VSAM Control Block options are specified using the CAIOPTS data set. These options control which VSAM Control Blocks are displayed on the Open Files report: ACB, AMB, AMBL, PLH, RPL, and VSAMIDX. The Data Management Control Blocks, including VSAM Control Blocks, for all open files in the job step optionally display.
Note: BLOCKS ON or OFF turns all VSAM control block options ON or OFF. For example, to display open ACBs and no other I/O control blocks specify the following:
BLOCKS OFF ACB ON.
No Data Management Control Blocks, except open ACBs, are displayed.
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