
// TLBL TAPIN1,'DAILY.TRANS',,,,,,64
// TLBL TAPOUT,'DAILY.BILLING',,,,,,64
// EXEC TSIDASS
ASSGN SYS021
ASSGN SYS022
/*
// EXEC BILLING
/&
In this example, the program BILLING uses SYS021 for TAPIN1 and SYS022 for TAPOUT.
TSIDASS makes the assignment for both of these files before the BILLING program is
executed. The TLBL option code 64 inhibits LUB allocation.
Use TSIDASS OPEN when you process controlled datasets with a program that does not issue
OPEN requests. TSIDASS OPEN issues a logical open for the dataset, so that BIM-EPIC can
gain control of the dataset.
OPEN
dtfname
,SYS
xxx
,
type
Parameter Required? Valid Entry Default
dtfname
Yes 1 to 7 characters None
xxx
Yes 000-254 None
type
Yes INPUT or OUTPUT None
dtfname identifies the dataset to be opened. Specify the dtfname or ddname as it appears on
the dataset's label statement.
SYSxxx specifies the logical unit to assign.
Syntax
Example
OPEN Statements
Syntax
Parameters
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