（573）Upon starting your database,you receive the following error:

SQL>startup ORACLE instance started.

Total System Global Area 171581440 bytes

Fixed Size 1298640 bytes

Variable Size 146804528 bytes

Database Buffers 20971520 bytes

Redo Buffers 2506752 bytes

Database mounted.

ORA-00313:open failed for members of log group 1 of thread 1

ORA-00312:online log 1 thread 1:'/oracle01/oradata/orcl/redo01.log'

ORA-00312:online log 1 thread 1:'/oracle01/oradata/orcl/redo01a.log'

You can choose from the following steps:

Which is the correct order of these steps in this case?

a. Restore the database datafiles.

b. Issue the alter database clear unarchived logfile group 1 command.

c. Issue the alter database open command.

d. Issue the alter database open resetlogs command.

e. Recover the database using point-in-time recovery.

f. Issue the Startup Mount command to mount the database.

g. Back up the database.

A. a,f,e,d,g

B. f,e,d

C. f,b,c,g

D. a,f,c

E. The database cannot be recovered.

答案：（C）

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Oracle 11G OCP 1Z0-053 573