一直没有心情研究比较深的东西，刚才心血来潮，试用了一下bbed。

有空一定要净下心来好好研究一下。

 

因为我的环境是rac，bbed识别不了：

 

RMAN> copy datafile '+RAC_DISK/racdb/datafile/users.264.727735605' to '/home/oracle/users.dbf';

Starting backup at 02-JAN-11
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=148 instance=RACDB1 devtype=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: sid=128 instance=RACDB2 devtype=DISK
channel ORA_DISK_1: starting datafile copy
input datafile fno=00005 name=+RAC_DISK/racdb/datafile/users.264.727735605
output filename=/home/oracle/users.dbf tag=TAG20110102T215342 recid=2 stamp=739403626
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:09
Finished backup at 02-JAN-11

 

[oracle@node2 ~]$ cd $ORACLE_HOME/rdbms/lib
[oracle@node2 lib]$ make -f ins_rdbms.mk $ORACLE_HOME/rdbms/lib/bbed

[oracle@node2 lib]$ cp bbed $ORACLE_HOME/bin/bbed
[oracle@node2 lib]$ cd $ORACLE_HOME/bin
[oracle@node2 bin]$ ls -al bbed
-rwxr-xr-x 1 oracle oinstall 536059 Jan  2 21:54 bbed
[oracle@node2 bin]$ vi par.txt

blocksize=8192
listfile=filelist.txt
mode=edit

 

[oracle@node2 bin]$ vi filelist.txt

5 /home/oracle/users.dbf 5251072

 

 

[oracle@node2 bin]$ bbed parfile=par.txt
Password:

BBED: Release 2.0.0.0.0 - Limited Production on Sun Jan 2 22:01:37 2011

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

************* !!! For Oracle Internal Use only !!! ***************

BBED> help
HELP [ | ALL ]

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 [ | 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 ]
:
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] =
: [ DBA | FILE | FILENAME | BLOCK | OFFSET | symbol | *symbol ]
: [ value | ]
SUM [ DBA | FILE | FILENAME | BLOCK ] [ APPLY ]
PUSH [ DBA | FILE | FILENAME | BLOCK | OFFSET ]
POP [ALL]
REVERT [ DBA | FILE | FILENAME | BLOCK ]
UNDO
HELP [ | ALL ]
VERIFY [ DBA | FILE | FILENAME | BLOCK ]
CORRUPT [ DBA | FILE | FILENAME | BLOCK ]

BBED> show all
        FILE#           5
        BLOCK#          1
        OFFSET          0
        DBA             0x01400001 (20971521 5,1)
        FILENAME        /home/oracle/users.dbf
        BIFILE          bifile.bbd
        LISTFILE        filelist.txt
        BLOCKSIZE       8192
        MODE            Edit
        EDIT            Unrecoverable
        IBASE           Dec
        OBASE           Dec
        WIDTH           80
        COUNT           512
        LOGFILE         log.bbd
        SPOOL           No

BBED> set file 5 block 8;
        FILE#           5
        BLOCK#          8

BBED> dump
 File: /home/oracle/users.dbf (5)
 Block: 8                Offsets:    0 to  511           Dba:0x01400008
------------------------------------------------------------------------
 1ea20000 08004001 80220000 00000104 7c810000 05000000 09c02600 00000000
 00000000 00f80000 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 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

 <32 bytes per line>