RMAN深入解析之--BlockRecover恢复坏块
案例环境：
操作系统：RedHat EL5
Oracle： Oracle 11gR2
案例描述：
通过块介质恢复（Block Media Recover:BMR)执行块级别的恢复操作来修复Oracle数据库上的逻辑或物理上损坏的数据块。
1、模拟数据块被破坏
10:26:48 SYS@ prod>conn scott/tiger
Connected.
10:26:51 SCOTT@ prod>select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
EMP1 TABLE
SALGRADE TABLE
Elapsed: 00:00:00.10
10:26:55 SCOTT@ prod>
10:27:37 SYS@ prod>desc dba_segments
Name Null? Type
----------------------------------------------------------------- -------- -------------
OWNER VARCHAR2(30)
SEGMENT_NAME VARCHAR2(81)
PARTITION_NAME VARCHAR2(30)
SEGMENT_TYPE VARCHAR2(18)
SEGMENT_SUBTYPE VARCHAR2(10)
TABLESPACE_NAME VARCHAR2(30)
HEADER_FILE NUMBER
HEADER_BLOCK NUMBER
BYTES NUMBER
BLOCKS NUMBER
EXTENTS NUMBER
INITIAL_EXTENT NUMBER
NEXT_EXTENT NUMBER
MIN_EXTENTS NUMBER
MAX_EXTENTS NUMBER
MAX_SIZE NUMBER
RETENTION VARCHAR2(7)
MINRETENTION NUMBER
PCT_INCREASE NUMBER
FREELISTS NUMBER
FREELIST_GROUPS NUMBER
RELATIVE_FNO NUMBER
BUFFER_POOL VARCHAR2(7)
FLASH_CACHE VARCHAR2(7)
CELL_FLASH_CACHE VARCHAR2(7)
10:27:41 SYS@ prod>col segment_name for a20
10:27:59 SYS@ prod>select owner,segment_name,SEGMENT_TYPE,HEADER_BLOCK from dba_segments
10:29:06 2 where owner='SCOTT' and segment_name='EMP1';
OWNER SEGMENT_NAME SEGMENT_TYPE HEADER_BLOCK
------------------------------ -------------------- ------------------ ------------
SCOTT EMP1 TABLE 170通过以上查询，可以知道EMP1 table的segment header block为170；利用Uedit32，打开数据文件（users01.dbf)进行编辑破坏！
以下是计算block 170和block 171在Uedit32编辑中的offset：
10:29:24 SYS@ prod>select to_char(170*8*1024, 'xxxxxxxxxxxxxxxxxxxxx') from dual;
TO_CHAR(170*8*1024,'XX
----------------------
154000
10:30:27 SYS@ prod>select to_char(171*8*1024, 'xxxxxxxxxxxxxxxxxxxxx') from dual;
TO_CHAR(171*8*1024,'XX
----------------------
156000
以下是Uedit32编辑users01.dbf图片：
通过转储数据块验证：
10:30:37 SYS@ prod>alter system dump datafile 4 block 170;
System altered.
[oracle@rh7 ~]$ ls -lt /u01/app/oracle/diag/rdbms/prod/prod/trace/|more
total 14300
-rw-r----- 1 oracle oinstall 4492 Jul 15 11:34 prod_ora_2883.trc
-rw-r----- 1 oracle oinstall 69 Jul 15 11:34 prod_ora_2883.trm
-rw-r----- 1 oracle oinstall 557756 Jul 15 10:17 alert_prod.log
-rw-r----- 1 oracle oinstall 947 Jul 15 10:17 prod_ckpt_2541.trc
-rw-r----- 1 oracle oinstall 59 Jul 15 10:17 prod_ckpt_2541.trm
-rw-r----- 1 oracle oinstall 1783 Jul 15 10:12 prod_j000_2588.trc
-rw-r----- 1 oracle oinstall 80 Jul 15 10:12 prod_j000_2588.trm查看转储文件：
[oracle@rh7 ~]$ cat /u01/app/oracle/diag/rdbms/prod/prod/trace/prod_ora_2883.trc|more
Trace file /u01/app/oracle/diag/rdbms/prod/prod/trace/prod_ora_2883.trc
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1
System name: Linux
Node name: rh7
Release: 2.6.32-358.el6.x86_64
Version: #1 SMP Tue Jan 29 11:47:41 EST 2013
Machine: x86_64
Instance name: prod
Redo thread mounted by this instance: 1
Oracle process number: 26
Unix process pid: 2883, p_w_picpath: oracle@rh7 (TNS V1-V3)
*** 2014-07-15 11:34:50.092
*** SESSION ID:(37.32) 2014-07-15 11:34:50.092
*** CLIENT ID:() 2014-07-15 11:34:50.092
*** SERVICE NAME:(SYS$USERS) 2014-07-15 11:34:50.092
*** MODULE NAME:(sqlplus@rh7 (TNS V1-V3)) 2014-07-15 11:34:50.092
*** ACTION NAME:() 2014-07-15 11:34:50.092
Start dump data blocks tsn: 4 file#:4 minblk 170 maxblk 170
Block dump from cache:
Dump of buffer cache at level 4 for tsn=4, rdba=16777386
Block dump from disk:
buffer tsn: 4 rdba: 0x010000aa (4/170)
scn: 0x0000.001f891c seq: 0x02 flg: 0x04 tail: 0x891c2302
frmt: 0x02 chkval: 0x8eee type: 0x23=PAGETABLE SEGMENT HEADER
Hex dump of block: st=0, typ_found=1
Dump of memory from 0x00007F7DFC5C7A00 to 0x00007F7DFC5C9A007F7DFC5C7A00 0000A223 010000AA 001F891C 04020000 [#...............]
---此行内容与Uedit32打开内容一致
7F7DFC5C7A10 00008EEE 00000000 00000000 00000000 [................]
7F7DFC5C7A20 00000000 00000001 00000008 00000A9C [................]
7F7DFC5C7A30 00000000 00000008 00000008 010000B0 [................]
7F7DFC5C7A40 00000000 00000000 00000000 00000008 [................]
7F7DFC5C7A50 00000000 00000000 00000000 00000000 [................]
7F7DFC5C7A60 00000008 00000008 010000B0 00000000 [................]
7F7DFC5C7A70 00000000 00000000 00000008 010000A8 [................]
7F7DFC5C7A80 010000A8 00000000 00000000 00000000 [................]
7F7DFC5C7A90 00000000 00000000 00000000 00000000 [................]
Repeat 3 times
7F7DFC5C7AD0 00000001 00002000 00000000 00001434 [..... ......4...]
7F7DFC5C7AE0 00000000 010000A9 00000001 010000A8 [................]
7F7DFC5C7AF0 010000A9 00000000 00000000 00000000 [................]
7F7DFC5C7B00 00000000 00000000 00000001 00000000 [................]
7F7DFC5C7B10 0001257B 10000000 010000A8 00000008 [{%..............]
7F7DFC5C7B20 00000000 00000000 00000000 00000000 [................]
Repeat 152 times
7F7DFC5C84B0 010000A8 010000AB 00000000 00000000 [................]
7F7DFC5C84C0 00000000 00000000 00000000 00000000 [................]
Repeat 151 times
7F7DFC5C8E40 00000000 00000000 010000A9 00000000 [................]
7F7DFC5C8E50 00000000 00000000 00000000 00000000 [................]
Repeat 185 times
7F7DFC5C99F0 00000000 00000000 00000000 891C2302 [.............#..]
Extent Control Header
-----------------------------------------------------------------
Extent Header:: spare1: 0 spare2: 0 #extents: 1 #blocks: 8
last map 0x00000000 #maps: 0 offset: 2716
Highwater:: 0x010000b0 ext#: 0 blk#: 8 ext size: 8
#blocks in seg. hdr's freelists: 0
#blocks below: 8
mapblk 0x00000000 offset: 0
Unlocked
--------------------------------------------------------
Low HighWater Mark :
Highwater:: 0x010000b0 ext#: 0 blk#: 8 ext size: 8
#blocks in seg. hdr's freelists: 0
#blocks below: 8
mapblk 0x00000000 offset: 0
Level 1 BMB for High HWM block: 0x010000a8
Level 1 BMB for Low HWM block: 0x010000a8
--------------------------------------------------------
Segment Type: 1 nl2: 1 blksz: 8192 fbsz: 0
L2 Array start offset: 0x00001434
First Level 3 BMB: 0x00000000
L2 Hint for inserts: 0x010000a9
Last Level 1 BMB: 0x010000a8
Last Level II BMB: 0x010000a9
Last Level III BMB: 0x00000000
Map Header:: next 0x00000000 #extents: 1 obj#: 75131 flag: 0x10000000
Inc # 0
Extent Map
-----------------------------------------------------------------
0x010000a8 length: 8
Auxillary Map
--------------------------------------------------------
Extent 0 : L1 dba: 0x010000a8 Data dba: 0x010000ab
--------------------------------------------------------
Second Level Bitmap block DBAs
--------------------------------------------------------
DBA 1: 0x010000a9
End dump data blocks tsn: 4 file#: 4 minblk 170 maxblk 1702、将Uedit32（通过16进制编辑功能）编辑过的数据文件上传到数据库
13:59:58 SYS@ prod>alter system flush buffer_cache;
System altered.
读取数据出错：
14:00:05 SYS@ prod>select * from scott.emp1;
select * from scott.emp1
*
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 4, block # 170)
ORA-01110: data file 4: '/u01/app/oracle/oradata/prod/users01.dbf'验证数据文件：
[oracle@rh7 ~]$ dbv file=/u01/app/oracle/oradata/prod/users01.dbf blocksize=8192
DBVERIFY: Release 11.2.0.1.0 - Production on Tue Jul 15 13:59:41 2014
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
DBVERIFY - Verification starting : FILE = /u01/app/oracle/oradata/prod/users01.dbf
Page 170 is marked corrupt
Corrupt block relative dba: 0x010000aa (file 4, block 170)
Bad check value found during dbv:
Data in bad block:
type: 35 format: 2 rdba: 0x010000aa
last change scn: 0x0000.001f891c seq: 0x2 flg: 0x04
spare1: 0x0 spare2: 0x0 spare3: 0x0
consistency value in tail: 0x891c2302
check value in block header: 0x8eee
computed block checksum: 0x2020
Page 171 is marked corrupt
Corrupt block relative dba: 0x010000ab (file 4, block 171)
Bad header found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x012020ab
last change scn: 0x2020.201f890b seq: 0x2 flg: 0x04
spare1: 0x20 spare2: 0x20 spare3: 0x2020
consistency value in tail: 0x890b0602
check value in block header: 0xcf8b
computed block checksum: 0x2e00
Page 172 is marked corrupt
Corrupt block relative dba: 0x010000ac (file 4, block 172)
Bad header found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x012020ac
last change scn: 0x2020.201f891c seq: 0x3 flg: 0x06
spare1: 0x20 spare2: 0x20 spare3: 0x2020
consistency value in tail: 0x891c0603
check value in block header: 0xa5b1
computed block checksum: 0x0
Page 173 is marked corrupt
Corrupt block relative dba: 0x010000ad (file 4, block 173)
Bad header found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x012020ad
last change scn: 0x2020.201f891c seq: 0x1 flg: 0x04
spare1: 0x20 spare2: 0x20 spare3: 0x2020
consistency value in tail: 0x891c0601
check value in block header: 0xf6ab
computed block checksum: 0x2020
Page 174 is marked corrupt
Corrupt block relative dba: 0x010000ae (file 4, block 174)
Bad header found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x012020ae
last change scn: 0x2020.201f891c seq: 0x1 flg: 0x04
spare1: 0x20 spare2: 0x20 spare3: 0x2020
consistency value in tail: 0x891c0601
check value in block header: 0xcef0
computed block checksum: 0x20
Page 175 is marked corrupt
Corrupt block relative dba: 0x010000af (file 4, block 175)
Bad header found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x012020af
last change scn: 0x2020.201f891c seq: 0x1 flg: 0x04
spare1: 0x20 spare2: 0x20 spare3: 0x2020
consistency value in tail: 0x891c0601
check value in block header: 0x146a
computed block checksum: 0x0
Page 176 is marked corrupt
Corrupt block relative dba: 0x010000b0 (file 4, block 176)
Bad header found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x012020b0
last change scn: 0x2020.201e6219 seq: 0x1 flg: 0x04
spare1: 0x20 spare2: 0x20 spare3: 0x2020
consistency value in tail: 0x62190601
check value in block header: 0x2185
computed block checksum: 0x2020DBVERIFY - Verification complete
Total Pages Examined : 12800
Total Pages Processed (Data) : 757
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 2
Total Pages Failing (Index): 0
Total Pages Processed (Other): 12024
Total Pages Processed (Seg) : 0
Total Pages Failing (Seg) : 0
Total Pages Empty : 10
Total Pages Marked Corrupt : 7
Total Pages Influx : 0
Total Pages Encrypted : 0
Highest block SCN : 2066716 (0.2066716)
从以上验证结果看：总共有7个数据块（170-176）被破坏！
3、利用RMAN进行修复
[oracle@rh7 ~]$ rman target /
Recovery Manager: Release 11.2.0.1.0 - Production on Tue Jul 15 14:02:16 2014
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: PROD (DBID=239333010)
RMAN> list backup of database;
using target database control file instead of recovery catalog
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
17 Full 1.13G DISK 00:01:21 03-JUL-14
BP Key: 17 Status: AVAILABLE Compressed: NO Tag: TAG20140703T171545
Piece Name: /u01/app/oracle/product/11.2.0/db_1/dbs/0lpcfu61_1_1
List of Datafiles in backup set 17
File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- --------- ----
1 Full 2066885 03-JUL-14 /u01/app/oracle/oradata/prod/system01.dbf
2 Full 2066885 03-JUL-14 /u01/app/oracle/oradata/prod/sysaux01.dbf
3 Full 2066885 03-JUL-14 /u01/app/oracle/oradata/prod/undotbs1.dbf
4 Full 2066885 03-JUL-14 /u01/app/oracle/oradata/prod/users01.dbf
5 Full 2066885 03-JUL-14 /u01/app/oracle/oradata/prod/example01.dbf
6 Full 2066885 03-JUL-14 /u01/app/oracle/oradata/prod/tbs1.dbf
7 Full 2066885 03-JUL-14 /u01/app/oracle/oradata/prod/undotbs2.dbf
8 Full 2066885 03-JUL-14 /u01/app/oracle/oradata/prod/perftbs01.dbfRMAN> blockrecover datafile 4 block 170,171,172,173,174,175,176;
Starting recover at 15-JUL-14
using channel ORA_DISK_1
channel ORA_DISK_1: restoring block(s)
channel ORA_DISK_1: specifying block(s) to restore from backup set
restoring blocks of datafile 00004
channel ORA_DISK_1: reading from backup piece /u01/app/oracle/product/11.2.0/db_1/dbs/0lpcfu61_1_1
channel ORA_DISK_1: piece handle=/u01/app/oracle/product/11.2.0/db_1/dbs/0lpcfu61_1_1 tag=TAG20140703T171545
channel ORA_DISK_1: restored block(s) from backup piece 1
channel ORA_DISK_1: block restore complete, elapsed time: 00:00:01
starting media recovery
media recovery complete, elapsed time: 00:00:07
Finished recover at 15-JUL-14恢复完成，验证：
RMAN> backup validate database;
Starting backup at 15-JUL-14
using channel ORA_DISK_1
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=/u01/app/oracle/oradata/prod/system01.dbf
input datafile file number=00002 name=/u01/app/oracle/oradata/prod/sysaux01.dbf
input datafile file number=00008 name=/u01/app/oracle/oradata/prod/perftbs01.dbf
input datafile file number=00004 name=/u01/app/oracle/oradata/prod/users01.dbf
input datafile file number=00005 name=/u01/app/oracle/oradata/prod/example01.dbf
input datafile file number=00007 name=/u01/app/oracle/oradata/prod/undotbs2.dbf
input datafile file number=00006 name=/u01/app/oracle/oradata/prod/tbs1.dbf
input datafile file number=00003 name=/u01/app/oracle/oradata/prod/undotbs1.dbf
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45
List of Datafiles
=================
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
1 OK 0 13407 99852 2117516
File Name: /u01/app/oracle/oradata/prod/system01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 67302
Index 0 15344
Other 0 3787
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
2 OK 0 17342 66627 2117514
File Name: /u01/app/oracle/oradata/prod/sysaux01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 11719
Index 0 7882
Other 0 29617
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
3 OK 0 1 128 2056342
File Name: /u01/app/oracle/oradata/prod/undotbs1.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 0
Index 0 0
Other 0 127
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
4 OK 0 11873 12800 2066716
File Name: /u01/app/oracle/oradata/prod/users01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 763
Index 0 2
Other 0 162
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
5 OK 0 1680 12804 1715036
File Name: /u01/app/oracle/oradata/prod/example01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 3987
Index 0 1132
Other 0 6001
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
6 OK 0 2 1281 2051631
File Name: /u01/app/oracle/oradata/prod/tbs1.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 1
Index 0 0
Other 0 1277
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
7 OK 0 8833 12800 2117516
File Name: /u01/app/oracle/oradata/prod/undotbs2.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 0
Index 0 0
Other 0 3967
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
8 OK 0 23967 25600 2006072
File Name: /u01/app/oracle/oradata/prod/perftbs01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 867
Index 0 261
Other 0 505
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
including current SPFILE in backup set
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
List of Control File and SPFILE
===============================
File Type Status Blocks Failing Blocks Examined
------------ ------ -------------- ---------------
SPFILE OK 0 2
Control File OK 0 594
Finished backup at 15-JUL-14[oracle@rh7 ~]$ sqlplus '/as sysdba'
SQL*Plus: Release 11.2.0.1.0 Production on Tue Jul 15 14:16:27 2014
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
14:16:27 SYS@ prod>select count(*) from scott.emp1;
COUNT(*)
----------
28
Elapsed: 00:00:00.02
14:16:35 SYS@ prod>select * from scott.emp1;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10
28 rows selected.
Elapsed: 00:00:00.07读取数据成功！
[oracle@rh7 ~]$ dbv file=/u01/app/oracle/oradata/prod/users01.dbf blocksize=8192
DBVERIFY: Release 11.2.0.1.0 - Production on Tue Jul 15 14:17:22 2014
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
DBVERIFY - Verification starting : FILE = /u01/app/oracle/oradata/prod/users01.dbf
DBVERIFY - Verification complete
Total Pages Examined : 12800
Total Pages Processed (Data) : 763
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 2
Total Pages Failing (Index): 0
Total Pages Processed (Other): 12025
Total Pages Processed (Seg) : 0
Total Pages Failing (Seg) : 0
Total Pages Empty : 10
Total Pages Marked Corrupt : 0
Total Pages Influx : 0
Total Pages Encrypted : 0
Highest block SCN : 2066716 (0.2066716)
[oracle@rh7 ~]$4、查看告警日志信息
告警日志：
dbv校验生成的日志：
Reading datafile '/u01/app/oracle/oradata/prod/users01.dbf' for corruption at rdba: 0x010000aa (file 4, block 170)
Reread (file 4, block 170) found same corrupt data
Corrupt Block Found
TSN = 4, TSNAME = USERS
RFN = 4, BLK = 170, RDBA = 16777386
OBJN = -1, OBJD = 75131, OBJECT = USERS, SUBOBJECT =
SEGMENT OWNER = , SEGMENT TYPE = Temporary Segment
Tue Jul 15 14:00:25 2014
Trace dumping is performing id=[cdmp_20140715140025]
Tue Jul 15 14:00:25 2014
Errors in file /u01/app/oracle/diag/rdbms/prod/prod/trace/prod_m000_8954.trc (incident=121488):
ORA-01578: ORACLE data block corrupted (file # 4, block # 170)
ORA-01110: data file 4: '/u01/app/oracle/oradata/prod/users01.dbf'
Hex dump of (file 4, block 176) in trace file /u01/app/oracle/diag/rdbms/prod/prod/incident/incdir_121443/prod_m000_8954_i121443_a.trc
Corrupt block relative dba: 0x010000b0 (file 4, block 176)
Bad header found during validation
Data in bad block:
type: 6 format: 2 rdba: 0x012020b0
last change scn: 0x2020.201e6219 seq: 0x1 flg: 0x04
spare1: 0x20 spare2: 0x20 spare3: 0x2020
consistency value in tail: 0x62190601
check value in block header: 0x2185
computed block checksum: 0x2020
Reread of blocknum=176, file=/u01/app/oracle/oradata/prod/users01.dbf. found same corrupt data
Reread of blocknum=176, file=/u01/app/oracle/oradata/prod/users01.dbf. found same corrupt data
Reread of blocknum=176, file=/u01/app/oracle/oradata/prod/users01.dbf. found same corrupt data
Reread of blocknum=176, file=/u01/app/oracle/oradata/prod/users01.dbf. found same corrupt data
Reread of blocknum=176, file=/u01/app/oracle/oradata/prod/users01.dbf. found same corrupt data
Hex dump of (file 4, block 170) in trace file /u01/app/oracle/diag/rdbms/prod/prod/incident/incdir_121443/prod_m000_8954_i121443_a.trc
Corrupt block relative dba: 0x010000aa (file 4, block 170)
Bad check value found during buffer read
Data in bad block:
type: 35 format: 2 rdba: 0x010000aa
last change scn: 0x0000.001f891c seq: 0x2 flg: 0x04
spare1: 0x0 spare2: 0x0 spare3: 0x0
consistency value in tail: 0x891c2302
check value in block header: 0x8eee
computed block checksum: 0x2020
Reading datafile '/u01/app/oracle/oradata/prod/users01.dbf' for corruption at rdba: 0x010000aa (file 4, block 170)
Reread (file 4, block 170) found same corrupt data
Corrupt Block Found
TSN = 4, TSNAME = USERS
RFN = 4, BLK = 170, RDBA = 16777386
OBJN = -1, OBJD = 75131, OBJECT = USERS, SUBOBJECT =
SEGMENT OWNER = , SEGMENT TYPE = Temporary Segment
Errors in file /u01/app/oracle/diag/rdbms/prod/prod/trace/prod_m000_8954.trc (incident=121489):
ORA-01578: ORACLE data block corrupted (file # 4, block # 170)
ORA-01110: data file 4: '/u01/app/oracle/oradata/prod/users01.dbf'
Checker run found 7 new persistent data failures
Tue Jul 15 14:01:15 2014
Sweep [inc][121489]: completed
Sweep [inc][121488]: completed
Sweep [inc][121487]: completed
Sweep [inc][121486]: completed
Sweep [inc][121485]: completed
Sweep [inc][121484]: completed
Sweep [inc][121483]: completed
Sweep [inc2][121486]: completed
Sweep [inc2][121485]: completed
Sweep [inc2][121484]: completed
Sweep [inc2][121483]: completed
Sweep [inc2][121443]: completed
Tue Jul 15 14:03:20 2014
alter database recover datafile list clear
Completed: alter database recover datafile list clearrman recovery的日志：
Started Block Media Recovery
Media Recovery Log /dsk4/arch2/arch_1_17_851265252.log
Recovery of Online Redo Log: Thread 1 Group 3 Seq 18 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo03a.log
Mem# 1: /dsk2/oradata/prod/redo03b.log
Recovery of Online Redo Log: Thread 1 Group 1 Seq 19 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo01a.log
Mem# 1: /dsk2/oradata/prod/redo01b.log
Recovery of Online Redo Log: Thread 1 Group 2 Seq 20 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo02a.log
Mem# 1: /dsk2/oradata/prod/redo02b.log
Completed Block Media Recovery
Tue Jul 15 14:10:26 2014
alter database recover datafile list clear
Completed: alter database recover datafile list clear
Started Block Media Recovery
Media Recovery Log /dsk4/arch2/arch_1_17_851265252.log
Recovery of Online Redo Log: Thread 1 Group 3 Seq 18 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo03a.log
Mem# 1: /dsk2/oradata/prod/redo03b.log
Recovery of Online Redo Log: Thread 1 Group 1 Seq 19 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo01a.log
Mem# 1: /dsk2/oradata/prod/redo01b.log
Recovery of Online Redo Log: Thread 1 Group 2 Seq 20 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo02a.log
Mem# 1: /dsk2/oradata/prod/redo02b.log
Completed Block Media Recovery
Tue Jul 15 14:13:28 2014
alter database recover datafile list clear
Completed: alter database recover datafile list clear
Started Block Media Recovery
Media Recovery Log /dsk4/arch2/arch_1_17_851265252.log
Recovery of Online Redo Log: Thread 1 Group 3 Seq 18 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo03a.log
Mem# 1: /dsk2/oradata/prod/redo03b.log
Recovery of Online Redo Log: Thread 1 Group 1 Seq 19 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo01a.log
Mem# 1: /dsk2/oradata/prod/redo01b.log
Recovery of Online Redo Log: Thread 1 Group 2 Seq 20 Reading mem 0
Mem# 0: /dsk1/oradata/prod/redo02a.log
Mem# 1: /dsk2/oradata/prod/redo02b.log
Completed Block Media Recovery@至此，数据块恢复完成！
