以前考OCP認(rèn)證并不難，但今年Oracle對(duì)OCP考試進(jìn)行了更新，OCP的三種題庫全變了，比如052題庫不光考題變了，而且還在不斷的加入新考題，沒有比較穩(wěn)定的題庫大大的增加了考試的難度，這里整理了一些052的新題，希望對(duì)大家有幫助。

24、YOUR DB_RECOVERY_FILE_DEST_SIZE Is 8G.

Currently, 5G of the space Is used of which 4G consists of obsolete backups.

You execute this command:

SQL> ALTER SYSTEM SET db_recovery_file_dest_size=2G;

What is the outcome?

A) It changes DB_RECOVERY_FILE_DEST_SIZE to 5G.

B) It changes DB_RECOVERY_FILE_DEST_SIZE to 2G without deleting valid backups.

C) It falls because DB_RECOVERY_FILE_DEST_SIZE is a static parameter.

D) It changes DB_RECOVERY_FILE_DEST_SIZE to 2G and deletes the obsolete backups.

E) It fails because the new size is less than 5G.

Answer:D

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