How to Delete a virtual database (VDB) if ORACLE_SID and ORACLE_HOME Already Reused (KBA1644)

Procedure

Shut down the physical source database normally
Delete the virtual database (VDB)
1. Go to Manage > My Databases
2. Select the VDB you want to delete and use the trashcan icon to delete
Start up the physical database like normal

Note: if you do not shut down the physical database and try and remove the VDB, the Delphix Engine will verify the mount point which will disrupt the new VDB.