單項(xiàng)選擇題

A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows:

What happens when the whole CONTROLLER1 Failure group is damaged?（）

A. The transactions that use the disk group will halt.
B. The mirroring of allocation units occurs within the CONTROLLER2 failure group.
C. The data in the CONTROLLER1 failure group is shifted to the CONTROLLER2 failure group and implicit rebalancing is triggered.
D. The ASM does not mirror any data and newly allocated primary allocation units (AU) are stored in the CONTROLLER2 failure group.

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多項(xiàng)選擇題

The EMP table has some discrepancy in data entry with a particular employee ID. You execute the query as shown in the Exhibit to retrieve all versions of the row that exist between two SCNs.
View the Exhibit.

Which two statements about the results of the query shown in the Exhibit are correct?（）

A. The LAST_SCN value in the first row is NULL, which means that the versions of the row still exist at SCN 6636300. LAST_SCN
B. The LAST_SCN value in the second row in NULL, which means that the version of the row still exists at SCN 6636300.
C. The LAST_SCN value in the third row is 6636280, which means that the version of row exists above SCN 6636280.
D. The LAST_SCN value in the second row is NULL, which means that the version of the row no longer exists because it was deleted. LAST_SCN

單項(xiàng)選擇題

Before a Flashback Table operation, you execute the following command:
ALTER TABLE employees ENABLE ROW MOVEMENT;
Why would you need this to be executed?（）

A. Because row IDs may change during the flashback operation
B. Because the object number changes after the flashback operation
C. Because the rows are retrieved from the recycle bin during the flashback operation
D. Because the table is moved forward and back to a temporary during the flashback opertion

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A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows: What happens when the whole CONTROLLER1 Failure group is damaged?（）

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Before a Flashback Table operation, you execute the following command: ALTER TABLE employees ENABLE ROW MOVEMENT; Why would you need this to be executed?（）

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A database instance is using an Automatic Storage Management (ASM) instance, which has a disk group, DGROUP1, created as follows:

What happens when the whole CONTROLLER1 Failure group is damaged?（）

Before a Flashback Table operation, you execute the following command:
ALTER TABLE employees ENABLE ROW MOVEMENT;
Why would you need this to be executed?（）