多項選擇題

You are maintaining a database that is in ARCHIVELOG mode. You have configured the flash recovery area in your database. The database is in MOUNT EXCLUSIVE mode， and you want to configure the Flashback Database feature. Which two options are NOT required to configure the Flashback Database feature？（）

A. Open the database in read-only mode.
B. Set the retention target with the DB_FLASHBACK_RETENTION_TARGET initialization parameter.
C. Enable the block change tracking feature.
D. Execute the ALTER DATABASE FLASHBACK ON statement.

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單項選擇題

You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema.
Which process writes the before images of the physical database blocks to the flashback database logs？（）

A. LGWR
B. DBWR
C. MMON
D. RVWR

單項選擇題

You are required to flashback your database. You want to find the amount of flashback data generated since the database was opened. Which task will you perform to obtain the required information？（）

A. Query the V$FLASHBACK_DATABASE_LOG view.
B. Query the V$FLASHBACK_DATABASE_STAT view.
C. Check the value of the DB_FLASHBACK_RETENTION_TARGET initialization parameter.
D. Query the V$RECOVERY_FILE_DEST view.

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你可能感興趣的試題

You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema. Which process writes the before images of the physical database blocks to the flashback database logs？（）

You are required to flashback your database. You want to find the amount of flashback data generated since the database was opened. Which task will you perform to obtain the required information？（）

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You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema.
Which process writes the before images of the physical database blocks to the flashback database logs？（）

You are required to flashback your database. You want to find the amount of flashback data generated since the database was opened. Which task will you perform to obtain the required information？（）