單項選擇題

Which is the correct description of the significance of the ORACLE_HOME environmental variable？（）

A.It specifies the directory containing the Oracle software.
B.It specifies the directory containing the Oracle-Managed Files.
C.It specifies the directory for database files， if not specified explicitly.
D.It specifies the base directory of Optimal Flexible Architecture （OFA） .

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多項選擇題

Your database is configured in NOARCHIVELOG mode. All the control files have been lost due to a hard disk failure but the data files are not lost. You have the closed whole database backup available to you. Which two statements are true in this scenario？（）

A.The instance aborts.
B.The database cannot be recovered.
C.The database can be recovered by restoring the control files from the backup.
D.The database remains opened and you have to shut it down with the ABORT option.
E.The database can be restored till the point of the last closed whole database backup.

多項選擇題

Which two operations require undo data？（）

A.committing a transaction
B.rolling back a transaction
C.recovering from failed transactions
D.recording a transaction to redo log files
E.rolling forward during instance recovery

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Which is the correct description of the significance of the ORACLE_HOME environmental variable？（）

你可能感興趣的試題

Your database is configured in NOARCHIVELOG mode. All the control files have been lost due to a hard disk failure but the data files are not lost. You have the closed whole database backup available to you. Which two statements are true in this scenario？（）

Which two operations require undo data？（）

Which is the correct description of the significance of the ORACLE_HOME environmental variable？（）

Your database is configured in NOARCHIVELOG mode. All the control files have been lost due to a hard disk failure but the data files are not lost. You have the closed whole database backup available to you. Which two statements are true in this scenario？（）