In a multitenant architecture, I have taken backups for PDB's in different timings, Suppose PDB1 at
1) How the restoration works for all the PDB's if the CDB crashes at a later time ?
2) If I am taking a storage snapshots for each PDB (Each PDB datafiles are located on different storage mounts - Snapshot enabled), Do I need to take a CDB Control file backup at each PDB Backup ??