About this task

When the VIOS is not able to parse data out of its Configuration Management Database (CMDB) the HMC will get a message “Unable to connect to the Database Error occurred” when managing virtual networks or virtual storage on a managed system. This error will also be found in the scanner log.

For Troubleshooting reasons it is helpful to read the logs of a specific scanner 

see also 

Applies to

BVQ Version: any

Procedure

Check for properly configuring name resolution on VIOS ( check /etc/hosts and /etc/resolv.conf)

If this has already been done you might have to take additional measures stopping and starting VIOS daemons that are used to communicate with HMC. You can reboot the VIOS, but using a script to stop and start the VIOS as well as refresh the CMDB is recommended.

The link to the script and a "how to" which describes the solution steps in more detail can be found here:

When Using HMC GUI you see message "Unable to connect to the Database Error occurred "