Choose three.
Which three are true about corrupted data blocks and their recovery in an
Oracle Database?
A.If a row lock is held by a nonexistent transaction the block containing the正确答案DEF
Row is media corrupt. B.DB_BLOCK_CHECKING=TRUE causes a check sum to be added to each data block to
Help detect physical or media corruption. C.A media corrupt block is one where the block is not formatted correctly. D.The ANALYZE TABLE <table_name> VALIDATE STRUCTURE CASCADE command verifies
That each table row has an index entry pointing to it. E.If a row lock is held by a nonexistent transaction the block containing the
Row is logically corrupt. F.DB_LOST_WRITE_PROTECT=TYPICAL causes extra logging overhead on the standby
Database.
