Oracle 11G OCP 1Z0-053 545

LuiseDalian發表於2014-10-30
(545)When performing an online backup,what is the proper order of the following steps?

a. Issue the alter database end backup command.

b. Back up the archived redo logs.

c. Issue the alter database begin backup command.

d. Back up the database files.

e. Determine the beginning log sequence number.

f. Determine the ending log sequence number.

g. Force a log switch with the alter system switch logfile command.

A. a,b,c,d,e,f,g

B. c,d,a,b,e,g,f

C. f,d,b,g,a,c,e

D. e,c,d,a,g,f,b

E. a,f,b,g,e,c,d

答案:(D)

解析:

((1)記下開始的日誌序列號,然後開始備份資料庫

(2)開始將資料庫置為備份狀態

sys@TEST1107>alter database begin backup;

Database altered.

(3)OS級拷貝檔案

(4)結束資料庫的備份狀態

sys@TEST1107>alter database end backup;

Database altered.

(5)切換日誌,使日誌歸檔

sys@TEST1107>alter system switch logfile;

System altered.

(6)記下結束的日誌序列號

(7)在OS級別拷貝歸檔日誌檔案)

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