多项选择题
A. BMR increases the Mean Time To Recover （MTTR）.
B. BMR can only be implemented using Recovery Manager （RMAN）.
C. The blocks that need to be recovered are accessible during BMR.
D. BMR cannot be performed using cumulative incremental backups.
E. The datafile must be restored if most of the blocks in the datafile are corrupt.
单项选择题 You issued the following command to analyze the SCOTT.EMP table for block corruption： ANALYZE TABLE SCOTT.EMP VALIDATE STRUCTURE； You received the following error： ORA-01578： ORACLE data block corrupted （file # %s， block # %s） How will you resolve the block corruption problem？（）
单项选择题 You received the following error： ORA-01578： ORACLE data block corrupted （file # %s， block # %s） Which file will you check to view additional information regarding the cause of this error？（）
单项选择题 YouwanttorebuildafreelistinthefreelistsoftheEMPLOYEEtableintheScottschema.Whichpackagewillyouusetoaccomplishthis？（）