Override IMS DL/I JCL Variables

Use the JCL Variables dialog on the View Segments page to override endpoint defaults for a single PSB.

Common uses include adding a required database DD, selecting a different DFSDFIVP or PSB/DBD library, or switching ACB mode during an IMS transition.

Enter overrides as key/value DD rows and save. CoreIQ persists the settings per PSB and applies them automatically to subsequent reads. These overrides do not affect other PSBs or the endpoint-level configuration.

When the generated DLIBATCH job needs a different skeleton (extra steps, a different PROC, site-specific comments) rather than just different library names, use Custom JCL on the same page instead. That editor is available when the administrator has left Allow user JCL template edit enabled on the endpoint.

For DL/I concepts, PSB/PCB structure, SSA syntax, and generated JCL, use the IMS DL/I basics guide bundled with the CoreIQ instance.