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标题: 利用BBED恢复数据文件头 [打印本页]

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作者: 郑全    时间: 2015-6-29 15:36
标题: 利用BBED恢复数据文件头
利用BBED模拟损坏5文件1号块（文件头）

[html] view plaincopyprint?

1. BBED> copy file 4 block 4 to file 5 block 1  
2.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
3.  Block: 1                Offsets:    0 to   19           Dba:0x01400001  
4. ------------------------------------------------------------------------  
5.  1ea20000 04000001 1a4b0000 00000104 99810000   
6.   
7.  <32 bytes per line>  
8.   
9.   
10. sys@PROD> shutdown abort;  
11. ORACLE instance shut down.  
12. sys@PROD> starup  
13. SP2-0042: unknown command "starup" - rest of line ignored.  
14. sys@PROD> startup  
15. ORACLE instance started.  
16. Total System Global Area  939495424 bytes  
17. Fixed Size                  2233960 bytes  
18. Variable Size             251660696 bytes  
19. Database Buffers          679477248 bytes  
20. Redo Buffers                6123520 bytes  
21. Database mounted.  
22. ORA-01122: database file 5 failed verification check  
23. ORA-01110: data file 5: '/u01/app/oracle/oradata/PROD/tp01.dbf'  
24. ORA-01210: data file header is media corrupt  

BBED> copy file 4 block 4 to file 5 block 1
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:    0 to   19           Dba:0x01400001
------------------------------------------------------------------------
 1ea20000 04000001 1a4b0000 00000104 99810000 

 <32 bytes per line>


sys@PROD> shutdown abort;
ORACLE instance shut down.
sys@PROD> starup
SP2-0042: unknown command "starup" - rest of line ignored.
sys@PROD> startup
ORACLE instance started.
Total System Global Area  939495424 bytes
Fixed Size                  2233960 bytes
Variable Size             251660696 bytes
Database Buffers          679477248 bytes
Redo Buffers                6123520 bytes
Database mounted.
ORA-01122: database file 5 failed verification check
ORA-01110: data file 5: '/u01/app/oracle/oradata/PROD/tp01.dbf'
ORA-01210: data file header is media corrupt

BBED开始恢复

1、找个文件头覆盖

[html] view plaincopyprint?

1. BBED> copy file 4 block 1 to file 5 block 1  
2.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
3.  Block: 1                Offsets:    0 to   19           Dba:0x01400001  
4. ------------------------------------------------------------------------  
5.  0ba20000 01000001 00000000 00000104 edbc0000   
6.   
7.  <32 bytes per line>  

BBED> copy file 4 block 1 to file 5 block 1
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:    0 to   19           Dba:0x01400001
------------------------------------------------------------------------
 0ba20000 01000001 00000000 00000104 edbc0000 

 <32 bytes per line>

2、进入5文件1号块

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1. BBED> set file 5 block 1  
2.         FILE#           5  
3.         BLOCK#          1  

BBED> set file 5 block 1
        FILE#           5
        BLOCK#          1

（1）改块的地址5文件1号块，rdba_kcbh

[html] view plaincopyprint?

1. BBED> p kcvfhbfh  
2. struct kcvfhbfh, 20 bytes                   @0         
3.    ub1 type_kcbh                            @0        0x0b  
4.    ub1 frmt_kcbh                            @1        0xa2  
5.    ub1 spare1_kcbh                          @2        0x00  
6.    ub1 spare2_kcbh                          @3        0x00  
7.    ub4 rdba_kcbh                            @4        0x01000001  
8.    ub4 bas_kcbh                             @8        0x00000000  
9.    ub2 wrp_kcbh                             @12       0x0000  
10.    ub1 seq_kcbh                             @14       0x01  
11.    ub1 flg_kcbh                             @15       0x04 (KCBHFCKV)  
12.    ub2 chkval_kcbh                          @16       0xbced  
13.    ub2 spare3_kcbh                          @18       0x0000  

BBED> p kcvfhbfh
struct kcvfhbfh, 20 bytes                   @0       
   ub1 type_kcbh                            @0        0x0b
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x01000001
   ub4 bas_kcbh                             @8        0x00000000
   ub2 wrp_kcbh                             @12       0x0000
   ub1 seq_kcbh                             @14       0x01
   ub1 flg_kcbh                             @15       0x04 (KCBHFCKV)
   ub2 chkval_kcbh                          @16       0xbced
   ub2 spare3_kcbh                          @18       0x0000

0x01000001===》0000 0001 0000==》100==》4号文件1号块
修改成5号1块 ===》0x01400001

[html] view plaincopyprint?

1. BBED> d /v offset 4  
2.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
3.  Block: 1       Offsets:    4 to   23  Dba:0x01400001  
4. -------------------------------------------------------  
5.  01000001 00000000 00000104 edbc0000 l ............í?..  
6.  00000000      
7. BBED> m /x  01004001 offset 4  
8.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
9.  Block: 1                Offsets:    4 to   23           Dba:0x01400001  
10. ------------------------------------------------------------------------  
11.  01004001 00000000 00000104 edbc0000 00000000   

BBED> d /v offset 4
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:    4 to   23  Dba:0x01400001
-------------------------------------------------------
 01000001 00000000 00000104 edbc0000 l ............í?..
 00000000    
BBED> m /x  01004001 offset 4
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:    4 to   23           Dba:0x01400001
------------------------------------------------------------------------
 01004001 00000000 00000104 edbc0000 00000000 

(2)文件的大小kccfhfsz

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1. BBED> p kcvfhhdr  
2. struct kcvfhhdr, 76 bytes                   @20        
3.    ub4 kccfhswv                             @20       0x00000000  
4.    ub4 kccfhcvn                             @24       0x0b200000  
5.    ub4 kccfhdbi                             @28       0x0f302c3e  
6.    text kccfhdbn[0]                         @32      P  
7.    text kccfhdbn[1]                         @33      R  
8.    text kccfhdbn[2]                         @34      O  
9.    text kccfhdbn[3]                         @35      D  
10.    text kccfhdbn[4]                         @36         
11.    text kccfhdbn[5]                         @37         
12.    text kccfhdbn[6]                         @38         
13.    text kccfhdbn[7]                         @39         
14.    ub4 kccfhcsq                             @40       0x00000d3d  
15.    ub4 kccfhfsz                             @44       0x00003200  
16.    s_blkz kccfhbsz                          @48       0x00  
17.    ub2 kccfhfno                             @52       0x0004  
18.    ub2 kccfhtyp                             @54       0x0003  
19.    ub4 kccfhacid                            @56       0x00000000  
20.    ub4 kccfhcks                             @60       0x00000000  
21.    text kccfhtag[0]                         @64         
22.  ....................      
23. sys@PROD> select name from v$dbfile where file#=5;  
24.   
25. NAME  
26. --------------------------------------------------  
27. /u01/app/oracle/oradata/PROD/tp01.dbf  
28.   
29. [oracle@jfdb PROD]$ ls -lFtr |grep tp01  
30. -rw-r-----. 1 oracle oinstall  524296192 Jun  8 18:58 tp01.dbf  
31.   
32. sys@PROD> select 524296192/8192 from dual;  
33.   
34. 524296192/8192  
35. --------------  
36.          64001  

BBED> p kcvfhhdr
struct kcvfhhdr, 76 bytes                   @20      
   ub4 kccfhswv                             @20       0x00000000
   ub4 kccfhcvn                             @24       0x0b200000
   ub4 kccfhdbi                             @28       0x0f302c3e
   text kccfhdbn[0]                         @32      P
   text kccfhdbn[1]                         @33      R
   text kccfhdbn[2]                         @34      O
   text kccfhdbn[3]                         @35      D
   text kccfhdbn[4]                         @36       
   text kccfhdbn[5]                         @37       
   text kccfhdbn[6]                         @38       
   text kccfhdbn[7]                         @39       
   ub4 kccfhcsq                             @40       0x00000d3d
   ub4 kccfhfsz                             @44       0x00003200
   s_blkz kccfhbsz                          @48       0x00
   ub2 kccfhfno                             @52       0x0004
   ub2 kccfhtyp                             @54       0x0003
   ub4 kccfhacid                            @56       0x00000000
   ub4 kccfhcks                             @60       0x00000000
   text kccfhtag[0]                         @64       
 ....................    
sys@PROD> select name from v$dbfile where file#=5;

NAME
--------------------------------------------------
/u01/app/oracle/oradata/PROD/tp01.dbf

[oracle@jfdb PROD]$ ls -lFtr |grep tp01
-rw-r-----. 1 oracle oinstall  524296192 Jun  8 18:58 tp01.dbf

sys@PROD> select 524296192/8192 from dual;

524296192/8192
--------------
         64001

注：0号块他是操作系头不为ORACLE所控制
64001-1=64000个块（10进制）

64000（10）==fa00(16)=====>bbed存储：00fa0000

[html] view plaincopyprint?

1. BBED> d /v offset 44  
2.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
3.  Block: 1       Offsets:   44 to   63  Dba:0x01400001  
4. -------------------------------------------------------  
5.  00320000 00200000 04000300 00000000 l .2... ..........  
6.  00000000   
7. BBED> m /x 00fa0000 44  
8.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
9.  Block: 1                Offsets:   44 to   63           Dba:0x01400001  
10. ------------------------------------------------------------------------  
11.  00fa0000 00200000 04000300 00000000 00000000   

BBED> d /v offset 44
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:   44 to   63  Dba:0x01400001
-------------------------------------------------------
 00320000 00200000 04000300 00000000 l .2... ..........
 00000000 
BBED> m /x 00fa0000 44
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:   44 to   63           Dba:0x01400001
------------------------------------------------------------------------
 00fa0000 00200000 04000300 00000000 00000000 

(3)修改文件号（4--->5）

ub2 kccfhfno                          @52       0x0004

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1. BBED> d /v offset 52  
2.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
3.  Block: 1       Offsets:   52 to   71  Dba:0x01400001  
4. -------------------------------------------------------  
5.  04000300 00000000 00000000 00000000 l ................  
6.  00000000   
7.   
8. BBED> m /x 05 offset 52  
9.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
10.  Block: 1                Offsets:   52 to   71           Dba:0x01400001  
11. ------------------------------------------------------------------------  
12.  05000300 00000000 00000000 00000000 00000000   

BBED> d /v offset 52
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:   52 to   71  Dba:0x01400001
-------------------------------------------------------
 04000300 00000000 00000000 00000000 l ................
 00000000 

BBED> m /x 05 offset 52
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:   52 to   71           Dba:0x01400001
------------------------------------------------------------------------
 05000300 00000000 00000000 00000000 00000000 

(4)修改文件创建时SCN

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1. BBED> p kcvfhcrs  
2. struct kcvfhcrs, 8 bytes                    @100       
3.    ub4 kscnbas                              @100      0x00004b14  
4.    ub2 kscnwrp                              @104      0x0000  
5.   
6.   
7. sys@PROD> select file#,CREATION_CHANGE# from v$datafile where file#=5;  
8.   
9.      FILE# CREATION_CHANGE#  
10. ---------- ----------------  
11.          5           363921  
12.   
13. sys@PROD> select to_char('363921','xxxxxxxxxxxxx') from dual;  
14.   
15. TO_CHAR('36392  
16. --------------  
17.          58d91   ===（倒：918d0500）==》00058d91  
18.   
19. BBED> d /v offset 100  
20.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
21.  Block: 1       Offsets:  100 to  119  Dba:0x01400001  
22. -------------------------------------------------------  
23.  144b0000 00000000 30cf3e32 a41da532 l .K......0?>2¤.￥2  
24.  ec4f1900  
25.   
26.   
27. BBED> m /x 918d offset 100  
28.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
29.  Block: 1                Offsets:  100 to  119           Dba:0x01400001  
30. ------------------------------------------------------------------------  
31.  918d0000 00000000 30cf3e32 a41da532 ec4f1900   
32.   
33. BBED>  m /x 0500 offset 102  
34.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
35.  Block: 1                Offsets:  102 to  121           Dba:0x01400001  
36. ------------------------------------------------------------------------  
37.  05000000 000030cf 3e32a41d a532ec4f 19000000   
38.   
39. BBED> d /v offset 100  
40.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
41.  Block: 1       Offsets:  100 to  119  Dba:0x01400001  
42. -------------------------------------------------------  
43.  918d0500 00000000 30cf3e32 a41da532 l ........0?>2¤.￥2  
44.  ec4f1900  

BBED> p kcvfhcrs
struct kcvfhcrs, 8 bytes                    @100     
   ub4 kscnbas                              @100      0x00004b14
   ub2 kscnwrp                              @104      0x0000


sys@PROD> select file#,CREATION_CHANGE# from v$datafile where file#=5;

     FILE# CREATION_CHANGE#
---------- ----------------
         5           363921

sys@PROD> select to_char('363921','xxxxxxxxxxxxx') from dual;

TO_CHAR('36392
--------------
         58d91   ===（倒：918d0500）==》00058d91

BBED> d /v offset 100
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  100 to  119  Dba:0x01400001
-------------------------------------------------------
 144b0000 00000000 30cf3e32 a41da532 l .K......0?>2¤.￥2
 ec4f1900


BBED> m /x 918d offset 100
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  100 to  119           Dba:0x01400001
------------------------------------------------------------------------
 918d0000 00000000 30cf3e32 a41da532 ec4f1900 

BBED>  m /x 0500 offset 102
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  102 to  121           Dba:0x01400001
------------------------------------------------------------------------
 05000000 000030cf 3e32a41d a532ec4f 19000000 

BBED> d /v offset 100
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  100 to  119  Dba:0x01400001
-------------------------------------------------------
 918d0500 00000000 30cf3e32 a41da532 l ........0?>2¤.￥2
 ec4f1900

(5)修改文件创建时间

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1. ub4 kcvfhcrt                             @108      0x323ecf30  
2. BBED> p kcvfhcrt  
3. ub4 kcvfhcrt                                @108      0x323ecf30  
4.   
5. sys@PROD> select file#,to_char(CREATION_TIME,'yyyy-mm-dd hh24:mi:ss') createTime,  
6.   2      (to_char(CREATION_TIME,'yyyy')-1988)*12*31*24*3600+  
7.   3       (to_char(CREATION_TIME,'mm')-1)*31*24*3600+  
8.   4     (to_char(CREATION_TIME,'dd')-1)*24*3600+  
9.   5     to_char(CREATION_TIME,'hh24')*3600+  
10.   6     to_char(CREATION_TIME,'mi')*60+  
11.   7     to_char(CREATION_TIME,'ss') createTimeSCN  
12.   8    from v$datafile WHERE file# in(4,5);  
13.   
14.      FILE# CREATETIME          CREATETIMESCN  
15. ---------- ------------------- -------------  
16.          4 2014-03-23 16:17:52     842977072  
17.          5 2014-03-29 10:32:22     843474742  
18.   
19.   
20. sys@PROD> select '4' file#, to_char('842977072','xxxxxxxxxxxxxx') from dual;  
21.   
22. F TO_CHAR('842977  
23. - ---------------  
24. 4        323ecf30    ===>倒：30cf3e32  
25.   
26.   
27. sys@PROD> select '5' file#,to_char('843474742','xxxxxxxxxxxxxx') from dual;  
28.   
29. sys@PROD>  select '5' file#,to_char('843474742','xxxxxxxxxxxxxx') from dual;  
30.   
31. F TO_CHAR('843474  
32. - ---------------  
33. 5        32466736  ==》36674632  
34.   
35. BBED> d /v offset 108  
36.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
37.  Block: 1       Offsets:  108 to  127  Dba:0x01400001  
38. -------------------------------------------------------  
39.  30cf3e32 a41da532 ec4f1900 00000000 l 0?>2¤.￥2ìO......  
40.  d713a532  
41.   
42. BBED> m /x 36674632 offset 108  
43.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
44.  Block: 1                Offsets:  108 to  127           Dba:0x01400001  
45. ------------------------------------------------------------------------  
46.  36674632 a41da532 ec4f1900 00000000 d713a532   

ub4 kcvfhcrt                             @108      0x323ecf30
BBED> p kcvfhcrt
ub4 kcvfhcrt                                @108      0x323ecf30

sys@PROD> select file#,to_char(CREATION_TIME,'yyyy-mm-dd hh24:mi:ss') createTime,
  2      (to_char(CREATION_TIME,'yyyy')-1988)*12*31*24*3600+
  3       (to_char(CREATION_TIME,'mm')-1)*31*24*3600+
  4     (to_char(CREATION_TIME,'dd')-1)*24*3600+
  5     to_char(CREATION_TIME,'hh24')*3600+
  6     to_char(CREATION_TIME,'mi')*60+
  7     to_char(CREATION_TIME,'ss') createTimeSCN
  8    from v$datafile WHERE file# in(4,5);

     FILE# CREATETIME          CREATETIMESCN
---------- ------------------- -------------
         4 2014-03-23 16:17:52     842977072
         5 2014-03-29 10:32:22     843474742


sys@PROD> select '4' file#, to_char('842977072','xxxxxxxxxxxxxx') from dual;

F TO_CHAR('842977
- ---------------
4        323ecf30    ===>倒：30cf3e32


sys@PROD> select '5' file#,to_char('843474742','xxxxxxxxxxxxxx') from dual;

sys@PROD>  select '5' file#,to_char('843474742','xxxxxxxxxxxxxx') from dual;

F TO_CHAR('843474
- ---------------
5        32466736  ==》36674632

BBED> d /v offset 108
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  108 to  127  Dba:0x01400001
-------------------------------------------------------
 30cf3e32 a41da532 ec4f1900 00000000 l 0?>2¤.￥2ìO......
 d713a532

BBED> m /x 36674632 offset 108
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  108 to  127           Dba:0x01400001
------------------------------------------------------------------------
 36674632 a41da532 ec4f1900 00000000 d713a532 

(6)修改表空间号

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1. sword kcvfhtsn                           @332      4  
2.   
3. sys@PROD> select file#,TS# from  v$datafile where file# in(4,5);  
4.   
5.      FILE#        TS#  
6. ---------- ----------  
7.          4          4  
8.          5          5  
9.   
10. BBED> d /v offset 332  
11.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
12.  Block: 1       Offsets:  332 to  351  Dba:0x01400001  
13. -------------------------------------------------------  
14.  04000000 05005553 45525300 00000000 l ......USERS.....  
15.  00000000                            l ....  
16.   
17.  <16 bytes per line>  
18.   
19. BBED> m /x 05 offset 332  
20.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
21.  Block: 1                Offsets:  332 to  351           Dba:0x01400001  
22. ------------------------------------------------------------------------  
23.  05000000 05005553 45525300 00000000 00000000   

sword kcvfhtsn                           @332      4

sys@PROD> select file#,TS# from  v$datafile where file# in(4,5);

     FILE#        TS#
---------- ----------
         4          4
         5          5

BBED> d /v offset 332
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  332 to  351  Dba:0x01400001
-------------------------------------------------------
 04000000 05005553 45525300 00000000 l ......USERS.....
 00000000                            l ....

 <16 bytes per line>

BBED> m /x 05 offset 332
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  332 to  351           Dba:0x01400001
------------------------------------------------------------------------
 05000000 05005553 45525300 00000000 00000000 

(7)修改相对文件号

ub4 kcvfhrfn                             @368      0x00000004

[html] view plaincopyprint?

1. BBED> d /v offset 368  
2.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
3.  Block: 1       Offsets:  368 to  387  Dba:0x01400001  
4. -------------------------------------------------------  
5.  04000000 00000000 00000000 00000000 l ................  
6.  00000000                            l ....  
7.   
8.  <16 bytes per line>  
9.   
10. BBED> m /x 05 offset 368  
11.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
12.  Block: 1                Offsets:  368 to  387           Dba:0x01400001  
13. ------------------------------------------------------------------------  
14.  05000000 00000000 00000000 00000000 00000000   

BBED> d /v offset 368
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  368 to  387  Dba:0x01400001
-------------------------------------------------------
 04000000 00000000 00000000 00000000 l ................
 00000000                            l ....

 <16 bytes per line>

BBED> m /x 05 offset 368
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  368 to  387           Dba:0x01400001
------------------------------------------------------------------------
 05000000 00000000 00000000 00000000 00000000 

(8)修改表空间的名称

[html] view plaincopyprint?

1. BBED> p kcvfhtnm  
2. text kcvfhtnm[0]                            @338     U  
3. text kcvfhtnm[1]                            @339     S  
4. text kcvfhtnm[2]                            @340     E  
5. text kcvfhtnm[3]                            @341     R  
6. text kcvfhtnm[4]                            @342     S  
7. text kcvfhtnm[5]                            @343        
8. text kcvfhtnm[6]                            @344        
9. text kcvfhtnm[7]                            @345        
10. text kcvfhtnm[8]                            @346        
11. text kcvfhtnm[9]                            @347        
12. text kcvfhtnm[10]                           @348        
13. text kcvfhtnm[11]                           @349        
14. text kcvfhtnm[12]                           @350   
15.   
16. sys@PROD> select file#,TS# from  v$datafile where file# in(4,5);  
17.   
18.      FILE#        TS#  
19. ---------- ----------  
20.          4          4  
21.          5          5  
22.   
23. sys@PROD> select TS#,NAME from v$tablespace where ts# in(4,5);  
24.   
25.        TS# NAME  
26. ---------- --------------------------------------------------  
27.          4 USERS  
28.          5 TP1  
29.   
30. BBED> d /v offset 338  
31.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
32.  Block: 1       Offsets:  338 to  357  Dba:0x01400001  
33. -------------------------------------------------------  
34.  55534552 53000000 00000000 00000000 l USERS...........  
35.  00000000  
36.   
37. sys@PROD> select dump('USERS',16) from dual;  
38.   
39. DUMP('USERS',16)  
40. ----------------------------  
41. Typ=96 Len=5: 55,53,45,52,53  
42.   
43.   
44. sys@PROD> select dump('TP1',16) from dual;  
45.   
46. DUMP('TP1',16)  
47. ----------------------  
48. Typ=96 Len=3: 54,50,31  
49.   
50. BBED> m /x 54503100 offset 338  
51.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
52.  Block: 1                Offsets:  338 to  357           Dba:0x01400001  
53. ------------------------------------------------------------------------  
54.  54503100 53000000 00000000 00000000 00000000   
55.   
56.  <32 bytes per line>  
57.   
58. BBED> m /x 00 offset 342  
59.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
60.  Block: 1                Offsets:  342 to  361           Dba:0x01400001  
61. ------------------------------------------------------------------------  
62.  00000000 00000000 00000000 00000000 00000000   
63.   
64.  <32 bytes per line>  
65.   
66. BBED> d /v offset 338  
67.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
68.  Block: 1       Offsets:  338 to  357  Dba:0x01400001  
69. -------------------------------------------------------  
70.  54503100 00000000 00000000 00000000 l TP1.............  
71.  00000000           

BBED> p kcvfhtnm
text kcvfhtnm[0]                            @338     U
text kcvfhtnm[1]                            @339     S
text kcvfhtnm[2]                            @340     E
text kcvfhtnm[3]                            @341     R
text kcvfhtnm[4]                            @342     S
text kcvfhtnm[5]                            @343      
text kcvfhtnm[6]                            @344      
text kcvfhtnm[7]                            @345      
text kcvfhtnm[8]                            @346      
text kcvfhtnm[9]                            @347      
text kcvfhtnm[10]                           @348      
text kcvfhtnm[11]                           @349      
text kcvfhtnm[12]                           @350 

sys@PROD> select file#,TS# from  v$datafile where file# in(4,5);

     FILE#        TS#
---------- ----------
         4          4
         5          5

sys@PROD> select TS#,NAME from v$tablespace where ts# in(4,5);

       TS# NAME
---------- --------------------------------------------------
         4 USERS
         5 TP1

BBED> d /v offset 338
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  338 to  357  Dba:0x01400001
-------------------------------------------------------
 55534552 53000000 00000000 00000000 l USERS...........
 00000000

sys@PROD> select dump('USERS',16) from dual;

DUMP('USERS',16)
----------------------------
Typ=96 Len=5: 55,53,45,52,53


sys@PROD> select dump('TP1',16) from dual;

DUMP('TP1',16)
----------------------
Typ=96 Len=3: 54,50,31

BBED> m /x 54503100 offset 338
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  338 to  357           Dba:0x01400001
------------------------------------------------------------------------
 54503100 53000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> m /x 00 offset 342
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  342 to  361           Dba:0x01400001
------------------------------------------------------------------------
 00000000 00000000 00000000 00000000 00000000 

 <32 bytes per line>

BBED> d /v offset 338
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  338 to  357  Dba:0x01400001
-------------------------------------------------------
 54503100 00000000 00000000 00000000 l TP1.............
 00000000         

(9)修改表空间的长度

ub2 kcvfhtln                             @336      0x0005

[html] view plaincopyprint?

1. BBED> d /v offset 336  
2.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
3.  Block: 1       Offsets:  336 to  355  Dba:0x01400001  
4. -------------------------------------------------------  
5.  05005450 31000000 00000000 00000000 l ..TP1...........  
6.  00000000                            l ....  
7.   
8.  <16 bytes per line>  
9.   
10. BBED> m /x 03 offset 336  
11.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
12.  Block: 1                Offsets:  336 to  355           Dba:0x01400001  
13. ------------------------------------------------------------------------  
14.  03005450 31000000 00000000 00000000 00000000   
15.   
16.  <32 bytes per line>  

BBED> d /v offset 336
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  336 to  355  Dba:0x01400001
-------------------------------------------------------
 05005450 31000000 00000000 00000000 l ..TP1...........
 00000000                            l ....

 <16 bytes per line>

BBED> m /x 03 offset 336
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  336 to  355           Dba:0x01400001
------------------------------------------------------------------------
 03005450 31000000 00000000 00000000 00000000 

 <32 bytes per line>

(10)检查点

[html] view plaincopyprint?

1. BBED> p kcvfhckp  
2. struct kcvfhckp, 36 bytes                   @484       
3.    struct kcvcpscn, 8 bytes                 @484       
4.       ub4 kscnbas                           @484      0x0019b1a1   --->1683873  
5.       ub2 kscnwrp                           @488      0x0000  
6.    ub4 kcvcptim                             @492      0x32a59921   -->849713441  
7.    ub2 kcvcpthr                             @496      0x0001  
8.    union u, 12 bytes                        @500       
9.       struct kcvcprba, 12 bytes             @500       
10.          ub4 kcrbaseq                       @500      0x00000002  
11.          ub4 kcrbabno                       @504      0x000002e0  
12.          ub2 kcrbabof                       @508      0x0010  
13.    ub1 kcvcpetb[0]                          @512      0x02  
14.    ub1 kcvcpetb[1]                          @513      0x00  
15.    ub1 kcvcpetb[2]                          @514      0x00  
16.    ub1 kcvcpetb[3]                          @515      0x00  
17.    ub1 kcvcpetb[4]                          @516      0x00  
18.    ub1 kcvcpetb[5]                          @517      0x00  
19.    ub1 kcvcpetb[6]                          @518      0x00  
20.    ub1 kcvcpetb[7]                          @519      0x00  
21.   
22. sys@PROD> select file#,rfile#,CREATION_TIME,checkpoint_change#,unrecoverable_change#,offline_change# from v$datafile;  
23.   
24.      FILE#     RFILE# CREATION_ CHECKPOINT_CHANGE# UNRECOVERABLE_CHANGE# OFFLINE_CHANGE#  
25. ---------- ---------- --------- ------------------ --------------------- ---------------  
26.          1          1 23-MAR-14            1683873                     0         1658859  
27.          2          2 23-MAR-14            1683873                     0         1658859  
28.          3          3 23-MAR-14            1683873                     0         1658859  
29.          4          4 23-MAR-14            1683873                     0         1658859  
30.          5          5 29-MAR-14            1684251                     0         1658859  
31.   
32. sys@PROD> select to_number('19b1a1','xxxxxxxxxxxx') from dual;  
33.   
34. TO_NUMBER('19B1A1','XXXXXXXXXXXX')  
35. ----------------------------------  
36.                            1683873  
37. sys@PROD> select to_number('32a59921','xxxxxxxxxxxx') from dual;  
38.   
39. TO_NUMBER('32A59921','XXXXXXXXXXXX')  
40. ------------------------------------  
41.                            849713441  
42. sys@PROD> select file#,to_char(CHECKPOINT_TIME,'yyyy-mm-dd hh24:mi:ss') createTime,  
43.   2    (to_char(CHECKPOINT_TIME,'yyyy')-1988)*12*31*24*3600+  
44.   3     (to_char(CHECKPOINT_TIME,'mm')-1)*31*24*3600+  
45.   4   (to_char(CHECKPOINT_TIME,'dd')-1)*24*3600+  
46.   5   to_char(CHECKPOINT_TIME,'hh24')*3600+  
47.   6    to_char(CHECKPOINT_TIME,'mi')*60+  
48.   7   to_char(CHECKPOINT_TIME,'ss') createTimeSCN  
49.   8    from v$datafile WHERE file# in(4,5);  
50.   
51.   
52.      FILE# CREATETIME          CREATETIMESCN  
53. ---------- ------------------- -------------  
54.          4 2014-06-08 15:30:41     849713441  
55.          5 2014-06-08 15:38:33     849713913  
56.   
57. sys@PROD> sys@PROD> select to_char('1684251','xxxxxxxxxxxxxxx') from dual;  
58.   
59. TO_CHAR('1684251  
60. ----------------  
61.           19b31b   ====>真正5号文件的检查点SCN  
62.   
63. sys@PROD> select to_char('849713913','xxxxxxxxxxxxxxx') from dual;  
64.   
65. TO_CHAR('8497139  
66. ----------------  
67.         32a59af9  ====>真正5号文件的检查点时间  
68.   
69. ub4 kscnbas                           @484      0x0019b1a1     ====>真正5号文件的检查点SCN 19b31b (倒：1bb319)  
70. ub4 kcvcptim                          @492      0x32a59921     ====>真正5号文件的检查点时间32a59af9（倒：f99aa532）  
71.   
72. BBED> d /v offset 484  
73.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
74.  Block: 1       Offsets:  484 to  503  Dba:0x01400001  
75. -------------------------------------------------------  
76.  a1b11900 00000000 2199a532 01000000 l ?±......!.￥2....  
77.  02000000   
78.   
79. BBED> m /x 1bb319 offset 484  
80.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
81.  Block: 1                Offsets:  484 to  503           Dba:0x01400001  
82. ------------------------------------------------------------------------  
83.  1bb31900 00000000 2199a532 01000000 02000000   
84.   
85. BBED> d /v offset 492  
86.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
87.  Block: 1       Offsets:  492 to  511  Dba:0x01400001  
88. -------------------------------------------------------  
89.  2199a532 01000000 02000000 e0020000 l !.￥2........à...  
90.  10007261   
91.   
92. BBED> m /x f99a offset 492  
93.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
94.  Block: 1                Offsets:  492 to  511           Dba:0x01400001  
95. ------------------------------------------------------------------------  
96.  f99aa532 01000000 02000000 e0020000 10007261   

BBED> p kcvfhckp
struct kcvfhckp, 36 bytes                   @484     
   struct kcvcpscn, 8 bytes                 @484     
      ub4 kscnbas                           @484      0x0019b1a1   --->1683873
      ub2 kscnwrp                           @488      0x0000
   ub4 kcvcptim                             @492      0x32a59921   -->849713441
   ub2 kcvcpthr                             @496      0x0001
   union u, 12 bytes                        @500     
      struct kcvcprba, 12 bytes             @500     
         ub4 kcrbaseq                       @500      0x00000002
         ub4 kcrbabno                       @504      0x000002e0
         ub2 kcrbabof                       @508      0x0010
   ub1 kcvcpetb[0]                          @512      0x02
   ub1 kcvcpetb[1]                          @513      0x00
   ub1 kcvcpetb[2]                          @514      0x00
   ub1 kcvcpetb[3]                          @515      0x00
   ub1 kcvcpetb[4]                          @516      0x00
   ub1 kcvcpetb[5]                          @517      0x00
   ub1 kcvcpetb[6]                          @518      0x00
   ub1 kcvcpetb[7]                          @519      0x00

sys@PROD> select file#,rfile#,CREATION_TIME,checkpoint_change#,unrecoverable_change#,offline_change# from v$datafile;

     FILE#     RFILE# CREATION_ CHECKPOINT_CHANGE# UNRECOVERABLE_CHANGE# OFFLINE_CHANGE#
---------- ---------- --------- ------------------ --------------------- ---------------
         1          1 23-MAR-14            1683873                     0         1658859
         2          2 23-MAR-14            1683873                     0         1658859
         3          3 23-MAR-14            1683873                     0         1658859
         4          4 23-MAR-14            1683873                     0         1658859
         5          5 29-MAR-14            1684251                     0         1658859

sys@PROD> select to_number('19b1a1','xxxxxxxxxxxx') from dual;

TO_NUMBER('19B1A1','XXXXXXXXXXXX')
----------------------------------
                           1683873
sys@PROD> select to_number('32a59921','xxxxxxxxxxxx') from dual;

TO_NUMBER('32A59921','XXXXXXXXXXXX')
------------------------------------
                           849713441
sys@PROD> select file#,to_char(CHECKPOINT_TIME,'yyyy-mm-dd hh24:mi:ss') createTime,
  2    (to_char(CHECKPOINT_TIME,'yyyy')-1988)*12*31*24*3600+
  3     (to_char(CHECKPOINT_TIME,'mm')-1)*31*24*3600+
  4   (to_char(CHECKPOINT_TIME,'dd')-1)*24*3600+
  5   to_char(CHECKPOINT_TIME,'hh24')*3600+
  6    to_char(CHECKPOINT_TIME,'mi')*60+
  7   to_char(CHECKPOINT_TIME,'ss') createTimeSCN
  8    from v$datafile WHERE file# in(4,5);


     FILE# CREATETIME          CREATETIMESCN
---------- ------------------- -------------
         4 2014-06-08 15:30:41     849713441
         5 2014-06-08 15:38:33     849713913

sys@PROD> sys@PROD> select to_char('1684251','xxxxxxxxxxxxxxx') from dual;

TO_CHAR('1684251
----------------
          19b31b   ====>真正5号文件的检查点SCN

sys@PROD> select to_char('849713913','xxxxxxxxxxxxxxx') from dual;

TO_CHAR('8497139
----------------
        32a59af9  ====>真正5号文件的检查点时间

ub4 kscnbas                           @484      0x0019b1a1     ====>真正5号文件的检查点SCN 19b31b (倒：1bb319)
ub4 kcvcptim                          @492      0x32a59921     ====>真正5号文件的检查点时间32a59af9（倒：f99aa532）

BBED> d /v offset 484
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  484 to  503  Dba:0x01400001
-------------------------------------------------------
 a1b11900 00000000 2199a532 01000000 l ?±......!.￥2....
 02000000 

BBED> m /x 1bb319 offset 484
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  484 to  503           Dba:0x01400001
------------------------------------------------------------------------
 1bb31900 00000000 2199a532 01000000 02000000 

BBED> d /v offset 492
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  492 to  511  Dba:0x01400001
-------------------------------------------------------
 2199a532 01000000 02000000 e0020000 l !.￥2........à...
 10007261 

BBED> m /x f99a offset 492
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  492 to  511           Dba:0x01400001
------------------------------------------------------------------------
 f99aa532 01000000 02000000 e0020000 10007261 

##################校验块

[html] view plaincopyprint?

1. BBED> sum apply  
2. Check value for File 5, Block 1:  
3. current = 0x4a10, required = 0x4a10  
4.   
5. BBED> verify  
6. DBVERIFY - Verification starting  
7. FILE = /u01/app/oracle/oradata/PROD/tp01.dbf  
8. BLOCK = 1  
9.   
10.   
11. DBVERIFY - Verification complete  
12.   
13. Total Blocks Examined         : 1  
14. Total Blocks Processed (Data) : 0  
15. Total Blocks Failing   (Data) : 0  
16. Total Blocks Processed (Index): 0  
17. Total Blocks Failing   (Index): 0  
18. Total Blocks Empty            : 0  
19. Total Blocks Marked Corrupt   : 0  
20. Total Blocks Influx           : 0  
21. Message 531 not found;  product=RDBMS; facility=BBED  

BBED> sum apply
Check value for File 5, Block 1:
current = 0x4a10, required = 0x4a10

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/app/oracle/oradata/PROD/tp01.dbf
BLOCK = 1


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing   (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 0
Total Blocks Influx           : 0
Message 531 not found;  product=RDBMS; facility=BBED

######################检查物理坏块

[html] view plaincopyprint?

1. [oracle@jfdb PROD]$ dbv file=tp01.dbf start=1 end=2  
2.   
3. DBVERIFY: Release 11.2.0.3.0 - Production on Sun Jun 8 21:48:37 2014  
4.   
5. Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.  
6.   
7. DBVERIFY - Verification starting : FILE = /u01/app/oracle/oradata/PROD/tp01.dbf  
8.   
9.   
10. DBVERIFY - Verification complete  
11.   
12. Total Pages Examined         : 2  
13. Total Pages Processed (Data) : 0  
14. Total Pages Failing   (Data) : 0  
15. Total Pages Processed (Index): 0  
16. Total Pages Failing   (Index): 0  
17. Total Pages Processed (Other): 2  
18. Total Pages Processed (Seg)  : 0  
19. Total Pages Failing   (Seg)  : 0  
20. Total Pages Empty            : 0  
21. Total Pages Marked Corrupt   : 0  
22. Total Pages Influx           : 0  
23. Total Pages Encrypted        : 0  
24. Highest block SCN            : 1687542 (0.1687542)  

[oracle@jfdb PROD]$ dbv file=tp01.dbf start=1 end=2

DBVERIFY: Release 11.2.0.3.0 - Production on Sun Jun 8 21:48:37 2014

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

DBVERIFY - Verification starting : FILE = /u01/app/oracle/oradata/PROD/tp01.dbf


DBVERIFY - Verification complete

Total Pages Examined         : 2
Total Pages Processed (Data) : 0
Total Pages Failing   (Data) : 0
Total Pages Processed (Index): 0
Total Pages Failing   (Index): 0
Total Pages Processed (Other): 2
Total Pages Processed (Seg)  : 0
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 0
Total Pages Marked Corrupt   : 0
Total Pages Influx           : 0
Total Pages Encrypted        : 0
Highest block SCN            : 1687542 (0.1687542)

############打开数据库报错

[html] view plaincopyprint?

1. sys@PROD> shutdown abort;  
2. ORACLE instance shut down.  
3. sys@PROD> startup  
4. ORACLE instance started.  
5.   
6. Total System Global Area  939495424 bytes  
7. Fixed Size                  2233960 bytes  
8. Variable Size             251660696 bytes  
9. Database Buffers          679477248 bytes  
10. Redo Buffers                6123520 bytes  
11. Database mounted.  
12. ORA-01122: database file 5 failed verification check  
13. ORA-01110: data file 5: '/u01/app/oracle/oradata/PROD/tp01.dbf'  
14. ORA-01207: file is more recent than control file - old control file  

sys@PROD> shutdown abort;
ORACLE instance shut down.
sys@PROD> startup
ORACLE instance started.

Total System Global Area  939495424 bytes
Fixed Size                  2233960 bytes
Variable Size             251660696 bytes
Database Buffers          679477248 bytes
Redo Buffers                6123520 bytes
Database mounted.
ORA-01122: database file 5 failed verification check
ORA-01110: data file 5: '/u01/app/oracle/oradata/PROD/tp01.dbf'
ORA-01207: file is more recent than control file - old control file

###########怀疑检查点计数器，这里我先用BBED（方法1重建控制文件，方法2利用BBED修改计算器）

ub4 kcvfhcpc                             @140      0x00000102
 
ub4 kcvfhccc                             @148      0x00000101

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1. idle> alter session set events 'immediate trace name controlf level 8';  
2.   
3. Session altered.  
4.   
5. DATA FILE #5:   
6.   name #4: /u01/app/oracle/oradata/PROD/tp01.dbf  
7. creation size=0 block size=8192 status=0xe head=4 tail=4 dup=1  
8.  tablespace 5, index=5 krfil=5 prev_file=0  
9.  unrecoverable scn: 0x0000.00000000 01/01/1988 00:00:00  
10.  Checkpoint cnt:226 scn: 0x0000.0019b31b 06/08/2014 15:38:33  
11.  Stop scn: 0xffff.ffffffff 06/08/2014 07:44:07  
12.  Creation Checkpointed at scn:  0x0000.00058d91 03/29/2014 10:32:22  
13.  thread:0 rba:(0x0.0.0)  
14.   
15. sys@PROD> select to_char('226','xxxxxxxxxxxxx') from dual;  
16.   
17. TO_CHAR('226',  
18. --------------  
19.             e2  
20.   
21. sys@PROD> select to_char('225','xxxxxxxxxxxxx') from dual;  
22.   
23. TO_CHAR('225',  
24. --------------  
25.             e1  
26.   
27. BBED> d /v offset 140  
28.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
29.  Block: 1       Offsets:  140 to  159  Dba:0x01400001  
30. -------------------------------------------------------  
31.  02010000 8bc6a532 01010000 b24f1900 l .....?￥2....2O..  
32.  00000000   
33.   
34. BBED> m /x e200 offset 140  
35.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
36.  Block: 1                Offsets:  140 to  159           Dba:0x01400001  
37. ------------------------------------------------------------------------  
38.  e2000000 8bc6a532 01010000 b24f1900 00000000   
39.   
40.  <32 bytes per line>  
41.   
42. BBED> d /v offset 148  
43.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
44.  Block: 1       Offsets:  148 to  167  Dba:0x01400001  
45. -------------------------------------------------------  
46.  01010000 b24f1900 00000000 d713a532 l ....2O......×.￥2  
47.  01000000                            l ....  
48.   
49.  <16 bytes per line>  
50.   
51. BBED> m /x e100 offset 148  
52.  File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)  
53.  Block: 1                Offsets:  148 to  167           Dba:0x01400001  
54. ------------------------------------------------------------------------  
55.  e1000000 b24f1900 00000000 d713a532 01000000   
56.   
57.  <32 bytes per line>  
58.   
59. BBED> sum apply  
60. Check value for File 5, Block 1:  
61. current = 0x4a10, required = 0x4a10  
62.   
63. BBED> verify  
64. DBVERIFY - Verification starting  
65. FILE = /u01/app/oracle/oradata/PROD/tp01.dbf  
66. BLOCK = 1  
67.   
68.   
69. DBVERIFY - Verification complete  
70.   
71. Total Blocks Examined         : 1  
72. Total Blocks Processed (Data) : 0  
73. Total Blocks Failing   (Data) : 0  
74. Total Blocks Processed (Index): 0  
75. Total Blocks Failing   (Index): 0  
76. Total Blocks Empty            : 0  
77. Total Blocks Marked Corrupt   : 0  
78. Total Blocks Influx           : 0  
79. Message 531 not found;  product=RDBMS; facility=BBED  

idle> alter session set events 'immediate trace name controlf level 8';

Session altered.

DATA FILE #5: 
  name #4: /u01/app/oracle/oradata/PROD/tp01.dbf
creation size=0 block size=8192 status=0xe head=4 tail=4 dup=1
 tablespace 5, index=5 krfil=5 prev_file=0
 unrecoverable scn: 0x0000.00000000 01/01/1988 00:00:00
 Checkpoint cnt:226 scn: 0x0000.0019b31b 06/08/2014 15:38:33
 Stop scn: 0xffff.ffffffff 06/08/2014 07:44:07
 Creation Checkpointed at scn:  0x0000.00058d91 03/29/2014 10:32:22
 thread:0 rba:(0x0.0.0)

sys@PROD> select to_char('226','xxxxxxxxxxxxx') from dual;

TO_CHAR('226',
--------------
            e2

sys@PROD> select to_char('225','xxxxxxxxxxxxx') from dual;

TO_CHAR('225',
--------------
            e1

BBED> d /v offset 140
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  140 to  159  Dba:0x01400001
-------------------------------------------------------
 02010000 8bc6a532 01010000 b24f1900 l .....?￥2....2O..
 00000000 

BBED> m /x e200 offset 140
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  140 to  159           Dba:0x01400001
------------------------------------------------------------------------
 e2000000 8bc6a532 01010000 b24f1900 00000000 

 <32 bytes per line>

BBED> d /v offset 148
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1       Offsets:  148 to  167  Dba:0x01400001
-------------------------------------------------------
 01010000 b24f1900 00000000 d713a532 l ....2O......×.￥2
 01000000                            l ....

 <16 bytes per line>

BBED> m /x e100 offset 148
 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
 Block: 1                Offsets:  148 to  167           Dba:0x01400001
------------------------------------------------------------------------
 e1000000 b24f1900 00000000 d713a532 01000000 

 <32 bytes per line>

BBED> sum apply
Check value for File 5, Block 1:
current = 0x4a10, required = 0x4a10

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/app/oracle/oradata/PROD/tp01.dbf
BLOCK = 1


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing   (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 0
Total Blocks Influx           : 0
Message 531 not found;  product=RDBMS; facility=BBED

##########再次打开库，OK!

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1. sys@PROD> select status from v$instance;  
2. STATUS  
3. ------------  
4. MOUNTED  
5.   
6. sys@PROD> alter database open;  
7.   
8. Database altered.  

sys@PROD> select status from v$instance;
STATUS
------------
MOUNTED

sys@PROD> alter database open;

Database altered.

###############################修改数据文件头的注意点：
 1、修改数据的DBA,rdba_kcbh

 2、修改文件的大小，kccfhfsz

 3、修改文件号，kccfhfno

 4、修改文件创建时SCN，kcvfhcrs

 5、修改文件创建时间，kcvfhcrt

 6、修改表空间号，kcvfhtsn 

 7、修改相对文件号，kcvfhrfn  

 8、修改表空间的名称， kcvfhtnm

 9、修改表空间的长度，kcvfhtln     

 10、修改检查点的SCN，kcvfhckp

 11、修改检查点的时间，kcvcptim 

 12、修改检查点的计数器，kcvfhcpc

 13、修改检查点的控制文件备份的计数器， kcvfhccc

 14、如果你修改是1号文件的1号块他的root rdba的地针是指向了bootstrap$

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