[转]RMAN检测数据库坏块

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

[转]RMAN检测数据库坏块

标签：