A keep message is sent for the tape volume. The tape volume is rewound and unloaded by OPEN or EOV processing and a mount message is sent for another tape volume. If the SELECTVOLUME option is SPECIFIC, and it is OPEN processing, DFSMShsm attempts to select another tape volume already defined to DFSMShsm. If there are three consecutive specific volumes mounted and rejected with an ARC0309I message, the operator receives a nonspecific (PRIVAT) mount request. If it is EOV processing, DFSMShsm attempts to select another tape volume already defined to DFSMShsm without regard to the number of rejections occurring with an ARC0309I message for this mount. If DFSMShsm is able to select another tape volume, the operator receives a specific mount request. If DFSMShsm is unable to select another tape volume or the SELECTVOLUME option is SCRATCH, the operator receives a nonspecific (PRIVAT) mount request. If the message indicates that WORM media is not valid for this function then the system will end OPEN processing.
The tape operator should respond to the specific mount request by mounting the requested tape volume on the requested tape drive.
The tape operator can respond to the nonspecific (PRIVAT) mount request by mounting a scratch tape or a tape volume already defined to DFSMShsm on the requested tape drive. If the tape operator mounts a scratch tape, the tape should not be RACF-protected by another user nor used previously for output by the DFSMShsm function issuing the message. If the tape operator mounts a tape volume already defined to DFSMShsm, the tape volume should not contain any valid DFSMShsm data (it should be empty) and should not be RACF-protected by another user. Also, the type of tape volume mounted (backup, migration, or dump) should be the same as the type of tape volume that encountered the EOV condition. To resolve a TTOC conflict, the tape operator can mount a tape volume with a compatible TTOC type.
The system programmer determines what valid DFSMShsm data already exists on the tape volume by entering the DFSMShsm space manager LIST command. For level 2 migration tape volumes and backup and SPILL tape volumes, issue the LIST command with the TTOC parameter. For dump volumes, issue the LIST command with the DUMPVOLUMES parameter.
If the message indicates the tape volume does not appear in one of DFSMShsm’s RACF tape volume sets, see z/OS DFSMShsm Implementation and Customization Guide topics "Authorizing and Protecting DFSMShsm Resources" and "Implementing DFSMShsm Tape Environments" for a description of how to add tape volumes to DFSMShsm’s RACF tape volume sets.
If the message indicates the dump classes are in conflict, use the DELVOL command with the UNASSIGN parameter for the dump volume so the volume can be used in any other dump class for subsequent dumps.
RLIST TAPEVOL volser ALL
The sender of the command must have a certain level of access authority to the resource depending on the information requested. For additional information, see z/OS Security Server RACF Command Language Reference.
DFSMShsm