Examine the commands executed in CDB$ROOT of your multitenant container database (CDB) that has multiple pluggable databases (PDB):

Which statement is true about granting the select privilege on the DBA_users view to the c##ROLE1 role?

Which three statements are true about a job chain?

Your multitenant container database (CDB) cdb1 that is running in archivelog mode contains two pluggable databases (PDBs), pdb2_1 and pdb2_2. RMAN is connected to the target database pdb2_1.
Examine the command executed to back up pdb2_1:
RMAN> BACKUP DATABASE PLUS ARCHIVELOG;
Which statement is true about the execution of this command?

View the Exhibit showing steps to create a database resource manager plan.
SQL>executedbms_resource_manager.create_pendingarea();
PL/SQLproceduresuccessfully completed.
3 QL>execdbms_resource_manager,create_consumergroup
( consumer_group=>'OLTP,,comment=>,onlineuser')
PL/SQLproceduresuccessfullycompleted.
SQL>execdbras_resource_raanager.create_plan
( plan=>'PRIU3ER3',comment=>'dssprio');
SQL>exec
Dbms_resource_manager.create_plan_directive
( plan=>'PRIU3ER3',group_or_subplan=>'OLTP',comraent=>'onlinegrp'CPU_Pl=>60); PL/3QLproceduresuccessfullycompleted.
After execting the steps in the exhibit you execute this procedure, which results in an error:
SQL> EXECUTEdbms_resource_manager. validate_pending_area ();
What is the reason for the error?

Which three statements are true regarding the use of the Database Migration Assistant for Unicode
(DMU)? (Choose three.)