试验模拟导出Oracle 11G数据库中数据文件坏块中表中的数据
以前一直以为dul对应的版本只能恢复最高的数据库版本一致,今天测试发现dul 10可以恢复11g最新版的数据库.
模拟环境
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
PL/SQL Release 11.2.0.3.0 - Production
CORE 11.2.0.3.0 Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
SQL> select to_char(sysdate,'yyyy-mm-dd hh:mi:ss') "WWW.XIFENFEI.COM" FROM DUAL;
WWW.XIFENFEI.COM
-------------------
2012-08-04 12:49:29
SQL> create table t_xifenfei
2 as
3 select * from dba_objects;
Table created.
SQL> select count(*) from t_xifenfei;
COUNT(*)
----------
74491
SQL> alter system checkpoint;
System altered.
SQL> /
System altered.
dul 参数配置
[oracle@xifenfei dul]$ more init.dul
osd_big_endian_flag=false
osd_dba_file_bits=10
osd_c_struct_alignment=32
osd_file_leader_size=0
osd_word_size = 32
dc_columns=2000000
dc_tables=10000
dc_objects=1000000
dc_users=400
dc_segments=100000
control_file = control11.dul
db_block_size=8192
export_mode=false
compatible=11
BUFFER=10000000
LDR_ENCLOSE_CHAR=|
[oracle@xifenfei dul]$ more control11.dul
0 1 /u01/oracle/oradata/ora11g/system01.dbf
1 2 /u01/oracle/oradata/ora11g/sysaux01.dbf
2 3 /u01/oracle/oradata/ora11g/undotbs01.dbf
4 4 /u01/oracle/oradata/ora11g/users01.dbf
dul恢复11g数据库
[oracle@xifenfei dul]$ ./dul10
Data UnLoader: 10.2.0.5.13 - Internal Only - on Sat Aug 4 00:36:15 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"
Found db_id = 4185048347
Found db_name = ORA11G
DUL> bootstrap;
Probing file = 1, block = 520
. unloading table BOOTSTRAP$
DUL: Warning: block number is non zero but marked deferred trying to process it anyhow
60 rows unloaded
DUL: Warning: Dictionary cache DC_BOOTSTRAP is empty
Reading BOOTSTRAP.dat 60 entries loaded
Parsing Bootstrap$ contents
Generating dict.ddl for version 11
OBJ$: segobjno 18, file 1 block 240
TAB$: segobjno 2, tabno 1, file 1 block 144
COL$: segobjno 2, tabno 5, file 1 block 144
USER$: segobjno 10, tabno 1, file 1 block 208
Running generated file "@dict.ddl" to unload the dictionary tables
. unloading table OBJ$ 74493 rows unloaded
. unloading table TAB$ 2858 rows unloaded
. unloading table COL$ 93503 rows unloaded
. unloading table USER$ 88 rows unloaded
Reading USER.dat 88 entries loaded
Reading OBJ.dat 74493 entries loaded and sorted 74493 entries
Reading TAB.dat 2858 entries loaded
Reading COL.dat 93503 entries loaded and sorted 93503 entries
Reading BOOTSTRAP.dat 60 entries loaded
DUL: Warning: Recreating file "dict.ddl"
Generating dict.ddl for version 11
OBJ$: segobjno 18, file 1 block 240
TAB$: segobjno 2, tabno 1, file 1 block 144
COL$: segobjno 2, tabno 5, file 1 block 144
USER$: segobjno 10, tabno 1, file 1 block 208
TABPART$: segobjno 568, file 1 block 3872
INDPART$: segobjno 573, file 1 block 3912
TABCOMPART$: segobjno 590, file 1 block 4056
INDCOMPART$: segobjno 595, file 1 block 4096
TABSUBPART$: segobjno 580, file 1 block 3976
INDSUBPART$: segobjno 585, file 1 block 4016
IND$: segobjno 2, tabno 3, file 1 block 144
ICOL$: segobjno 2, tabno 4, file 1 block 144
LOB$: segobjno 2, tabno 6, file 1 block 144
COLTYPE$: segobjno 2, tabno 7, file 1 block 144
TYPE$: segobjno 495, tabno 1, file 1 block 3344
COLLECTION$: segobjno 495, tabno 2, file 1 block 3344
ATTRIBUTE$: segobjno 495, tabno 3, file 1 block 3344
LOBFRAG$: segobjno 601, file 1 block 4144
LOBCOMPPART$: segobjno 604, file 1 block 4168
UNDO$: segobjno 15, file 1 block 224
TS$: segobjno 6, tabno 2, file 1 block 176
PROPS$: segobjno 98, file 1 block 800
Running generated file "@dict.ddl" to unload the dictionary tables
. unloading table OBJ$
DUL: Warning: Recreating file "OBJ.ctl"
74493 rows unloaded
. unloading table TAB$
DUL: Warning: Recreating file "TAB.ctl"
2858 rows unloaded
. unloading table COL$
DUL: Warning: Recreating file "COL.ctl"
93503 rows unloaded
. unloading table USER$
DUL: Warning: Recreating file "USER.ctl"
88 rows unloaded
. unloading table TABPART$ 90 rows unloaded
. unloading table INDPART$ 106 rows unloaded
. unloading table TABCOMPART$ 1 row unloaded
. unloading table INDCOMPART$ 0 rows unloaded
. unloading table TABSUBPART$ 32 rows unloaded
. unloading table INDSUBPART$ 0 rows unloaded
. unloading table IND$ 5092 rows unloaded
. unloading table ICOL$ 7518 rows unloaded
. unloading table LOB$ 1251 rows unloaded
. unloading table COLTYPE$ 2967 rows unloaded
. unloading table TYPE$ 2872 rows unloaded
. unloading table COLLECTION$ 985 rows unloaded
. unloading table ATTRIBUTE$ 11127 rows unloaded
. unloading table LOBFRAG$ 1 row unloaded
. unloading table LOBCOMPPART$ 0 rows unloaded
. unloading table UNDO$ 21 rows unloaded
. unloading table TS$ 6 rows unloaded
. unloading table PROPS$ 36 rows unloaded
Reading USER.dat 88 entries loaded
Reading OBJ.dat 74493 entries loaded and sorted 74493 entries
Reading TAB.dat 2858 entries loaded
Reading COL.dat 93503 entries loaded and sorted 93503 entries
Reading TABPART.dat 90 entries loaded and sorted 90 entries
Reading TABCOMPART.dat 1 entries loaded and sorted 1 entries
Reading TABSUBPART.dat 32 entries loaded and sorted 32 entries
Reading INDPART.dat 106 entries loaded and sorted 106 entries
Reading INDCOMPART.dat 0 entries loaded and sorted 0 entries
Reading INDSUBPART.dat 0 entries loaded and sorted 0 entries
Reading IND.dat 5092 entries loaded
Reading LOB.dat
DUL: Warning: Increased the size of DC_LOBS from 1024 to 8192 entries
1251 entries loaded
Reading ICOL.dat 7518 entries loaded
Reading COLTYPE.dat 2967 entries loaded
Reading TYPE.dat 2872 entries loaded
Reading ATTRIBUTE.dat 11127 entries loaded
Reading COLLECTION.dat 985 entries loaded
Reading BOOTSTRAP.dat 60 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 6 entries loaded
Reading PROPS.dat 36 entries loaded
Database character set is ZHS16GBK
Database national character set is AL16UTF16
DUL> desc chf.t_xifenfei;
Table CHF.T_XIFENFEI
obj#= 75562, dataobj#= 75562, ts#= 4, file#= 4, block#=170
tab#= 0, segcols= 15, clucols= 0
Column information:
icol# 01 segcol# 01 OWNER len 30 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 02 segcol# 02 OBJECT_NAME len 128 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 03 segcol# 03 SUBOBJECT_NAME len 30 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 04 segcol# 04 OBJECT_ID len 22 type 2 NUMBER(0,-127)
icol# 05 segcol# 05 DATA_OBJECT_ID len 22 type 2 NUMBER(0,-127)
icol# 06 segcol# 06 OBJECT_TYPE len 19 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 07 segcol# 07 CREATED len 7 type 12 DATE
icol# 08 segcol# 08 LAST_DDL_TIME len 7 type 12 DATE
icol# 09 segcol# 09 TIMESTAMP len 19 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 10 segcol# 10 STATUS len 7 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 11 segcol# 11 TEMPORARY len 1 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 12 segcol# 12 GENERATED len 1 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 13 segcol# 13 SECONDARY len 1 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 14 segcol# 14 NAMESPACE len 22 type 2 NUMBER(0,-127)
icol# 15 segcol# 15 EDITION_NAME len 30 type 1 VARCHAR2 cs 852(ZHS16GBK)
DUL> unload table chf.t_xifenfei;
. unloading table T_XIFENFEI 74491 rows unloaded
通过一些列的dul 10测试,发现dul 10功能确实较9强大了很多.支持asm,支持11g,支持字符串换行+lob类型
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最权威、专业的Oracle案例资源汇总之学习笔记:Oracle dul数据挖掘 导出Oracle11G数据文件坏块中表中
原文唯一网址：http://www.oracleplus.net/arch/oracle-20160522-214.html