Verifying the Open SVC Zaps work

Products

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

Issue/Introduction

How to verify if the Usermods / the Disk Open SVC Zaps have been installed correctly and are working ?

Resolution

Check the Modbit before and after a Disk BACKUP:  

1) Create or select a sequential data set and change it.
2) Check if the Modbit is ON in the F1 DSCB for this data set.
3) Run a Disk BACKUP of this data set.
4) Check the Modbit again: 
     - It should be OFF if the Usermods / the Disk Open SVC Zaps have been installed correctly.
     - It would be ON if the Usermods / the Disk Open SVC Zaps have not been installed.

 

Use a IEHLIST LISTVTOC to check the Modbit. Sample JCL: 

Check that the F1 DSCB field DS1DSIND (Data set indicators) at offset +93 is "2" before the BACKUP (MODBIT is ON) and "0" if the MODBIT is OFF after the BACKUP .