Oracle bbed使用说明2---常用命令

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Oracle bbed使用说明2---常用命令

2024-11-06 10:29:39 206人阅读

一.BBED常用命令说明

先看帮助的说明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 bytesSET LIST[FILE] ‘filename‘SET WIDTH character_countSET COUNT bytes_to_displaySET IBASE [ HEX | OCT | DEC ]SET OBASE [ HEX | OCT | DEC ]SET MODE  [ BROWSE | EDIT ]SET SPOOL [ Y | N ]SHOW [ <SET parameter> | ALL ]INFOMAP[/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 rowf - 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 rowidFIND[/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 ]UNDOHELP [ <bbed command> | ALL ]VERIFY [ DBA | FILE | FILENAME | BLOCK ]CORRUPT [ DBA | FILE | FILENAME | BLOCK ]BBED>set 设定当前的环境show 查看当前的环境参数，跟sqlplus的同名命令类似。dump 列出指定block的内容find 在指定的block中查找指定的字符串，结果是显示出字符串，及其偏移量--offset，偏移量就是在block中的字节数modify 修改指定block的指定偏移量的值，可以在线修改。copy 把一个block的内容copy到另一个block中verify 检查当前环境是否有坏块sum 计算block的checksum，modify之后block就被标识为坏块，current checksum与reqired checksum不一致，sum命令可以计算出新的checksum并应用到当前块。undo 回滚当前的修改操作，如果手误做错了，undo一下就ok了，回到原来的状态。revert 回滚所有之前的修改操作，意思就是 undo all

1.1 info

--显示当前可以进行browse或者edit 的file。即我们filelist( /u01/app/oracle/bbed/filelist.txt )里指定的datafile信息。

BBED> info File#  Name                                                        Size(blks) -----  ----                                                        ----------     1  /u01/app/oracle/oradata/ORCL/datafile/o1_mf_system_bc7ld3s       61440     2  /u01/app/oracle/oradata/ORCL/datafile/o1_mf_undotbs1_bc7ld       40320     3  /u01/app/oracle/oradata/ORCL/datafile/o1_mf_sysaux_bc7lf4b       30720     4  /u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_bc7lflno         640BBED>

1.2 show

显示当前的配置选项，注意当前文件及数据块

BBED> show        FILE#           3        BLOCK#          12        OFFSET          0        DBA             0x00c0000c (12582924 3,12)        FILENAME        /u01/app/oracle/oradata/ORCL/datafile/o1_mf_sysaux_bc7lf4bd_.dbf        BIFILE          bifile.bbd        LISTFILE        /u01/app/oracle/bbed/filelist.txt        BLOCKSIZE       8192        MODE            Edit        EDIT            Unrecoverable        IBASE           Dec        OBASE           Dec        WIDTH           80        COUNT           512        LOGFILE         log.bbd        SPOOL           NoBBED>

1.3 set 命令

1.3.1 set file ：根据文件号设置当前文件

BBED> set file 2        FILE#           2BBED> show        FILE#           2  --当前文件        BLOCK#          12         OFFSET          0        DBA             0x0080000c (8388620 2,12)        FILENAME        /u01/app/oracle/oradata/ORCL/datafile/o1_mf_undotbs1_bc7ldql4_.dbf        BIFILE          bifile.bbd        LISTFILE        /u01/app/oracle/bbed/filelist.txt        BLOCKSIZE       8192        MODE            Edit        EDIT            Unrecoverable        IBASE           Dec        OBASE           Dec        WIDTH           80        COUNT           512        LOGFILE         log.bbd        SPOOL           NoBBED>

1.3.2 set block ：指定当前文件中的块

BBED> set block 100        BLOCK#          100BBED> show        FILE#           2        BLOCK#          100        OFFSET          0        DBA             0x00800064 (8388708 2,100)        FILENAME        /u01/app/oracle/oradata/ORCL/datafile/o1_mf_undotbs1_bc7ldql4_.dbf        BIFILE          bifile.bbd        LISTFILE        /u01/app/oracle/bbed/filelist.txt        BLOCKSIZE       8192        MODE            Edit        EDIT            Unrecoverable        IBASE           Dec        OBASE           Dec        WIDTH           80        COUNT           512        LOGFILE         log.bbd        SPOOL           No        BBED> set block +10        BLOCK#          110BBED>

1.3.3 set width ：设定当前屏幕的宽度，默认是80.

BBED> set width 100        WIDTH           100BBED>

3.3.4 set mode ：设置bbed 的模式browse 或 edit。 browse 模式不允许进行修改。如果要修改，就选择edit模式。这个在之前的配置文件bbed.par里，选择了edit。

BBED> set mode browse        MODE            BrowseBBED> set mode edit        MODE            EditBBED>

1.4 MAP

--Map会通过偏移量来显示block里的详细信息，如block header，data block header 和row directory。使用/v 选项，可以查看更详细的信息。

--在不指定block的情况下，会显示当前block的信息，如果想显示其他block的信息，可以使用file name，file id，block 和DBA 来指定要显示的block。

BBED> map    --只显示当前块的部分信息 File: /u01/app/oracle/oradata/ORCL/datafile/o1_mf_undotbs1_bc7ldql4_.dbf (2) Block: 111                                   Dba:0x0080006f------------------------------------------------------------ Undo Data struct kcbh, 20 bytes                      @0        struct ktubh, 200 bytes                    @20       ub1 freespace[36]                          @220      ub1 undodata[7932]                         @256      ub4 tailchk                                @8188    BBED> map /v  -显示当前块的详细信息 File: /u01/app/oracle/oradata/ORCL/datafile/o1_mf_undotbs1_bc7ldql4_.dbf (2) Block: 111                                   Dba:0x0080006f------------------------------------------------------------ Undo Data struct kcbh, 20 bytes                      @0           ub1 type_kcbh                           @0           ub1 frmt_kcbh                           @1           ub1 spare1_kcbh                         @2           ub1 spare2_kcbh                         @3           ub4 rdba_kcbh                           @4           ub4 bas_kcbh                            @8           ub2 wrp_kcbh                            @12          ub1 seq_kcbh                            @14          ub1 flg_kcbh                            @15          ub2 chkval_kcbh                         @16          ub2 spare3_kcbh                         @18       struct ktubh, 200 bytes                    @20          struct ktubhxid, 8 bytes                @20          ub2 ktubhseq                            @28          ub1 ktubhcnt                            @30          ub1 ktubhirb                            @31          ub1 ktubhicl                            @32          ub1 ktubhflg                            @33          ub2 ktubhidx[93]                        @34       ub1 freespace[36]                          @220      ub1 undodata[7932]                         @256      ub4 tailchk                                @8188    BBED>

1.5 dump

---dump命令可以讲block 的内容显示到屏幕。每次显示的bytes由count 控制，默认是512 bytes。使用 /v 选项，可以显示更多详细信息

BBED> dump /v dba 2,111 offset 0 count 128 File: /u01/app/oracle/oradata/ORCL/datafile/o1_mf_undotbs1_bc7ldql4_.dbf (2) Block: 111     Offsets:    0 to  127  Dba:0x0080006f------------------------------------------------------- 02a20000 6f008000 b6260400 00005d04 l ..o.......]. 38e80000 07002700 ae000000 48005c5c l 8...‘...H.\ 0000e81f 741f301f d01e8c1e 281ee41d l ..t.0...(.                                                   801d1c1d d81c781c 341cd01b 8c1b281b l ....x.4...(. c41a801a 201adc19 78193419 d0186c18 l .. .x.4.l. 2818c817 84172017 dc167816 1416d015 l (... .x...                                                   70152c15 c8148414 2014bc13 78131813 l p.,... .x... d4127012 2c12c811 64112011 b8105410 l p.,.d. .T. <16 bytes per line>BBED>

1.6 find

---可以用来搜索关键字。可以从offset 0 搜索到top 或者从当前的offset 搜索到top

---find 命令支持的switch 类型如下表，注意，find 不支持number和Date

Switch	Datatype
/x	Hexadecimal
/d	Decimal
/u	unsigned decimal
/o	Octal
/c	character (native)

--查找文件及数据块编号SQL> select   2       rowid,  3       dbms_rowid.rowid_relative_fno(rowid) REL_FNO,--File id 数据库文件数少于1024时，REL_FNO与File id相同  4       dbms_rowid.rowid_block_number(rowid) BLOCK_NO,--Block number  5       dbms_rowid.rowid_row_number(rowid)   ROW_NO  6  from tv.t01  7  where name=‘zz‘;ROWID                 REL_FNO   BLOCK_NO     ROW_NO------------------ ---------- ---------- ----------AAAMfRAAFAAAAy0AFM          5       3252        332SQL> --设置当前文件及数据块BBED> set file 5        FILE#           5BBED> set block 3252        BLOCK#          3252BBED> show        FILE#           5        BLOCK#          3252        OFFSET          0        DBA             0x01400cb4 (20974772 5,3252)        FILENAME        /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf        BIFILE          bifile.bbd        LISTFILE        /u01/app/oracle/bbed/filelist.txt        BLOCKSIZE       8192        MODE            Edit        EDIT            Unrecoverable        IBASE           Dec        OBASE           Dec        WIDTH           80        COUNT           512        LOGFILE         log.bbd        SPOOL           No    BBED> find /c zz top  --前面已经指定数据文件5和数据块3252 File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252             Offsets: 5530 to 6041           Dba:0x01400cb4------------------------------------------------------------------------ 7a7a2c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  <32 bytes per line>BBED>BBED> dump /v offset 5530 count 128   --前面已经指定数据文件5和数据块3252 File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252    Offsets: 5530 to 5657  Dba:0x01400cb4------------------------------------------------------- 7a7a2c00 02018002 79792c00 02018002 l zz,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... <16 bytes per line>BBED> --结果显示的头两个字母就是zz--如果我们要继续搜索zz，那么只需要按下f 就可以了，不需要跟参数。BBED> f     BBED-00212: search string not found  --我们的块里只有一个‘zz‘BBED>

1.7 modify（m）

---用于改变块内的数据

---在file 5,block 3252 有‘zz‘，我们这里把zz 改成ww。

BBED> set file 5        FILE#           5BBED> set block 3252        BLOCK#          3252BBED> show        FILE#           5        BLOCK#          3252        OFFSET          0        DBA             0x01400cb4 (20974772 5,3252)        FILENAME        /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf        BIFILE          bifile.bbd        LISTFILE        /u01/app/oracle/bbed/filelist.txt        BLOCKSIZE       8192        MODE            Edit        EDIT            Unrecoverable        IBASE           Dec        OBASE           Dec        WIDTH           80        COUNT           512        LOGFILE         log.bbd        SPOOL           No--更改前的数据BBED> dump /v offset 5530 count 128 File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252    Offsets: 5530 to 5657  Dba:0x01400cb4------------------------------------------------------- 7a7a2c00 02018002 79792c00 02018002 l zz,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... <16 bytes per line>--开始更改BBED> modify /c ww offset 5530  File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252             Offsets: 5530 to 5657           Dba:0x01400cb4------------------------------------------------------------------------ 77772c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  <32 bytes per line> --查看更改后的BBED> dump /v offset 5530 count 128   File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252    Offsets: 5530 to 5657  Dba:0x01400cb4------------------------------------------------------- 77772c00 02018002 79792c00 02018002 l ww,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... <16 bytes per line>BBED>

接下来使改变的值生效的命令sum

1.8 sum：使这些修改生效

BBED> sum dba 5,3252 applyWarning: contents of previous BIFILE will be lost. Proceed? (Y/N) yCheck value for File 5, Block 3252:current = 0x5a3f, required = 0x5a3fBBED>--回到sql窗口，刷新缓存SQL>  alter system set events = ‘immediate trace name flush_cache‘;或SQL> alter system flush buffer_cache;--查询SQL> select * from tv.t01 where name=‘ww‘;ID NAME-- ---------- 1 wwSQL>

注：下面对这些数据用SQL语句做相互转换

1）把表中的数据转成16进制（即在ORACLE内部数据块看到的数据），用以下sql语句：SQL> select  dump(‘ww‘,‘16‘)    2  from dual;DUMP(‘WW‘,‘16‘)-------------------Typ=96 Len=2: 77,77  --7777为‘ww‘的16进制值SQL> 2）反过来把16进制转成表中的数据（当然我这边的数据类型只考虑了number和varchar类型），用以sql下语句：SQL> col id for 9  ---对number类型格式化。如果写成col id for a9，查询出的值为乱码（##########）SQL> col name for a10SQL> select   2     UTL_RAW.CAST_TO_NUMBER(replace(‘c102‘,‘ ‘)) id,  3     UTL_RAW.CAST_TO_VARCHAR2(replace(‘77772c00‘,‘ ‘)) name  4  from  dual;ID NAME-- ---------- 1 ww,SQL>

1.9 revert

--revert是恢复自bbed 启动以来的所有修改（包含被sum apply的数据）

--将‘ww‘改成‘zz‘BBED> modify /c zz offset 5530 File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252             Offsets: 5530 to 5657           Dba:0x01400cb4------------------------------------------------------------------------ 7a7a2c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  <32 bytes per line>--查看BBED> dump /v offset 5530 count 128 File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252    Offsets: 5530 to 5657  Dba:0x01400cb4------------------------------------------------------- 7a7a2c00 02018002 79792c00 02018002 l zz,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... <16 bytes per line>--应用修改BBED> sum dba 5,3252 applyCheck value for File 5, Block 3252:current = 0x5732, required = 0x5732--在sql窗口查看SQL> select * from tv.t01 where name=‘zz‘;ID NAME-- ---------- 1 zzSQL>--revert是恢复自bbed 启动以来的所有修改BBED> revert dba 5,3252  All changes made to this block will be rolled back. Proceed? (Y/N) yReverted file ‘/u01/app/oracle/oradata/ORCL/datafile/test_01.dbf‘, block 3252BBED> dump /v offset 5530 count 128 File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252    Offsets: 5530 to 5657  Dba:0x01400cb4------------------------------------------------------- 77772c00 02018002 79792c00 02018002 l ww,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... 79792c00 02018002 79792c00 02018002 l yy,.....yy,..... <16 bytes per line>--应用修改BBED> sum applyCheck value for File 5, Block 3252:current = 0x5a3f, required = 0x5a3fBBED> --在sql窗口查看SQL> alter system set events = ‘immediate trace name flush_cache‘;System altered.SQL> select * from tv.t01 where name=‘zz‘;no rows selectedSQL>

1.10 undo ：回滚最后一次的操作

BBED> modify /c zz offset 5530 File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252             Offsets: 5530 to 5657           Dba:0x01400cb4------------------------------------------------------------------------ 7a7a2c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  <32 bytes per line>--应用BBED> sum applyCheck value for File 5, Block 3252:current = 0x5732, required = 0x5732--回滚，即使被应用的数据也会被回滚BBED> undoBBED> modify /x 7777 filename ‘/u01/app/oracle/oradata/ORCL/datafile/test_01.dbf‘ block 3252. offset 5530. File: /u01/app/oracle/oradata/ORCL/datafile/test_01.dbf (5) Block: 3252             Offsets: 5530 to 5657           Dba:0x01400cb4------------------------------------------------------------------------ 77772c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  79792c00 02018002 79792c00 02018002 79792c00 02018002 79792c00 02018002  <32 bytes per line>BBED> sum applyCheck value for File 5, Block 3252:current = 0x5a3f, required = 0x5a3fBBED>

1.11 corrupt

将一个block 标记为corrupt，这样db 在操作时就会跳过该block，从而避免错误BBED> corrupt dba 5,3252Block marked media corrupt.BBED>

注意： undo 命令不能undo 一个corruption，但是revert 命令却可以

--整理自网络http://blog.csdn.net/tianlesoftware/article/details/5006580

Oracle bbed使用说明2---常用命令

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