利用BBED恢复数据文件头
转载请注明出处：http://blog.csdn.net/guoyjoe/article/details/31018075 @@@@@@@利用BBED模拟损坏5文件1号块（文件头） 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:0x01
转载请注明出处：http://blog.csdn.net/guoyjoe/article/details/31018075
@@@@@@@利用BBED模拟损坏5文件1号块（文件头）
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BBED开始恢复
1、找个文件头覆盖
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1 2 3 |
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（1）改块的地址5文件1号块，rdba_kcbh
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(2)文件的大小kccfhfsz
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1 2 3 4 5 6 7 8 9 10 11 |
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(3)修改文件号（4--->5）
ub2 kccfhfno @52 0x0004
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(4)修改文件创建时SCN
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(5)修改文件创建时间
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 |
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ub4 kcvfhrfn @368 0x00000004
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 |
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ub2 kcvfhtln @336 0x0005
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(10)检查点
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##################校验块
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######################检查物理坏块
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############打开数据库报错
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###########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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 |
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##########再次打开库，OK!
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###############################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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