Oracle Database 19c 1z0-083 Full Course Free

After the change, only a common user with the required privilege can create an undo tablespace in CDB&ROOT.

Any new PDB and existing PDBs are automatically configured to use the default undo tablespace in CDB$ROOT.

After the change, only one undo tablespace can exist in CDB$ROOT.

After the change, any user with the required privilege can create an undo tablespace in the PDBs.

Undo tablespaces existing in PDBs must be dropped before the change.

After the change, each existing PDB has to be reopened for the new undo mode to take effect.

FLASHBACK QUERY can retrieve REDO records from ONLINE and ARCHIVE D REDO LOG files.

FLASHBACK VERSION QUERY can retrieve REDO records from ONLINE and ARCHIVE D REDO LOG files.

FLASHBACK TABLE can undrop a column.

FLASHBACK DROP can undrop an index when undropping a table.

After a database is restored from flashback logs using the FLASHBACK DATABASE command, it is sometimes rolled forward using redo logs.

They are generated if STATISTICS_LEVEL is set to TYPICAL.

They are always created manually.

They are always created automatically.

They are generated if STATISTICS_LEVEL is set to BASIC.

They are generated if STATISTICS_LEVEL is set to ALL.

They can be retained forever.

It can be created only by using RMAN.

It always includes all data files, the current control file, the server parameter file, and archived redo logs.

It can be consistent.

It is the only possible backup type for a database in NOARCHIVELOG mode.

It can consist of either backup sets or image copies.

It can be inconsistent.