多項選擇題

To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file? （）(Choose two.)

A. Multiple change tracking files can be created for a database.
B. The change tracking file must be created after the first level 0 backup.
C. RMAN does not support backup and recovery of the change tracking file.
D. The database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.

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單項選擇題

Which statements about the MEMORY_TARGET initialization parameter are true?（） (Choose all that apply.)

A. MEMORY_TARGET can be increased up to the value of MEMORY_MAX_TARGET, if MEMORY_MAX_TARGET is set to a value greater than zero
B. MEMORY_MAX_TARGET defaults to a value of zero if MEMORY_TARGET is not set
C. MEMORY_TARGET represents the total amount of memory that can be allocated to SGA and PGA memory structures.
D. MEMORY_TARGET is static and cannot be modified without shutting down the instance

單項選擇題

You want to configure the Flashback Database feature and retain flashback logs for three days. Presently the database is open and configured in ARCHIVELOG mode.
The following steps must be performed in the correct sequence to do this:

Choose the correct sequence.（）

A.4，1，3，2，5
B.4，3，1，2，5
C.2，4，3，5，1
D.4，2，5，3，1

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To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file? （）(Choose two.)

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Which statements about the MEMORY_TARGET initialization parameter are true?（） (Choose all that apply.)

You want to configure the Flashback Database feature and retain flashback logs for three days. Presently the database is open and configured in ARCHIVELOG mode. The following steps must be performed in the correct sequence to do this: Choose the correct sequence.（）

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You want to configure the Flashback Database feature and retain flashback logs for three days. Presently the database is open and configured in ARCHIVELOG mode.
The following steps must be performed in the correct sequence to do this:

Choose the correct sequence.（）