单选题Flashback is enabled for your multitenant container database (CDB), which contains two pluggable database (PDBs). A local user was accidently dropped from one of the PDBs. You want to flash back the PDB to the time before the local user was dropped. Yo

A. Schema objects owned by the C# # A_ADMIN common user can be shared across all PDBs.

B. The C # # A_ADMIN user will be able to use the TEMP_TS temporary tablespace only in root.

C. The command will, create a common user whose description is contained in the root and each pdb.

D. The schema for the common user C # # A_ADMIN can be different in each container.

E. The command will create a user in the root container only because the container clause is not used

A. The root container can be flashed back without flashing back the pluggable databases (PDBs).

B. To enable flashback database, the CDB must be mounted.

C. Individual PDBs can be flashed back without flashing back the entire cdb.

D. The DB_FLASHBACK RETENTION_TARGET parameter must be set to enable flashback of the cdb.

E. A CDB can be flashed back specifying the desired target point in time or an SCN, but not a restore point.

A. System privileges apply only to the PDB in which they are used.

B. Local users cannot use local system privileges on the schema of a common user.

C. The granter of system privileges must possess the set container privilege.

D. Common users connected to a PDB can exercise privileges across other PDBs.

E. System privileges with the with grant option container all clause must be granted to a common user before the common user can grant privileges to other users.

Your multitenant container database (CDB) contains three pluggable database (PDBs). You find that the control file is damaged. You plan to use RMAN to recover the control file. There are no startup triggers associated with the PDBs.Which three steps should you perform to recover the control file and make the database fully operational?（）

A. Mount the container database (CDB) and restore the control file from the control file auto backup.

B. Recover and open the CDB in NORMAL mode.

C. Mount the CDB and then recover and open the database, with the RESETLOGS option.

D. Open all the pluggable databases.

E. Recover each pluggable database.

F. Start the database instance in the nomount stage and restore the control file from control file auto backup.

Your multitenant container database (CDB) contains a pluggable database, HR_PDB. The default permanent tablespace in HR_PDB is USERDATA. The container database (CDB) is open and you connect RMAN.You want to issue the following RMAN command:RMAN > BACKUP TABLESPACE hr_pdb:userdata;Which task should you perform before issuing the command?（）

A. Place the root container in ARHCHIVELOG mode.

B. Take the user data tablespace offline.

C. Place the root container in the nomount stage.

D. Ensure that HR_PDB is open.

A. The PDB must be open in read-only mode.

B. The PDB must be in mount state.

C. The PDB must be unplugged.

D. The PDB data files are always removed from disk.

E. A dropped PDB can never be plugged back into a multitenant container database (CDB).

A. The C # # ROLE1 role is created in the root database and all the PDBs.

B. The C # # ROLE1 role is created only in the root database because the container clause is not used.

C. Privileges are granted to the C##A_ADMIN user only in the root database.

D. Privileges are granted to the C##A_ADMIN user in the root database and all PDBs.

E. The statement for granting a role to a user fails because the CONTAINER clause is not used.

Your multitenant container database (CDB) is running in ARCHIVELOG mode. You connect to the CDB RMAN.Examine the following command and its output:You execute the following command:RMAN > BACKUP DATABASE PLUS ARCHIVELOG;Which data files will be backed up?（）

A. Data files that belong to only the root container

B. Data files that belong to the root container and all the pluggable databases (PDBs)

C. Data files that belong to only the root container and PDB$SEED

D. Data files that belong to the root container and all the PDBs excluding PDB$SEED