You execute the following RMAN command in the order shown below： BACKUP VALIDATE DATABASE； BLOCKRECOVER CORRUPTION LIST； What will these commands do？（）A、 Create a backup of the database and recover all corrupted blocks found in the backup.B、 Run a backup validation and list all the logically corrupt blocks as well as physically corrupt blocks in the database.C、 Run a backup validation to populate V$COPY_CORRUPTION view， and then list any corrupt blocks recorded in the view.D、 Run a backup validation to populate V$DATABASE_BLOCK_CORRUPTION view， and then repair any corrupt blocks recorded in the view.E、 Run a backup validation， repair any corrupt blocks found during the validation process， and then update V$DATABASE_BLOCK_CORRUPTION view to indicate which corrupt blocks have been repaired.
You execute the following RMAN command in the order shown below： BACKUP VALIDATE DATABASE； BLOCKRECOVER CORRUPTION LIST； What will these commands do？（）
- A、 Create a backup of the database and recover all corrupted blocks found in the backup.
- B、 Run a backup validation and list all the logically corrupt blocks as well as physically corrupt blocks in the database.
- C、 Run a backup validation to populate V$COPY_CORRUPTION view， and then list any corrupt blocks recorded in the view.
- D、 Run a backup validation to populate V$DATABASE_BLOCK_CORRUPTION view， and then repair any corrupt blocks recorded in the view.
- E、 Run a backup validation， repair any corrupt blocks found during the validation process， and then update V$DATABASE_BLOCK_CORRUPTION view to indicate which corrupt blocks have been repaired.
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单选题You want to purge job entries older than 5 days from the job log. You do not want to purge window log entries. Which command will you use to accomplish this task？（）A EXECUTE DBMS_SCHEDULER.PURGE_LOG（log_history = 5， job_name = ’JOB1’）；B EXECUTE DBMS_SCHEDULER.PURGE_LOG（ log_history = 5， job_name = ’JOB_LOG’）；C EXECUTE DBMS_SCHEDULER.PURGE_LOG（ log_history = 5， which_log = ’JOB1’）；D EXECUTE DBMS_SCHEDULER.PURGE_LOG（ log_history = 5， which_log =’JOB_LOG’）；
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单选题You execute this command in MOUNT mode： ALTER DATABASE ARCHIVELOG； Where is the information that the database is now in ARCHIVELOG mode stored？（）ASPFILEBarchive logCcontrol fileDsystem tablespace
单选题You have an SQL query that takes one minute to execute. You use the following code segment to execute the SQL query asynchronously.IAsyncResult ar = cmd.BeginExecuteReader（ ）;You need to execute a method named Do Work（ ） that takes one second to run while the SQL query is executing. DoWork（ ） must run as many times as possible while the SQL query is executing. Which code segment should you use? （）Awhile（ar.AsyncWaitHandle==null）{DoWork（）；}dr=cmd.EndExecuteReader（ar）；Bwhile（!ar.IsCompleted）{DoWork（）；}dr=cmd.EndExecuteReader（ar）；Cwhile（Thread.CurrentThread.ThreadState==ThreadState.Running）{DoWork（）；}dr=cmd.EndExecuteReader（ar）；Dwhile（!ar.AsyncWaitHandle.WaitOne（））{DoWork（）；}dr=cmd.EndExecuteReader（ar）；
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多选题Identify four uses of the Oracle Scheduler.（）Aenables Oracle database to schedule which processes execute on which processors in a multiple CPU environmentBenables Oracle database to do patches according to a DBA-defined scheduleCenables you to schedule the execution of jobs based on timeDenables you to execute jobs in a clustered environmentEenables you to periodically execute operating systemscript files located on the same server as the databaseFenables you to create a job that makes use of saved programs and schedulesGenables you to automate the management of the jobs that are created using the DBMS_JOB package
多选题You work as a database administrator for Certkiller .com. Your database is opened in NOARCHIVEKLOG mode. You decide to place the database in ARCHIVELOG mode. How would you do this？（）AExecute the ALTER DATABASE ARCHIVELOG statementBSelect ARCHIVELOG option in the database control and restart the database to apply the changes.CShut down and start the instance, and in the NOMOUNT state execute the ALTER DATABASE ARCHIVELOG statement.DShut down and start the instance, mount the database, then execute the ALTER DATABASE ARCHIVELOG statement.
单选题Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows Server 2012 R2. You create and enforce the default AppLocker executable rules. Users report that they can no longer execute a legacy application installed in the root of drive C. You need to ensure that the users can execute the legacy application. What should you do？（）AModify the action of the existing rulesBCreate a new rule.CAdd an exception to the existing rulesDDelete an existing rule