OCP新题库，052新考题及答案整理-第24题

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

OCP新题库，052新考题及答案整理-第24题

原文：http://blog.51cto.com/13854012/2151079