Oracle BBED修改数据块中的数据

来源：这里教程网时间：2026-03-03 16:02:52 作者：

BBED修改数据：
----
**建立测试数据：**
SQL> create table dbhang (id number,name varchar2(20));
Table created.
SQL> insert into dbhang values(1,'baoyuhang');
1 row created.
SQL> commit;
Commit complete.
SQL> select * from dbhang;
ID NAME
1 baoyuhang

**查看文件号，块号，行号：**
select
rowid,
dbms_rowid.rowid_relative_fno(rowid)rel_fno,
dbms_rowid.rowid_block_number(rowid)blockno,
dbms_rowid.rowid_row_number(rowid) rowno
from dbhang;
ROWID		      REL_FNO	 BLOCKNO      ROWNO
------------------ ---------- ---------- ----------
AAAVoxAABAAAW8BAAA	    1	   93953	  0

**查询数据文件：**
SQL> select file# || ' ' ||name || '' || bytes from v$datafile;
                  FILE#||''||NAME||''||BYTES
1 /oracle/app/oradata/prod/system01.dbf786432000
2 /oracle/app/oradata/prod/sysaux01.dbf545259520
3 /oracle/app/oradata/prod/undotbs01.dbf94371840
4 /oracle/app/oradata/prod/users01.dbf5242880
5 /oracle/app/oradata/prod/example01.dbf328335360
6 /oracle/app/oradata/prod/dbhang01.dbf52428800
7 /oracle/app/oradata/prod/dbhang02.dbf52428800

**将以上查询的信息保存在文本中：**
[oracle@server1 ~]$ cat datafile.txt 
1 /oracle/app/oradata/prod/system01.dbf 786432000
2 /oracle/app/oradata/prod/sysaux01.dbf 545259520
3 /oracle/app/oradata/prod/undotbs01.dbf 94371840
4 /oracle/app/oradata/prod/users01.dbf 5242880
5 /oracle/app/oradata/prod/example01.dbf 328335360
6 /oracle/app/oradata/prod/dbhang01.dbf 52428800
7 /oracle/app/oradata/prod/dbhang02.dbf 52428800
**关闭数据库：**
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
**创建BBED参数文件：**
[oracle@server1 ~]$ cat bbed.par 
blocksize=8192
listfile=/home/oracle/datafile.txt   //指定文本文件
mode=edit    //编辑模式

**现将数据baoyuhang修改为bbbyuhang**
**连接BBED，进行数据定位：**
[oracle@server1 ~]$ bbed parfile=/home/oracle/bbed.par 
Password: 
BBED: Release 2.0.0.0.0 - Limited Production on Thu Jul 30 05:59:45 2020
Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.
************* !!! For Oracle Internal Use only !!! ***************
BBED>

**指定1号文件93953号块：**
BBED> set dba 1,93953 offset 0
	DBA            	0x00416f01 (4288257 1,93953)
	OFFSET         	0

**定位数据：（确定数据在block中的偏移量）**
BBED> find /c baoyuhang
 File: /oracle/app/oradata/prod/system01.dbf (1)
 Block: 93953            **Offsets: 8179 to 8191**           Dba:0x00416f01
 62616f79 7568616e 6704066c 38

**dump查看一下offset 8179信息：**
BBED> dump /v dba 1,93953 offset 8179 count 128
 File: /oracle/app/oradata/prod/system01.dbf (1)
 Block: 93953   Offsets: 8179 to 8191  Dba:0x00416f01
 62616f79 7568616e 6704066c 38       l baoyuhang..l8

**Offsets: 8179 to 8191**    代表这一行的地址。
**也是说baoyuhang属于8179-8191 **
b:8179
a:8180
o:8181
**修改 block将bao替换为bbb：**
BBED> **modify /c bbb dba 1,93953 offset 8179**
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /oracle/app/oradata/prod/system01.dbf (1)
 Block: 93953            Offsets: 8179 to 8191           Dba:0x00416f01
 62626279 7568616e 670106ba 3c

**再次查看修改后的数据：**
BBED> dump /v dba 1,93953 offset 8179 count 128
 File: /oracle/app/oradata/prod/system01.dbf (1)
 Block: 93953   Offsets: 8179 to 8191  Dba:0x00416f01
 62626279 7568616e 6704066c 38       l **bbbyuhang**..l8
**应用变更：**
BBED> sum dba 1,93953 apply
Check value for File 1, Block 93953:
current = 0x29a2, required = 0x29a2

**回到sqlplus查询修改后的数据**
SQL> startup;
ORACLE instance started.
Total System Global Area  830930944 bytes
Fixed Size		    2257800 bytes
Variable Size		  541068408 bytes
Database Buffers	  281018368 bytes
Redo Buffers		    6586368 bytes
Database mounted.
Database opened.

SQL> select * from dbhang;
ID NAME
1 bbbyuhang
**修改完毕.**
BBED的安装：http://blog.itpub.net/69975956/viewspace-2707944/