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.
正确答案是C