Allocate: //VDSBYPAS and Tape datasets

Products

• Allocate DASD Space and Placement

Issue/Introduction

It can happen that, despite the 

//VDSBYPAS DD DUMMY 

card is coded in the jcl, Allocate is not bypassed when Tape datasets are managed instead of DASD datasets. 

How to fix this behavior.

 

Environment

Release : 12.5

Resolution

It is documented in the Allocate User’s Guide that the

//VDSBYPAS DD DUMMY 

is not recognized in the “ACS” environment. So it is necessary to use some other criteria to bypass the processing, and then exit with an EXIT CODE(0) statement, if the bypass should take place in the ACS environment.

Otherwise it is possible to set the SYSPARMS parameter PLSACS to N and this will completely disable the ACS environment.

Additional Information

Here the references in the Allocate documentation: 

Bypassing Allocations

PLSACS