Increasing the Space in a VLS File

To expand the size of a VLS file or to move it to a different device or device type, carry out the following steps:

Make sure the VLS file is not being accessed:
In CICS-Shut down CICS. Under z/OS, you can deallocate the data set without shutting down CICS; however, you then need to reallocate the data set before you recycle CICS.

You also need to quiesce all CA Ideal batch activity.
Use the BACKUP function of VLSUTIL to create a backup (sequential) form of the VLS library.
Delete the old VLS library and reallocate it (using IEFBR14) with the appropriate characteristics. The VLS file can be allocated as part of the following RESTORE step. For information regarding VLSUTIL LIBFMT=F option to format larger data sets, see the CA IPC Implementation Guide.
Run VLSUTIL again with the backup (sequential) file as input (VLSBKUP), including the following two control cards:
```
FORMAT NAMELEN=nn,BLKSIZE=bbbb 
RESTORE
```
Restart CICS.