單項(xiàng)選擇題

ou are in the middle of a transaction updating a very important table. The machine on which adatabase was running reboots because of power outage. This caused a database instance failure.
Which statement is true in this situation（）

A.The online redo log files and archived redo log files are required to accomplish the recovery.
B.The uncommitted transaction will be committed at the next startup of the database instance.
C.The uncommitted transaction is rolled back automatically at the next opening of the database.
D.The DBA has to perform the recovery on the database to recover the uncommitted transaction.

你可能感興趣的試題

單項(xiàng)選擇題

Given below is a list of scenarios：
1）A user terminates his session abnormally.
2）The connection between the server and the client application terminates because of a network failure.
3）A schema is accidentally dropped.
4）The tablespace is accidentally dropped from the database.
5）The hard disk gets corrupted and the data files in the disk are lost.
6）The database instance abnormally shuts down because of power failure.
Which scenarios require DBA intervention to perform recovery（）

A.4 and 5
B.1，3，and 6
C.4，5，and 6
D.3，4，and 5
E.1，2，and 6

多項(xiàng)選擇題

In which of the scenarios will the DBA perform recovery（）

A.The alert log file is corrupted.
B.A tablespace is accidentally dropped.
C.One of the redo log members is corrupted.
D.A database user terminates the session abnormally.
E.The hard disk on which the data file is stored is corrupted.

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ou are in the middle of a transaction updating a very important table. The machine on which adatabase was running reboots because of power outage. This caused a database instance failure. Which statement is true in this situation（）

你可能感興趣的試題

In which of the scenarios will the DBA perform recovery（）

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ou are in the middle of a transaction updating a very important table. The machine on which adatabase was running reboots because of power outage. This caused a database instance failure.
Which statement is true in this situation（）