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1Z0-083 · Question #3

1Z0-083 Question #3: Real Exam Question with Answer & Explanation

The correct answer is C. A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file G. A snapshot copy PDB can be created from a stand-alone clone PDB.. https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/cloning-a-pdb.html#GUID- F26C8A55-2465-475A-905A-83BD2E68AE6E and then create a SNAPSHOT COPY PDB from the standalone PDB. Storage requirements depend on the setting of the CLONEDB initialization parameter: The u

Question

Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)

Options

  • AA PDB snapshot is always a full copy of the source PDB.
  • BA PDB snapshot is always a sparse copy of the source PDB.
  • CA snapshot copy PDB depends on a storage snapshot which can only be stored on specific file
  • DA PDB snapshot depends on a storage snapshot which can be stored on any file system.
  • EA PDB snapshot depends on a storage snapshot which can only be stored on specific file
  • FA snapshot copy PDB depends on a storage snapshot which can be stored on any file system.
  • GA snapshot copy PDB can be created from a stand-alone clone PDB.

Explanation

https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/cloning-a-pdb.html#GUID- F26C8A55-2465-475A-905A-83BD2E68AE6E and then create a SNAPSHOT COPY PDB from the standalone PDB. Storage requirements depend on the setting of the CLONEDB initialization parameter: The underlying file system for the source PDB files must support storage snapshots. Such file systems include Oracle Automatic Storage Management Cluster File System (Oracle ACFS) and Direct NFS Client storage. Oracle Exadata supports snapshot copy functionality on ASM configured with sparse ASM grid disks. The underlying file system for the source PDB files can be any local file system, network file system (NFS), or clustered file system that has Direct NFS enabled and supports sparse files. Most UNIX systems meet these requirements, including Oracle ACFS and ZFS. However, when CLONEDB=TRUE, the source PDB must remain in open read-only mode when clones exist.

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