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【单选题】

You are tuning RMAN to optimize performance.You want tape I/O to be asynchronous when you perform tape backups. Which action should you take?（）

A、Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE

B、Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE

C、Use compression when performing tape backups

D、Configure multiple SBT channels

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更多“You are tuning RMAN to optimize performance.You want tape I/O to be asynchronous when you perform tape backups. Which action should you take?（）”相关的问题
第1题
[单选题] You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups.Which action should you take?（）

A、Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE  B、Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE  C、Use compression when performing tape backups  D、Configure multiple SBT channels  

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第2题
[] Multiple RMAN sessions are connected to the database instance. Examine the following output when backup commands are running in server sessions: What could have helped you to correlate server sessions with channels?（） Multiple RMAN sessions are connected to the database instance. Examine the following output when backup commands are running in server sessions: What could have helped you to correlate server sessions with channels?（）

A、A. Implement RMAN multiplexing  B、B. Set the DEBUG ON in the RMAN script  C、C. Specify the command ID in the RMAN script  D、D. Use a tag with the RMAN BACKUP command  

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第3题
[单选题] Multiple RMAN sessions are connected to the database instance. Examine the following output when backup commands are running in server sessions: What could have helped you to correlate server sessions with channels?（）

A、Implement RMAN multiplexing  B、Set the DEBUG ON in the RMAN script  C、Specify the command ID in the RMAN script  D、Use a tag with the RMAN BACKUP command  

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第4题
[多选题] You use a recovery catalog for maintaining your database backups.You execute the following command:$rman TARGET / CATALOG rman / cat@catdbRMAN > BACKUP VALIDATE DATABASE ARCHIVELOG ALL;Which two statements are true?（）

A、Corrupted blocks, if any, are repaired.  B、Checks are performed for physical corruptions.  C、Checks are performed for logical corruptions.  D、Checks are performed to confirm whether all database files exist in correct locations  E、Backup sets containing both data files and archive logs are created.  

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第5题
[单选题] In your database, the flash recovery area (FRA) is configured as the default for RMAN backups. You executed the following commands to configure the settings in RMAN: RMAN> CONFIGURE DEVICE TYPE disk PARALLELISM 2 BACKUP TYPE TO BACKUPSET; RMAN> CONFIGURE CHANNEL 1 DEVICE TYPE disk FORMAT '/home/oracle/disk1/%U'; RMAN> CONFIGURE CHANNEL 2 DEVICE TYPE disk FORMAT '/home/oracle/disk2/%U'; You issue the following RMAN command to backup the database: RMAN> RUN 2> { 3> ALLOCATE CHANNEL ch1 DEVICE TYPE disk; 4> BACKUP DATABASE; 5> } Which statement is true about the outcome?（）

A、Only one channel is allocated and the backup is created in the flash recovery area  B、Only one channel is allocated and the backup is created in the destination specified for channel 1  C、Two channels are allocated and backup sets are created in the destinations specified for channels 1 and 2  D、Three channels are allocated and backup sets are created in the destinations specified for channels 1, 2, and FRA  

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第6题
[多选题] What happens when you run the SQL Tuning Advisor with limited scope?（）

A、Access pathanalysis is not performed for SQL statements.  B、SQL structure analysis is not performed for SQL statements.  C、SQL Profile recommendations are not generated for SQL statements.  D、Staleness and absence of statistics are not checked for the objects in the SQL Tuning Advisor. In this case, SQL Tuning Advisor produces recommendations based on statistical checks, access path analysis, and SQL structure analysis. SQL profile recommendations are not generated.  

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第7题
[多选题] You need to perform a block media recovery on the tools01.dbf data file in the SALES database by using Recovery Manager (RMAN). Which two are the prerequisites to perform this operation? （）(Choose two)

A、You must configure block change tracking file  B、You must have first level 1 backups for RMAN to restore blocks  C、You must ensure that the SALES database is mounted or open  D、You must have full or level 0 backups for RMAN to restore blocks  E、You must take the tools01.dbf data file offline before you start a block media recovery  

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第8题
[单选题] You are creating a SQL Tuning Set to allow a group of SQL statements to be passed into the SQL Tuning Advisor. Which packages will you use to create the SQL Tuning Set？（）

A、 DBMS_WORKLOAD_REPOSITORY  B、 DBMS_RESOURCE_MANAGER  C、 DBMS_SQLTUNE  D、 DBMS_ADVISOR  

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第9题
[单选题] You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups. Which action should you take？（）

A、 Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE  B、 Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE  C、 Use compression when performing tape backups  D、 Configure multiple SBT channels  

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