Real-time Processing › Special Processing for Input

Special Processing for Input

Normal input processing under CA 1 consists of checking the data set name requested in the DD statement against the data set name recorded in the TMC and updating the TMC fields with last used information.

The following special input processing situations may occur:

• When the data set name in the TMC is set to HEXZEROS (the default), the actual data set name is stored in the TMC the first time a tape is read under CA 1.
• Another special processing situation arises for out-of-area tapes. Tapes can be checked out-of-area under CA 1 by inserting an OUTCODE in the TMC Volume record. This indicates the tape has been removed from the premises. If an out-of-area tape is used for input, it is assumed that the tape has been returned and it is automatically checked-in, unless the out-of-area code is assigned to the CA 1 Vault Management System and it has a slot number assigned.

  If a tape has been brought back from the vault, and a manual CHECKIN has been performed on the volume (OUTCODE= VMS), all volumes in the set that have been read are automatically checked-in during open processing. This allows the tapes to be sent back to the vault if they are still eligible. In addition, the CA 1 system option RV ensures the expiration date of the tapes returned from the vault do not expire before the vaulting system sends them back.

• If the tape was checked out-of-area during scratch processing, then read for input under CA 1 control, the tape is automatically checked in and the TMC record is updated with the new data set name and expiration date. The expiration date or retention period can be specified in the DD statement (even though the tape is being used as input).

  If no expiration date or retention period is specified, the CA 1 system option KEYTAP is used to assign the retention. This provides a reliable, simple means of controlling tapes created on systems which are not under CA 1 control, such as key-to-tape processing.

  Note: For more information, see the Administration Guide.