Impact to using the DFSMS Media Manager

Products

• Disk Backup and Restore - MVS
• DISK BACKUP AND RESTORE- ADD-ON OPTIO
• DISK BACKUP AND RESTORE

Issue/Introduction

IBM reported that;
Media Manager IO termination module, ICYPGAD, may touch storage in the MMIB after calling the user's DIE exit.
This may cause a program check and then S0C4 abend occur if the user has asynchronously closed or disconnected the data set.
And IBM APAR OA54289 (PTF UA94418, UA94419, UA94417) is provided as a solution to this problem.
OA54289: ABEND0C4 IN ICYPGAD

Does Disk Backup and Restore use the DFSMS Media Manager?

Environment

Release: Disk Backup and Restore 12.5

Resolution

The DFSMS Media Manager is not impacting Disk Backup and Restore.
The only reason that these IBM ptfs can impact Disk Backup and Restore is if Disk Backup and Restore hook is to be modified. In such case, as you have applied Usermods, then SMP7E will tell them that the usermod needs to be restored. 

Disk Backup and Restore should not be impacted by these IBM ptfs.