It is possible to get a virtual database (VDB) status from the CLI.
Log into the CLI as any user that has privileges on the VDB.
From source go to the VDB you want to get a status on.
delphix > source delphix source > ls delphix source > select <yourvdb>
Run the get runtime command to see all information or just get runtime.status for if the VDB is running.
delphix source 'vdb' > get runtime
delphix source 'vdb' > get runtime.status
If you would like to see more than one VDBs status you can also do the following:
delphix > source delphix source > list display=name,runtime.status