Message Types › OPEN and CLOSE Messages

OPEN and CLOSE Messages

To help the operator identify work tapes (such as sort work files), the creation of any temporary data set on a CA 1 controlled tape causes two messages to go to the console. At both OPEN and CLOSE, the operator receives the drive and volume serial number of the work files.

The OPEN message also includes the job name, ddname, expiration date, and data set name. The CLOSE message includes the comment WORK TAPE (or WORK FILE, for a secondary data set). Once work tapes are demounted, the operator can place them back in the scratch pool.