By trying to increase the VolumeSize of our Virtual volumes in CA-Vtape, this failed with following message:
Release : 12.6
Component : CA VTAPE
The reason of the failure is that the VolumeSize parameter is not coded already into VTPOOLS.
Here is the procedure to follow.
1) Change the VTPOOLS, for example, as follow:
VolserRange = NXXXXX-NYYYYY
2) Restart Vtape without modifying the VTPOOLS value.
This will make Vtape to get the VRM set to 0005.
3) Once done, you can dynamically change the VolumeSize and perform the REFRESH=POOLS to get it activated.