1Z0-053 题目列表
单选题Given the script create script db_backup_datafile_script {backup datafile and 1， and2 plus archivelog delete input；} Run {execute script db_backup_datafile_script using 2；} What is the result of running this command？（）A The script will fail since you instructed RMAN to back up only one datafile rather than twoB The script will successfully back up datafile 3 without errorC The script will fail since it uses a substitution variable which is not supportedD The execute script command will prompt for the value of and2 since it’s not included in the commandE The script will fail because you cannot use the plus archivelog command when backing up
单选题When tuning Automatic PGA Memory Management， which of the following views will provide the information specified？（）A The V$PGA_TARGET_ADVICE view shows the predicted cache hit-ratio improvement if you increase PGA_AGGREGATE_TARGETB The V$PGA_TARGET_ADVICE view shows how the V$SQL_WORKAREA histogram will change if you change the value of PGA_AGGREGATE_TARGETC The V$PGA_TARGET_ADVICE_HISTOGRAM view shows how the V$SQL_WORKAREA_HISTOGRAM will change if you switch between Manual and Automatic PGA Memory ManagementD The V$PGA_TARGET_ADVICE view shows how performance will improve for the different work areas if you switch from Manual to Automatic PGA Memory Management
单选题Your database is in ARCHIVELOG mode. You have two online redo log groups, each of which contains one redo member. When you attempt to start the database, you receive the following errors: ORA-00313: open failed for members of log group 1 of thread 1 ORA-00312: online log 1 thread 1: 'D:/REDO01.LOG' You discover that the online redo log file of the current redo group is corrupted. Which statement should you use to resolve this issue?（）AALTER DATABASE DROP LOGFILE GROUP 1;BALTER DATABASE CLEAR LOGFILE GROUP 1;CALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1;DALTER DATABASE DROP LOGFILE MEMBER 'D:/REDO01.LOG
单选题View the following SQL statements： Transaction T1 INSERT INTO hr.regions VALUES （5，’Pole’）；COMMIT； Transaction T2 UPDATE hr.regions SET region_name=’Poles’ WHERE region_id = 5； COMMIT； Transaction T3 UPDATE hr.regions SET region_name=’North and South Poles’ WHERE region_id = 5； You want to back out transaction T2. Which option would you use？（）A It is possible，but transaction T3 also backs out.B It is possible with the NOCASCADE_FORCE option.C It is possible with the NONCONFLICT_ONLY option.D It is not possible because it has conflicts with transaction T3.
单选题When running the tablespace point-in-time command recover tablespace users until time ,,10/06/2008:22:42:00 auxiliary destination ,,c:/oracle/auxiliary; you receive the following error: RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of recover command at 10/08/2008 16:00:30 RMAN-20202: Tablespace not found in the recovery catalog RMAN-06019: could not translate tablespace name "USERS" What is the likely cause of the error?（）A The database is in ARCHIVELOG mode.B There is not a current backup of the database available.C The USERS tablespace has dependent objects in other tablespaces and can not be a part of a TSPITR alone.D The USERS tablespace is not eligible for TSPITR because it has invalid objects.E The recover tablespace command is incorrect and generates the error.
单选题Which statement about Automatic Memory Management with Oracle 11g is true?（）AYou cannot specify MEMORY_TARGET if you explicitly specify SGA_TARGET or PGA_AGGREGATE_TARGET values that are greater than zero in your parameter file.BOracle can reallocate memory between the SGA and PGA automatically as needed.CTo use Automatic Memory Management, you must explicitly set both the MEMORY_TARGET and MEMORY_MAX_TARGET parameters in your parameter file.DYou can set the MEMORY_TARGET parameter to a maximum value of the current SGA size plus the current PGA size
多选题Using the LIST command in Recovery Manager (RMAN), which two pieces of information in the RMANrepository can be listed?（） (Choose two.)Astored scripts in the recovery catalog.Bbackups that can be deleted from disk.Cbackup sets and image copies are obsolete.Dbackups that do not have the AVAILABLE status in the RMAN repository.
单选题Your database is running in ARCHIVELOG mode. You are performing a user-managed backup of the DATA1 tablespace. You place the DATA1 tablespace in backup mode by issuing the following statement: ALTER TABLESPACE data1 BEGIN BACKUP; While you are performing the backup, an error occurs that causes the instance to terminate abnormally. Which statement about the DATA1 tablespace is true?（）AThe DATA1 tablespace is automatically taken out of backup mode when the instance aborts.BIf you restart the database, the DATA1 tablespace will be automatically taken out of backup mode when the database is opened.CIf you restart the database, the DATA1 tablespace will be automatically taken out of backup mode when the database is mounted.DIf you restart the database, the database will not be opened.
单选题At the request of a user， you issue the following command to restore a dropped table： flashback table "BIN$F2JFfMq8Q5unbC0ceE9eJg==$0" to before drop； Later， the user notifies you that the data in the table seems to be very old and out of date. What might be the problem？（）A Because a proper range of SCNs was not specified， the wrong data was restored.B A proper range of timestamps was not specified， so the wrong data was restored.C A previous Flashback Drop operation had been performed， resulting in multiple versions of the table being stored in the Recycle Bin.D Either option A or B could be correct. Not enough information was provided to determine which.E None of the above.
多选题What information does the report schema command not provide？（）ASize of the datafilesBSize of the tempfilesCDate of last backup for datafiles and tempfilesDFilenames for each datafileECheckpoint SCN associated with the last RMAN backup
单选题Before a Flashback Table operation, you execute the following command: ALTER TABLE employees ENABLE ROW MOVEMENT; Why would you need this to be executed?（）ABecause row IDs may change during the flashback operationBBecause the object number changes after the flashback operationCBecause the rows are retrieved from the recycle bin during the flashback operationDBecause the table is moved forward and back to a temporary during the flashback operation
单选题You issue the following command： RMANCONFIGURE BACKUP OPTIMIZATION ON； What is the result of this command on your backups？（）A An incremental backup strategy will be used automatically.B Read-only datafiles will not be backed up as long as backups of those files already exist and those backups meet established retention criteria.C RMAN will configure itself for maximum performance at the cost of CPU.D RMAN will configure itself for minimal OS/CPU impact at the cost of time to back up the database.E RMAN will automatically compress backups.
多选题You executed the following command to drop a user： DROP USER scott CASCADE； Which two statements regarding the above command are correct？（）AAll the objects of scott are moved to the Recycle Bin.BAny objects in the Recycle Bin belonging to scott are purged.CAll the objects owned by scott are permanently dropped from the database.DAll the objects of scott in the Recycle Bin must be purged before executing the DROP command.EAny objects in the Recycle Bin belonging to scott will not be affected by the above DROP command.
单选题What is the correct order of steps to perform an online database backup？（） a. alter database begin backup b. alter database end backup c. Back up the database datafiles d. Back up the archive log files e. alter system switch logfileAa， b， c， d， eBe， d， a， b， cCa， c， b， d， eDd， b， c， a， eEa， c， b， e， d
单选题A shoot-out has erupted between your MS development teams using .NET and your Linux development teams using Java. Knowing that your database is in danger，which command would you use to back up your NOARCHIVELOG mode database using RMAN with compression？（）A backup database allB backup compressed databaseC backup as compressed backupset databaseD backup as compressed backup database plus archivelog allE backup as compressed backupset database plus compress archivelog all