Hello Felix,
Below is additional information I found on the GSVX340E message by issuing the HELP GSVX340E command within SYSVIEW:
GSVX340E Unable to connect to the data store <name>
The command entered is trying to connect to the data collection data store.
Possible problems:
* Data collection is not active.
Resolution: Start the main data collection address space.
* Data collection was started after logging on to the online interface.
Resolution: Logoff and log back on to connect.
Let me know if this information is helpful and if I can be of additional assistance in this matter.
Thanks,
Neil Kitzmiller - CA SYSVIEW Performance Management