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BBED标记坏块以及修复坏块

时间：2021-07-01 10:21:17 帮助过：64人阅读

创建测试表： ZBDBA@orcl11gselect * from zbdba;NAME------------------------------------------------------------zbdbahuihuiZBDBA@orcl11gZBDBA@orcl11gZBDBA@orcl11gZBDBA@orcl11gZBDBA@orcl11gselect rowid,dbms_rowid.rowid_object(rowid) robject,

创建测试表：

ZBDBA@orcl11g>select * from zbdba;
NAME
------------------------------------------------------------
zbdba
huihui

ZBDBA@orcl11g>
ZBDBA@orcl11g>
ZBDBA@orcl11g>
ZBDBA@orcl11g>
ZBDBA@orcl11g>select rowid,dbms_rowid.rowid_object(rowid) robject,
  2  dbms_rowid.rowid_relative_fno(rowid) fno,
  3  dbms_rowid.rowid_block_number(rowid) bno,
  4  dbms_rowid.rowid_row_number(rowid) rno from zbdba where rownum=1;

ROWID                 ROBJECT        FNO        BNO        RNO
------------------ ---------- ---------- ---------- ----------
AAASMNAAGAAAAC/AAA      74509          6        191          0

使用bbed修改块状态：

BBED> set file 6 block 191
        FILE#           6
        BLOCK#          191

BBED> map
File: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6)
Block: 191                                   Dba:0x018000bf
------------------------------------------------------------
KTB Data Block (Table/Cluster)

struct kcbh, 20 bytes                      @0      

struct ktbbh, 72 bytes                     @20     

struct kdbh, 14 bytes                      @100    

struct kdbt[1], 4 bytes                    @114    

sb2 kdbr[2]                                @118    

ub1 freespace[8047]                        @122    

ub1 rowdata[19]                            @8169   

ub4 tailchk                                @8188   


BBED> p kcbh
struct kcbh, 20 bytes                       @0      
   ub1 type_kcbh                            @0        0x06
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x018000bf
   ub4 bas_kcbh                             @8        0x005036cd
   ub2 wrp_kcbh                             @12       0x0000
   ub1 seq_kcbh                             @14       0x01
   ub1 flg_kcbh                             @15       0x06 (KCBHFDLC, KCBHFCKV)
   ub2 chkval_kcbh                          @16       0x426d
   ub2 spare3_kcbh                          @18       0x0000

BBED> modify /x ff offset 14
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
File: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6)
Block: 191              Offsets:   14 to  525           Dba:0x018000bf
------------------------------------------------------------------------
ff066d42 00000100 00000d23 01009636 50000000 00000200 3200b800 80011300
02001800 0000e90b 80021100 38000220 0000cd36 50000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000001 0200ffff 1600851f
6f1f6f1f 00000200 8f1f851f 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

<32 bytes per line>

BBED> p kcbh
struct kcbh, 20 bytes                       @0      
   ub1 type_kcbh                            @0        0x06
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x018000bf
   ub4 bas_kcbh                             @8        0x005036cd
   ub2 wrp_kcbh                             @12       0x0000
   ub1 seq_kcbh                             @14       0xff
   ub1 flg_kcbh                             @15       0x06 (KCBHFDLC, KCBHFCKV)
   ub2 chkval_kcbh                          @16       0x426d
   ub2 spare3_kcbh                          @18       0x0000

BBED> sum apply
Check value for File 6, Block 191:
current = 0x4293, required = 0x4293

再回数据库查看该表：

ZBDBA@orcl11g>select * from zbdba;
select * from zbdba
              *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 6, block # 191)
ORA-01110: data file 6: '/opt/oracle/oradata/orcl11g/zbdba01.dbf'

常规坏块的处理方式：
1、event 10231
2、rowid抽取
3、DBMS_REPAIR

这里我用bbed修复该块：

BBED> p kcbh
struct kcbh, 20 bytes                       @0      
   ub1 type_kcbh                            @0        0x06
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x018000bf
   ub4 bas_kcbh                             @8        0x005036cd
   ub2 wrp_kcbh                             @12       0x0000
   ub1 seq_kcbh                             @14       0xff
   ub1 flg_kcbh                             @15       0x06 (KCBHFDLC, KCBHFCKV)
   ub2 chkval_kcbh                          @16       0x4293
   ub2 spare3_kcbh                          @18       0x0000

BBED> p tailchk
ub4 tailchk                                 @8188     0x36cd0601

这里tailchk信息正确，无需修改

BBED> modify /x 01 offset 14
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
File: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6)
Block: 191              Offsets:   14 to  525           Dba:0x018000bf
------------------------------------------------------------------------
01069342 00000100 00000d23 01009636 50000000 00000200 3200b800 80011300
02001800 0000e90b 80021100 38000220 0000cd36 50000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000001 0200ffff 1600851f
6f1f6f1f 00000200 8f1f851f 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

<32 bytes per line>

BBED> p kcbh
struct kcbh, 20 bytes                       @0      
   ub1 type_kcbh                            @0        0x06
   ub1 frmt_kcbh                            @1        0xa2
   ub1 spare1_kcbh                          @2        0x00
   ub1 spare2_kcbh                          @3        0x00
   ub4 rdba_kcbh                            @4        0x018000bf
   ub4 bas_kcbh                             @8        0x005036cd
   ub2 wrp_kcbh                             @12       0x0000
   ub1 seq_kcbh                             @14       0x01
   ub1 flg_kcbh                             @15       0x06 (KCBHFDLC, KCBHFCKV)
   ub2 chkval_kcbh                          @16       0x4293
   ub2 spare3_kcbh                          @18       0x0000

BBED> sum apply
Check value for File 6, Block 191:
current = 0x426d, required = 0x426d

BBED> verify
DBVERIFY - Verification starting
FILE = /opt/oracle/oradata/orcl11g/zbdba01.dbf
BLOCK = 191


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 1
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

再次去数据库查询：

ZBDBA@orcl11g>select * from zbdba;
NAME
------------------------------------------------------------
zbdba
huihui

BBED标记坏块以及修复坏块

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