多项选择题 You are trying to recover your database. During the recovery process， you receive the following error：   ORA-00279： change 5033391 generated at 08/17/2008 06：37：40 needed for thread 1ORA-00289： suggestion ：  /oracle01/flash_recovery_area/ORCL/archivelog/2008_08_17 /o1_mf_1_11_%u_.arc  ORA-00280： change 5033391 for thread 1 is in sequence #11 ORA-00278： log  file ，，/oracle01/flash_recovery_area/ORCL/archivelog/2008_08_17  /o1_mf_1_10_4bj6wnqm_.arc no longer needed for this recovery Specify log： {=suggested | filename | AUTO | CANCEL} ORA-00308： cannot open archived log  ，，/oracle01/flash_recovery_area/ORCL/archivelog/2008_08_17 /o1_mf_1_11_%u_.arc  ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3   How do you respond to this error？（）

单项选择题 Youhavelostdatafile4fromyourdatabase.Whichistypicallythefastestwaytorestoreyourdatabase？（）

单项选择题 WhatdoestheSCNrepresent？（）