一、安装bbed
[oracle@ECP-UC-DB1 bin]$ cd $ORACLE_HOME/rdbms/lib
[oracle@ECP-UC-DB1 lib]$ ls -al *bb*
-rw-r–r– 1 oracle oinstall 1863 Mar 11 2008 sbbdpt.o
-rw-r–r– 1 oracle oinstall 1191 Mar 11 2008 ssbbded.o
[oracle@ECP-UC-DB1 lib]$ make -f ins_rdbms.mk $ORACLE_HOME/rdbms/lib/bbed
[oracle@ECP-UC-DB1 lib]$ mv bbed $ORACLE_HOME/bin
[oracle@ECP-UC-DB1 lib]$ cd ~
二、bben入门
[oracle@ECP-UC-DB1 ~]$ bbed
Password: blockedit（默认该密码）
BBED: Release 2.0.0.0.0 – Limited Production on Sun Aug 14 19:56:10 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
************* !!! For Oracle Internal Use only !!! ***************
BBED> help all
SET DBA [ dba | file#, block# ]
SET FILENAME ‘filename’
SET FILE file#
SET BLOCK [+/-]block#
SET OFFSET [ [+/-]byte offset | symbol | *symbol ]
SET BLOCKSIZE bytes
SET LIST[FILE] ‘filename’
SET WIDTH character_count
SET COUNT bytes_to_display
SET IBASE [ HEX | OCT | DEC ]
SET OBASE [ HEX | OCT | DEC ]
SET MODE [ BROWSE | EDIT ]
SET SPOOL [ Y | N ]
SHOW [ <SET parameter> | ALL ]
INFO
MAP[/v] [ DBA | FILENAME | FILE | BLOCK ]
DUMP[/v] [ DBA | FILENAME | FILE | BLOCK | OFFSET | COUNT ]
PRINT[/x|d|u|o|c] [ DBA | FILE | FILENAME | BLOCK | OFFSET | symbol | *symbol ]
EXAMINE[/Nuf] [ DBA | FILE | FILENAME | BLOCK | OFFSET | symbol | *symbol ]
</Nuf>:
N – a number which specifies a repeat count.
u – a letter which specifies a unit size:
b – b1, ub1 (byte)
h – b2, ub2 (half-word)
w – b4, ub4(word)
r – Oracle table/index row
f – a letter which specifies a display format:
x – hexadecimal
d – decimal
u – unsigned decimal
o – octal
c – character (native)
n – Oracle number
t – Oracle date
i – Oracle rowid
FIND[/x|d|u|o|c] numeric/character string [ TOP | CURR ]
COPY [ DBA | FILE | FILENAME | BLOCK ] TO [ DBA | FILE | FILENAME | BLOCK ]
MODIFY[/x|d|u|o|c] numeric/character string
[ DBA | FILE | FILENAME | BLOCK | OFFSET | symbol | *symbol ]
ASSIGN[/x|d|u|o] <target spec>=<source spec>
<target spec> : [ DBA | FILE | FILENAME | BLOCK | OFFSET | symbol | *symbol ]
<source spec> : [ value | <target spec options> ]
SUM [ DBA | FILE | FILENAME | BLOCK ] [ APPLY ]
PUSH [ DBA | FILE | FILENAME | BLOCK | OFFSET ]
POP [ALL]
REVERT [ DBA | FILE | FILENAME | BLOCK ]
UNDO
HELP [ <bbed command> | ALL ]
VERIFY [ DBA | FILE | FILENAME | BLOCK ]
CORRUPT [ DBA | FILE | FILENAME | BLOCK ]
三、创建测试表
[oracle@ECP-UC-DB1 ~]$ sqlplus chf/xifenfei
SQL*Plus: Release 10.2.0.4.0 – Production on Sun Aug 14 19:58:46 2011
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 – 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> create table t_bbed (id number,name varchar2(100)) tablespace xff;
Table created.
SQL> insert into t_bbed values(1,’xifenfei’);
1 row created.
SQL> insert into t_bbed values(2,’xff’);
1 row created.
SQL> insert into t_bbed values(3,’chengfei’);
1 row created.
SQL> commit;
Commit complete.
SQL> conn / as sysdba
Connected.
SQL> alter system checkpoint;
System altered.
SQL> conn chf/xifenfei
Connected.
SQL> set serveroutput on
SQL> declare
ridtype number;
objnum number;
relfno number;
blno number;
rowno number;
rid rowid;
begin
select rowid into rid from t_bbed where id=1;
dbms_rowid.rowid_info(rid,ridtype,objnum,relfno,blno,rowno,’SMALLFILE’);
dbms_output.put_line(‘Row Typ-‘||to_char(ridtype));
dbms_output.put_line(‘Obj No-‘||to_char(objnum));
dbms_output.put_line(‘RFNO-‘||to_char(relfno));
dbms_output.put_line(‘Block No-‘||to_char(blno));
dbms_output.put_line(‘Row No-‘||to_char(rowno));
end;–查看rowid对应的文件号，块号等信息
/
Row Typ-1
Obj No-52721
RFNO-6
Block No-780
Row No-1
PL/SQL procedure successfully completed.
四、bben准备工作
1、创建参数文件
[oracle@ECP-UC-DB1 ~]$ cat parfile.conf
blocksize=8192
listfile=list
mode=edit
2、创建数据文件列表
[oracle@ECP-UC-DB1 ~]$ cat list
1 /opt/oracle/oradata/test/xifenfei01.dbf 2097160192
五、修改数据块中内容
[oracle@ECP-UC-DB1 ~]$ bbed parfile=parfile.conf
Password:
BBED: Release 2.0.0.0.0 – Limited Production on Sun Aug 14 20:35:41 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
************* !!! For Oracle Internal Use only !!! ***************
1、定位需要修改块
BBED> set dba 1,780
DBA 0x0040030c (4195084 1,780)
2、查看相关内容
BBED> find /c xifenfei
File: /opt/oracle/oradata/test/xifenfei01.dbf (1)
Block: 780 Offsets: 8180 to 8191 Dba:0x0040030c
————————————————————————
78696665 6e666569 01062bce
<32 bytes per line>
3、dump文件中内容
BBED> dump /v dba 1,780 offset 8180 count 32
File: /opt/oracle/oradata/test/xifenfei01.dbf (1)
Block: 780 Offsets: 8170 to 8191 Dba:0x0040030c
——————————————————-
7866662c 010202c1 02087869 66656e66 l xff,……xifenf
65690106 2bce l ei..+.
<16 bytes per line>
4、修改数据块内容
BBED> modify 500 dba 1,780
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
File: /opt/oracle/oradata/test/xifenfei01.dbf (1)
Block: 780 Offsets: 8180 to 8191 Dba:0x0040030c
————————————————————————
01f46665 6e666569 01062bce
<32 bytes per line>
BBED> find /c xienfei
BBED-00212: search string not found
BBED> exit
六、验证修改是否成功
1、dbv验证
[oracle@ECP-UC-DB1 ~]$ dbv file =/opt/oracle/oradata/test/xifenfei01.dbf
DBVERIFY: Release 10.2.0.4.0 – Production on Sun Aug 14 20:30:56 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
DBVERIFY – Verification starting : FILE = /opt/oracle/oradata/test/xifenfei01.dbf
Page 780 is marked corrupt
Corrupt block relative dba: 0x0180030c (file 6, block 780)
Bad check value found during dbv:
Data in bad block:
type: 6 format: 2 rdba: 0x0180030c
last change scn: 0x0000.0012ce2b seq: 0x1 flg: 0x06
spare1: 0x0 spare2: 0x0 spare3: 0x0
consistency value in tail: 0xce2b0601
check value in block header: 0x6382
computed block checksum: 0x1c
DBVERIFY – Verification complete
Total Pages Examined : 1280
Total Pages Processed (Data) : 690
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 0
Total Pages Failing (Index): 0
Total Pages Processed (Other): 31
Total Pages Processed (Seg) : 0
Total Pages Failing (Seg) : 0
Total Pages Empty : 558
Total Pages Marked Corrupt : 1
Total Pages Influx : 0
Highest block SCN : 1232338 (0.1232338)
2、rman验证
[oracle@ECP-UC-DB1 ~]$ $ORACLE_HOME/bin/rman target /
Recovery Manager: Release 10.2.0.4.0 – Production on Sun Aug 14 20:39:55 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
connected to target database: TEST (DBID=2056006906)
RMAN> backup check logical validate datafile 6;
Starting backup at 2011-08-14 20:40:06
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=155 devtype=DISK
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00006 name=/opt/oracle/oradata/test/xifenfei01.dbf
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 2011-08-14 20:40:08
RMAN> exit
Recovery Manager complete.
3、直接查询验证
[oracle@ECP-UC-DB1 ~]$ sqlplus chf/xifenfei
SQL*Plus: Release 10.2.0.4.0 – Production on Sun Aug 14 20:40:14 2011
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 – 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select file#,block#,blocks from v$database_block_corruption;
FILE# BLOCK# BLOCKS
———- ———- ———-
6 780 1
SQL> conn / as sysdba
Connected.
SQL> alter system flush BUFFER_CACHE;
System altered.
SQL> select * from chf.t_bbed;
select * from chf.t_bbed
*
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 6, block # 780)
ORA-01110: data file 6: ‘/opt/oracle/oradata/test/xifenfei01.dbf’