單項(xiàng)選擇題

You have a disk group， DGROUP1， with three disk and NORMAL redundancy. You execute the following command to create a template for the disk group： ALTER DISKGROUP dgroup1 ADD TEMPLATE my_temp ATTRIBUTES （MIRROR FINE）；Which statement is true？（）

A. When a file is created in DGROUP1 with the template， it would have three-way mirroring.
B. When a file is created in DGROUP1， the MY_TEMP template becomes the default template.
C. When a file is created in DGROUP1 with the template， it would have two-way mirroring and file striping.
D. When a file is created in DGROUP1 with the template， it would have three-way mirroring and file striping.
E. When a file is created in DGROUP1 with the template， it would have two-way mirroring but no file striping.

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The production database has been functional for the last seven days. Because of application requirements， some of the initialization parameters were changed during run time without any comments. You have asked to find out the value of the parameters when the instance was started.Which source would you use to locate this information？（）

A. Fixed views
B. The alert log file
C. The parameter file
D. The server parameter file
E. Dynamic performance views

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You disabled the Flashback Database feature by using the following command：
SQL> ALTER DATABASE FLASHBACK OFF；
What would be the effect of this command on the existing flashback logs？（）

A. Flashback logs are not deleted.
B. Flashback logs are deleted automatically.
C. Flashback logs are deleted only if you are using Recovery Manager （RMAN）
D. Flashback logs are deleted only if you are using Oracle Manager Files （OFM）
E. Flashback logs are deleted only if you are using Automatic Storage Management （ASM）

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You have a disk group， DGROUP1， with three disk and NORMAL redundancy. You execute the following command to create a template for the disk group： ALTER DISKGROUP dgroup1 ADD TEMPLATE my_temp ATTRIBUTES （MIRROR FINE）；Which statement is true？（）

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You disabled the Flashback Database feature by using the following command： SQL> ALTER DATABASE FLASHBACK OFF； What would be the effect of this command on the existing flashback logs？（）

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You have a disk group， DGROUP1， with three disk and NORMAL redundancy. You execute the following command to create a template for the disk group： ALTER DISKGROUP dgroup1 ADD TEMPLATE my_temp ATTRIBUTES （MIRROR FINE）；Which statement is true？（）

You disabled the Flashback Database feature by using the following command：
SQL> ALTER DATABASE FLASHBACK OFF；
What would be the effect of this command on the existing flashback logs？（）