backup validate check logical database;
select * from v$database_block_corruption;
RMAN> backup validate check logical database; Starting backup at 02-SEP-15 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=141 device type=DISK allocated channel: ORA_DISK_2 channel ORA_DISK_2: SID=9 device type=DISK channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00001 name=/u02/app/oradata/ORCL/system01.dbf input datafile file number=00006 name=/u02/app/oradata/ORCL/rlst01.dbf input datafile file number=00005 name=/u02/app/oradata/ORCL/mssm01.dbf channel ORA_DISK_2: starting full datafile backup set channel ORA_DISK_2: specifying datafile(s) in backup set input datafile file number=00002 name=/u02/app/oradata/ORCL/sysaux01.dbf input datafile file number=00003 name=/u02/app/oradata/ORCL/undotbs01.dbf input datafile file number=00004 name=/u02/app/oradata/ORCL/users01.dbf channel ORA_DISK_2: backup set complete, elapsed time: 00:00:25 List of Datafiles ================= File Status Marked Corrupt Empty Blocks Blocks Examined High SCN ---- ------ -------------- ------------ --------------- ---------- 2 OK 0 17775 84503 3456527 File Name: /u02/app/oradata/ORCL/sysaux01.dbf Block Type Blocks Failing Blocks Processed ---------- -------------- ---------------- Data 0 20940 Index 0 17430 Other 0 28335 File Status Marked Corrupt Empty Blocks Blocks Examined High SCN ---- ------ -------------- ------------ --------------- ---------- 3 OK 0 1 26893 3456665 File Name: /u02/app/oradata/ORCL/undotbs01.dbf Block Type Blocks Failing Blocks Processed ---------- -------------- ---------------- Data 0 0 Index 0 0 Other 0 26879 File Status Marked Corrupt Empty Blocks Blocks Examined High SCN ---- ------ -------------- ------------ --------------- ---------- 4 OK 0 14 643 2732847 File Name: /u02/app/oradata/ORCL/users01.dbf Block Type Blocks Failing Blocks Processed ---------- -------------- ---------------- Data 0 48 Index 0 2 Other 0 576 channel ORA_DISK_2: starting full datafile backup set channel ORA_DISK_2: specifying datafile(s) in backup set including current control file in backup set channel ORA_DISK_2: backup set complete, elapsed time: 00:00:01 List of Control File and SPFILE =============================== File Type Status Blocks Failing Blocks Examined ------------ ------ -------------- --------------- Control File OK 0 614 channel ORA_DISK_2: starting full datafile backup set channel ORA_DISK_2: specifying datafile(s) in backup set including current SPFILE in backup set channel ORA_DISK_2: backup set complete, elapsed time: 00:00:00 List of Control File and SPFILE =============================== File Type Status Blocks Failing Blocks Examined ------------ ------ -------------- --------------- SPFILE OK 0 2 channel ORA_DISK_1: backup set complete, elapsed time: 00:00:42 List of Datafiles ================= File Status Marked Corrupt Empty Blocks Blocks Examined High SCN ---- ------ -------------- ------------ --------------- ---------- 1 OK 0 13138 88333 3456665 File Name: /u02/app/oradata/ORCL/system01.dbf Block Type Blocks Failing Blocks Processed ---------- -------------- ---------------- Data 0 59322 Index 0 12665 Other 0 3195 File Status Marked Corrupt Empty Blocks Blocks Examined High SCN ---- ------ -------------- ------------ --------------- ---------- 5 OK 0 12670 12800 1408151 File Name: /u02/app/oradata/ORCL/mssm01.dbf Block Type Blocks Failing Blocks Processed ---------- -------------- ---------------- Data 0 2 Index 0 0 Other 0 128 File Status Marked Corrupt Empty Blocks Blocks Examined High SCN ---- ------ -------------- ------------ --------------- ---------- 6 OK 0 22441 25600 2098889 File Name: /u02/app/oradata/ORCL/rlst01.dbf Block Type Blocks Failing Blocks Processed ---------- -------------- ---------------- Data 0 2739 Index 0 158 Other 0 262 Finished backup at 02-SEP-15
利用数据字典表查询是否有坏块
SQL> desc v$database_block_corruption Name Null? Type ----------------------------------------- -------- ---------------------------- FILE# NUMBER BLOCK# NUMBER BLOCKS NUMBER CORRUPTION_CHANGE# NUMBER CORRUPTION_TYPE VARCHAR2(9) SQL> select * from v$database_block_corruption; no rows selected
如果存在坏块可使用以下脚本查询：
SELECT e.owner, e.segment_type, e.segment_name, e.partition_name, c.file#, greatest(e.block_id, c.block#) corr_start_block#, least(e.block_id + e.blocks - 1, c.block# + c.blocks - 1) corr_end_block#, least(e.block_id + e.blocks - 1, c.block# + c.blocks - 1) - greatest(e.block_id, c.block#) + 1 blocks_corrupted, null description FROM dba_extents e, v$database_block_corruption c WHERE e.file_id = c.file# AND e.block_id <= c.block# + c.blocks - 1 AND e.block_id + e.blocks - 1 >= c.block# UNION SELECT s.owner, s.segment_type, s.segment_name, s.partition_name, c.file#, header_block corr_start_block#, header_block corr_end_block#, 1 blocks_corrupted, 'Segment Header' description FROM dba_segments s, v$database_block_corruption c WHERE s.header_file = c.file# AND s.header_block between c.block# and c.block# + c.blocks - 1 UNION SELECT null owner, null segment_type, null segment_name, null partition_name, c.file#, greatest(f.block_id, c.block#) corr_start_block#, least(f.block_id + f.blocks - 1, c.block# + c.blocks - 1) corr_end_block#, least(f.block_id + f.blocks - 1, c.block# + c.blocks - 1) - greatest(f.block_id, c.block#) + 1 blocks_corrupted, 'Free Block' description FROM dba_free_space f, v$database_block_corruption c WHERE f.file_id = c.file# AND f.block_id <= c.block# + c.blocks - 1 AND f.block_id + f.blocks - 1 >= c.block# order by file#, corr_start_block#;
SELECT tablespace_name, segment_type, owner, segment_name FROM dba_extents WHERE file_id = &fileid and &blockid between block_id AND block_id + blocks - 1;
参考：http://www.cnblogs.com/macleanoracle/archive/2013/03/19/2968101.html