创建測试表：
ZBDBA@orcl11g>select * from zbdba;NAME------------------------------------------------------------zbdbahuihuiZBDBA@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改动块状态：
BBED> set file 6 block 191 FILE# 6 BLOCK# 191BBED> mapFile: /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 kcbhstruct 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 0x0000BBED> modify /x ff offset 14Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) yFile: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6)Block: 191 Offsets: 14 to 525 Dba:0x018000bf------------------------------------------------------------------------ff066d42 00000100 00000d23 01009636 50000000 00000200 3200b800 8001130002001800 0000e90b 80021100 38000220 0000cd36 50000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000001 0200ffff 1600851f6f1f6f1f 00000200 8f1f851f 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000<32 bytes per line>BBED> p kcbhstruct 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 0x0000BBED> sum applyCheck 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 kcbhstruct 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 0x0000BBED> p tailchkub4 tailchk @8188 0x36cd0601这里tailchk信息正确，无需改动
BBED> modify /x 01 offset 14Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) yFile: /opt/oracle/oradata/orcl11g/zbdba01.dbf (6)Block: 191 Offsets: 14 to 525 Dba:0x018000bf------------------------------------------------------------------------01069342 00000100 00000d23 01009636 50000000 00000200 3200b800 8001130002001800 0000e90b 80021100 38000220 0000cd36 50000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000001 0200ffff 1600851f6f1f6f1f 00000200 8f1f851f 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000<32 bytes per line>BBED> p kcbhstruct 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 0x0000BBED> sum applyCheck value for File 6, Block 191:current = 0x426d, required = 0x426dBBED> verifyDBVERIFY - Verification startingFILE = /opt/oracle/oradata/orcl11g/zbdba01.dbfBLOCK = 191DBVERIFY - Verification completeTotal Blocks Examined : 1Total Blocks Processed (Data) : 1Total Blocks Failing (Data) : 0Total Blocks Processed (Index): 0Total Blocks Failing (Index): 0Total Blocks Empty : 0Total Blocks Marked Corrupt : 0Total Blocks Influx : 0Message 531 not found; product=RDBMS; facility=BBED再次去数据库查询：
ZBDBA@orcl11g>select * from zbdba;NAME------------------------------------------------------------zbdbahuihui