Enabling ABARS ABACKUP and ARECOVER to wait for a tape unit allocation

When ABARS processing backs up or recovers an aggregate, a tape unit is requested by ABARS and allocated by MVS™. If a request for a tape unit cannot be satisfied (because all tape units are presently in use), the ABACKUP or ARECOVER processing fails.

For all other DFSMShsm processing that uses tape units, a WAITor NOWAIT option can be specified with the SETSYS INPUTTAPEALLOCATION and SETSYS OUTPUTTAPEALLOCATION commands. ABARS processing, however, runs in its own address space and is not effected by the SETSYS commands.

To enable the operator to specify whether to wait for an available tape unit, you must issue a PATCH command.

Issue the following PATCH command if you want the operator to specify whether to wait for tape unit allocation for ABACKUP processing:

PATCH .ABRCB.+81 BITS(...1....)         /* Allow the operator to specify */
                                        /* the WAIT option for ABACKUP   */
                                        /* processing.                   */

Issue the following PATCH command if you want the operator to specify whether to wait for tape unit allocation for ARECOVER processing:

PATCH .ABRCB.+81 BITS(....1...)         /* Allow the operator to specify */
                                        /* the WAIT option for ARECOVER  */
                                        /* processing.                   */