Assume your situation can be described as follows：
x A full backup taken using RMAN is available on disk. 
x The current control files were NOT damaged and do not need to be restored. 
x All data files are damaged or lost. 
x The database is in NOARCHIVELOG mode. 
Which RMAN command would be most appropriate to use in line 3 of the following RMAN command set to restore and fully recover your database？（）
1. RMAN> STARTUP MOUNT 
2. RMAN> RESTORE DATABASE; 
3. RMAN> （） 
4. RMAN> ALTER DATABASE OPEN; 

单项选择题YouwanttocreateanRMANrecoverycatalogintheRC01databasetohelpyoumanagethedatabasesnamedDB01andDB02.Youneedtocreatearecoverycatalogownerinwhichofyourdatabases？（）

A.RCO1 only.
B.DB01 only.
C.DB02 only.
D.DB01 and DB02 only.
E.DB01，DB02，and RC01.

单项选择题Thedatabaseisconfiguredforautomaticarchivelogging.Alongwiththeotherrequiredparameters，thisentryisintheinitializationfile：log_archive_dest2= SERVICE=standby_db1MANDATORYREOPEN=600 Fromwheredoesthedatabaseresolvestandby_db1？（）

A.control file
B.tnsnames.ora
C.data dictionary
D.initialization parameter file

单项选择题RMANautomaticallypropagateinformationaboutthedatabasestructure，archivedredologs，backupsets，anddatafilecopiesintotherecoverycatalogfromthetargetdatabase’scontrolfile.Thisinformationcanalsobepropagatedtothecatalogmanuallybyusingthe（）command.

A.LIST
B.SWITCH
C.VALIDATE
D.CONFIGURE
E.RESYNC CATALOG
F.UPGRADE CATALOG

多项选择题WhichthreefeaturesareprovidedbyRecoveryManagerandNOTprovidedbyuser-managedbackupandrecovery？（）

A.Online backups.
B.Skipping unused block. 
C.Partial database backups.
D.Incremental block-level backup.
E.Detection of corrupted blocks during backup.

多项选择题WhichtwoSQL*Loaderinstructionsareusedtoassemblelogicalrecords？（）

A.WHEN
B.INFILE
C.CONTINUEIF
D.CONCATENATE
E.TRAILING NULLCOLS