标签归档：dul恢复asm

使用dul恢复asm中数据

发表于 2012 年 6 月 25 日 由 惜分飞

大家都知道新版本的odu可以在asm不启动的情况下挖数据文件,其实在新版本的dul中,也可以绕过asm挖数据文件,而且操作起来更加方便.
环境准备

SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production

--查询asm disk
SQL> select group_number,DISK_NUMBER,PATH
  2  from v$asm_disk where group_number<>0;
 
GROUP_NUMBER DISK_NUMBER PATH
------------ ----------- --------------------
           1           0 /dev/raw/raw2
           1           1 /dev/raw/raw3 

SQL> conn chf/xifenfei
Connected.

--创建测试表
SQL> create table t_xifenfei
  2  as
  3   select object_id,object_name from dba_objects where rownum<10;

Table created.

SQL> select * from t_xifenfei;

 OBJECT_ID OBJECT_NAME
---------- --------------------------------
        44 I_USER1
        28 CON$
        15 UNDO$
        29 C_COBJ#
         3 I_OBJ#
        25 PROXY_ROLE_DATA$
        39 I_IND1
        51 I_CDEF2

9 rows selected.

--数据文件
SQL> select name from v$datafile;

NAME
----------------------------------------------------------------------
+XIFENFEI/asm10g/datafile/system.256.786578479
+XIFENFEI/asm10g/datafile/undotbs1.258.786578481
+XIFENFEI/asm10g/datafile/sysaux.257.786578481
+XIFENFEI/asm10g/datafile/users.259.786578481
+XIFENFEI/asm10g/datafile/xff.265.786578851

--关闭数据库
SQL> shutdown immediate;
ORA-01031: insufficient privileges
SQL> conn / as sysdba
Connected.
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

--关闭asm
[oracle@xifenfei home]$ export ORACLE_SID=+ASM
[oracle@xifenfei home]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jun 22 00:18:18 2012

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


Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

SQL> shutdown immediate
ASM diskgroups dismounted
ASM instance shutdown
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
[oracle@xifenfei home]$ ps -ef|grep ASM
oracle   18885 10980  0 00:18 pts/0    00:00:00 grep ASM
[oracle@xifenfei home]$ ps -ef|grep ora_
oracle   18887 10980  0 00:18 pts/0    00:00:00 grep ora_

初始化参数配置

[oracle@xifenfei dul]$ vi init.dul 
db_block_size=8192
control_file = control.dul
dc_segments=100000
osd_word_size = 32
osd_big_endian_flag=false
osd_dba_file_bits=10
osd_c_struct_alignment=32
osd_file_leader_size=1
osd_word_size = 32
dc_columns=2000000
dc_tables=10000
dc_objects=1000000
dc_users=400
dc_segments=100000
control_file = control.dul
db_block_size=8192
export_mode=false
compatible=10
BUFFER=10485760

控制文件配置

[oracle@xifenfei dul]$ more control.dul 
disk /dev/raw/raw2
disk /dev/raw/raw3  
0          1 +XIFENFEI/asm10g/datafile/system.256.786578479
1          2 +XIFENFEI/asm10g/datafile/undotbs1.258.786578481
2          3 +XIFENFEI/asm10g/datafile/sysaux.257.786578481
4          4 +XIFENFEI/asm10g/datafile/users.259.786578481
6          5 +XIFENFEI/asm10g/datafile/xff.265.786578851

使用dul恢复表测试

--启动dul
[oracle@xifenfei dul]$ ./dul

Data UnLoader: 10.2.0.5.13 - Internal Only - on Thu Jun 21 23:49:46 2012
with 64-bit io functions

Copyright (c) 1994 2012 Bernard van Duijnen All rights reserved.

 Strictly Oracle Internal Use Only


DUL: Warning: Recreating file "dul.log"
Disk group XIFENFEI, dul group_cid 0
Discovered disk /dev/raw/raw2 as diskgroup XIFENFEI, disk number 0 size 784 Mb File1 starts at 2, dul_disk_cid 0
Discovered disk /dev/raw/raw3 as diskgroup XIFENFEI, disk number 1 size 7059 Mb without File1 meta data, dul_disk_cid 1

DUL: Warning: Dictionary cache DC_ASM_EXTENTS is empty
DUL: Error: Filedir block not allocated, file does not exist
DUL: Error: Could not load asm meta data for group XIFENFEI file 9
Oracle data file size 503324672, block size 8192
Found db_id = 123111609
Found db_name = ASM10G
Oracle data file size 26222592, block size 8192
Oracle data file size 251666432, block size 8192
Oracle data file size 5251072, block size 8192

--加载数据字典
DUL> bootstrap;
Probing file = 1, block = 377
. unloading table                BOOTSTRAP$
DUL: Warning: block number is non zero but marked deferred trying to process it anyhow
      57 rows unloaded
DUL: Warning: Dictionary cache DC_BOOTSTRAP is empty
Reading BOOTSTRAP.dat 57 entries loaded
Parsing Bootstrap$ contents
DUL: Warning: Recreating file "dict.ddl"
Generating dict.ddl for version 10
 OBJ$: segobjno 18, file 1 block 121
 TAB$: segobjno 2, tabno 1, file 1  block 25
 COL$: segobjno 2, tabno 5, file 1  block 25
 USER$: segobjno 10, tabno 1, file 1  block 89
Running generated file "@dict.ddl" to unload the dictionary tables
. unloading table                      OBJ$   50806 rows unloaded
. unloading table                      TAB$    1560 rows unloaded
. unloading table                      COL$   54822 rows unloaded
. unloading table                     USER$      57 rows unloaded
Reading USER.dat 57 entries loaded
Reading OBJ.dat 50806 entries loaded and sorted 50806 entries
Reading TAB.dat 1560 entries loaded
Reading COL.dat 54822 entries loaded and sorted 54822 entries
Reading BOOTSTRAP.dat 57 entries loaded

DUL: Warning: Recreating file "dict.ddl"
Generating dict.ddl for version 10
 OBJ$: segobjno 18, file 1 block 121
 TAB$: segobjno 2, tabno 1, file 1  block 25
 COL$: segobjno 2, tabno 5, file 1  block 25
 USER$: segobjno 10, tabno 1, file 1  block 89
 TABPART$: segobjno 266, file 1 block 2121
 INDPART$: segobjno 271, file 1 block 2161
 TABCOMPART$: segobjno 288, file 1 block 2297
 INDCOMPART$: segobjno 293, file 1 block 2345
 TABSUBPART$: segobjno 278, file 1 block 2217
 INDSUBPART$: segobjno 283, file 1 block 2257
 IND$: segobjno 2, tabno 3, file 1  block 25
 ICOL$: segobjno 2, tabno 4, file 1  block 25
 LOB$: segobjno 2, tabno 6, file 1  block 25
 COLTYPE$: segobjno 2, tabno 7, file 1  block 25
 TYPE$: segobjno 181, tabno 1, file 1  block 1297
 COLLECTION$: segobjno 181, tabno 2, file 1  block 1297
 ATTRIBUTE$: segobjno 181, tabno 3, file 1  block 1297
 LOBFRAG$: segobjno 299, file 1 block 2393
 LOBCOMPPART$: segobjno 302, file 1 block 2425
 UNDO$: segobjno 15, file 1 block 105
 TS$: segobjno 6, tabno 2, file 1  block 57
 PROPS$: segobjno 96, file 1 block 721
Running generated file "@dict.ddl" to unload the dictionary tables
. unloading table                      OBJ$
DUL: Warning: Recreating file "OBJ.ctl"
   50806 rows unloaded
. unloading table                      TAB$
DUL: Warning: Recreating file "TAB.ctl"
    1560 rows unloaded
. unloading table                      COL$
DUL: Warning: Recreating file "COL.ctl"
   54822 rows unloaded
. unloading table                     USER$
DUL: Warning: Recreating file "USER.ctl"
      57 rows unloaded
. unloading table                  TABPART$      72 rows unloaded
. unloading table                  INDPART$      80 rows unloaded
. unloading table               TABCOMPART$       0 rows unloaded
. unloading table               INDCOMPART$       0 rows unloaded
. unloading table               TABSUBPART$       0 rows unloaded
. unloading table               INDSUBPART$       0 rows unloaded
. unloading table                      IND$    2213 rows unloaded
. unloading table                     ICOL$    3618 rows unloaded
. unloading table                      LOB$     528 rows unloaded
. unloading table                  COLTYPE$    1688 rows unloaded
. unloading table                     TYPE$    1885 rows unloaded
. unloading table               COLLECTION$     551 rows unloaded
. unloading table                ATTRIBUTE$    7051 rows unloaded
. unloading table                  LOBFRAG$       1 row  unloaded
. unloading table              LOBCOMPPART$       0 rows unloaded
. unloading table                     UNDO$      21 rows unloaded
. unloading table                       TS$       7 rows unloaded
. unloading table                    PROPS$      27 rows unloaded
Reading USER.dat 57 entries loaded
Reading OBJ.dat 50806 entries loaded and sorted 50806 entries
Reading TAB.dat 1560 entries loaded
Reading COL.dat 54822 entries loaded and sorted 54822 entries
Reading TABPART.dat 72 entries loaded and sorted 72 entries
Reading TABCOMPART.dat 0 entries loaded and sorted 0 entries
Reading TABSUBPART.dat 0 entries loaded and sorted 0 entries
Reading INDPART.dat 80 entries loaded and sorted 80 entries
Reading INDCOMPART.dat 0 entries loaded and sorted 0 entries
Reading INDSUBPART.dat 0 entries loaded and sorted 0 entries
Reading IND.dat 2213 entries loaded
Reading LOB.dat 528 entries loaded
Reading ICOL.dat 3618 entries loaded
Reading COLTYPE.dat 1688 entries loaded
Reading TYPE.dat 1885 entries loaded
Reading ATTRIBUTE.dat 7051 entries loaded
Reading COLLECTION.dat 551 entries loaded
Reading BOOTSTRAP.dat 57 entries loaded
Reading LOBFRAG.dat 1 entries loaded and sorted 1 entries
Reading LOBCOMPPART.dat 0 entries loaded and sorted 0 entries
Reading UNDO.dat 21 entries loaded
Reading TS.dat 7 entries loaded
Reading PROPS.dat 27 entries loaded
Database character set is ZHS16GBK
Database national character set is AL16UTF16

--恢复表
DUL> unload table chf.t_xifenfei;
. unloading table                T_XIFENFEI       9 rows unloaded

验证恢复数据库

[oracle@xifenfei dul]$ ll CHF_T_XIFENFEI*
-rw-r--r-- 1 oracle oinstall  269 Jun 22 00:26 CHF_T_XIFENFEI.ctl
-rw-r--r-- 1 oracle oinstall  134 Jun 22 00:26 CHF_T_XIFENFEI.dat
[oracle@xifenfei dul]$ more CHF_T_XIFENFEI.ctl 
load data
CHARACTERSET UTF8
infile 'CHF_T_XIFENFEI.dat'
insert
into table "CHF"."T_XIFENFEI"
fields terminated by whitespace
(
  "OBJECT_ID"                        CHAR(2) enclosed by X'22'       
 ,"OBJECT_NAME"                      CHAR(16) enclosed by X'22'      
)
[oracle@xifenfei dul]$ more CHF_T_XIFENFEI.dat
"20" "ICOL$"
"44" "I_USER1"
"28" "CON$"
"15" "UNDO$"
"29" "C_COBJ#"
"3" "I_OBJ#"
"25" "PROXY_ROLE_DATA$"
"39" "I_IND1"
"51" "I_CDEF2"
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