A.All pluggable databases are automatically upgraded as part of a container database upgrade.

B.Multiple databases with the same ORACLE_HOME can be upgraded simultaneously.

C.A whole database backup must exist before upgrade

D.DBUA must be launched from the target Oracle Home.

E.The Pre-Upgrade Information Tool script is executed by DBUA.

F.The database must be opened in read-only mode.

A.Index balanced B*Tree height is considered when evaluating the cost of using an index.

B.The Statistics Advisor can help recommend the best way to gather statistics.

C.The number of table rows is considered when evaluating the cost of accessing a table using an index.

D.Statistics collected using DBMS_STATS always yield the best optimizer result.

E.The Statistics Advisor generates actions for all recommendations.

A.PDB2 is guaranteed at least 25% of the available parallel execution processes if there is enough demand.

B.PDB1 is always limited to 40% of the available system resources regardless of demand.

C.PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.

D.Any PDB not specified in the plan will be unable to execute statements in parallel.

E.PDB3 can use all available parallel execution processes at times.

F.Any PDB not specified in the plan will be able to use a maximum of 16.5% of the available system resources.

A.The undo tablespace clause is always required when no connection exists to the target instance.

B.RMAN SBT-based backups of the database to be duplicated can be used by the auxiliary instance.

C.The undo tablespace clause is always required when no connection exists to the recovery catalog and the target database is closed.

D.RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.

E.RMAN "pushes" the backups of the database to be duplicated over the network to the auxiliary instance.

A.spfile backups can be created while connected to an application root PDB.

B.The backup database plus archivelog command will back up archive logs when RMAN is connected to a PDB.

C.Tablespaces from different PDBs with identical names must be backed up by connecting RMAN separately to each PDB to back up the tablespaces.

D.The backup database command will create a pluggable database (PDB) backup when RMAN is connected to a PDB.

E.The backup pluggable database command can be used to back up cdb$root.