多选题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?()AMount the container database (CDB) and restore the control file from the control file auto backup.BRecover and open the CDB in NORMAL mode.CMount the CDB and then recover and open the database, with the RESETLOGS option.DOpen all the pluggable databases.ERecover each pluggable database.FStart the database instance in the nomount stage and restore the control file from control file auto backup.

多选题
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.


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单选题In your multitenant container database (CDB) with two pluggable database (PDBs). You want to create a new PDB by using SQL Developer. Which statement is true?()AThe CDB must be open.BThe CDB must be in the mount stage.CThe CDB must be in the nomount stage.DAlt existing PDBs must be closed.

多选题Which three statements are true concerning the multitenant architecture?()AEach pluggable database (PDB) has its own set of background processes.BA PDB can have a private temp tablespace.CPDBs can share the sysaux tablespace.DLog switches occur only at the multitenant container database (CDB) level.EDifferent PDBs can have different default block sizes.FPDBs share a common system tablespace.GInstance recovery is always performed at the CDB level.

多选题Identify two correct statements about multitenant architectures.()AMultitenant architecture can be deployed only in a Real Application Clusters (RAC) configuration.BMultiple pluggable databases (PDBs) share certain multitenant container database (CDB) resources.CMultiple CDBs share certain PDB resources.DMultiple non-RAC CDB instances can mount the same PDB as long as they are on the same server.EPatches are always applied at the CDB level.FA PDB can have a private undo tablespace.

多选题Which three statements are true concerning unplugging a pluggable database (PDB)?()AThe PDB must be open in read only mode.BThe PDB must be dosed.CThe unplugged PDB becomes a non-cdb.DThe unplugged PDB can be plugged into the same multitenant container database (CDB)EThe unplugged PDB can be plugged into another cdb.FThe PDB data files are automatically removed from disk.

多选题Which three statements are true about using flashback database in a multitenant container database(CDB)?()AThe root container can be flashed back without flashing back the pluggable databases (PDBs).BTo enable flashback database, the CDB must be mounted.CIndividual PDBs can be flashed back without flashing back the entire cdb.DThe DB_FLASHBACK RETENTION_TARGET parameter must be set to enable flashback of the cdb.EA CDB can be flashed back specifying the desired target point in time or an SCN, but not a restore point.

多选题You are planning the creation of a new multitenant container database (CDB) and want to store the ROOT and SEED container data files in separate directories. You plan to create the database using SQL statements. Which three techniques can you use to achieve this?()AUse Oracle Managed Files (OMF).BSpecify the SEED FILE_NAME_CONVERT clause.CSpecify the PDB_FILE_NAME_CONVERT initialization parameter.DSpecify the DB_FILE_NAMECONVERT initialization parameter.ESpecify all files in the CREATE DATABASE statement without using Oracle managed Files (OMF).