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学习笔记:Oracle dul数据挖掘 使用DUL数据恢复软件恢复分区表中

时间:2016-05-24 22:56   来源:Oracle研究中心   作者:惜分飞   点击:

天萃荷净

使用Oracle dul数据恢复工具对Oracle数据库分区表中的数据进行恢复

创建SALES分区表案例

CREATE TABLE SALES 
( 
  PRODUCT_ID VARCHAR2(5), 
  SALES_DATE DATE, 
  SALES_COST NUMBER(10), 
  STATUS VARCHAR2(20) 
) 
PARTITION BY RANGE(SALES_DATE) 
  SUBPARTITION BY LIST (STATUS) 
  SUBPARTITION TEMPLATE 
  ( 
    SUBPARTITION SUB1 VALUES ('ACTIVE') , 
    SUBPARTITION SUB2 VALUES ('INACTIVE') 
  ) 
( 
  PARTITION P1 VALUES LESS THAN (TO_DATE('2003-01-01','YYYY-MM-DD')), 
  PARTITION P2 VALUES LESS THAN (TO_DATE('2003-03-01','YYYY-MM-DD'))
) 
/
INSERT INTO SALES VALUES('00001','01-Jan-02',100,'ACTIVE') 
/ 
INSERT INTO SALES VALUES('00002','01-Jan-01',200,'ACTIVE') 
/ 
INSERT INTO SALES VALUES('00003','01-Feb-03',300,'INACTIVE') 
/ 
INSERT INTO SALES VALUES('00004','04-Feb-03',300,'INACTIVE') 
/ 
INSERT INTO SALES VALUES('00005','04-Feb-02',300,'INACTIVE') 
/ 

查询结果

SQL> select * from sales;

PRODU SALES_DATE   SALES_COST STATUS
----- ------------ ---------- --------------------
00001 01-JAN-02           100 ACTIVE
00002 01-JAN-01           200 ACTIVE
00005 04-FEB-02           300 INACTIVE
00003 01-FEB-03           300 INACTIVE
00004 04-FEB-03           300 INACTIVE

SQL> select  * from sales PARTITION(p1);

PRODU SALES_DATE   SALES_COST STATUS
----- ------------ ---------- --------------------
00001 01-JAN-02           100 ACTIVE
00002 01-JAN-01           200 ACTIVE
00005 04-FEB-02           300 INACTIVE

SQL> select  * from sales PARTITION(p2);

PRODU SALES_DATE   SALES_COST STATUS
----- ------------ ---------- --------------------
00003 01-FEB-03           300 INACTIVE
00004 04-FEB-03           300 INACTIVE

SQL> select  * from sales SUBPARTITION(p1_sub1);

PRODU SALES_DATE   SALES_COST STATUS
----- ------------ ---------- --------------------
00001 01-JAN-02           100 ACTIVE
00002 01-JAN-01           200 ACTIVE

SQL> select  * from sales SUBPARTITION(p1_sub2);

PRODU SALES_DATE   SALES_COST STATUS
----- ------------ ---------- --------------------
00005 04-FEB-02           300 INACTIVE

SQL> select  * from sales SUBPARTITION(p2_sub1);

no rows selected

SQL> select  * from sales SUBPARTITION(p2_sub2);

PRODU SALES_DATE   SALES_COST STATUS
----- ------------ ---------- --------------------
00003 01-FEB-03           300 INACTIVE
00004 04-FEB-03           300 INACTIVE

启动dul

[oracle@xifenfei dul]$ ./dul

Data UnLoader: 10.2.0.5.20 - Internal Only - on Sat Jan 19 17:37:45 2013
with 64-bit io functions

Copyright (c) 1994 2013 Bernard van Duijnen All rights reserved.

 Strictly Oracle Internal Use Only


DUL: Warning: Recreating file "dul.log"
Reading USER.dat 91 entries loaded
Reading OBJ.dat 74764 entries loaded and sorted 74764 entries
Reading TAB.dat 2882 entries loaded
Reading COL.dat 94598 entries loaded and sorted 94598 entries
Reading SEG.dat 17 entries loaded
Reading EXT.dat 43 entries loaded and sorted 43 entries
Reading TABPART.dat 150 entries loaded and sorted 150 entries
Reading TABCOMPART.dat 3 entries loaded and sorted 3 entries
Reading TABSUBPART.dat 36 entries loaded and sorted 36 entries
Reading INDPART.dat 169 entries loaded and sorted 169 entries
Reading INDCOMPART.dat 0 entries loaded and sorted 0 entries
Reading INDSUBPART.dat 0 entries loaded and sorted 0 entries
Reading IND.dat 5150 entries loaded
Reading LOB.dat
DUL: Warning: Increased the size of DC_LOBS from 1024 to 8192 entries
 1286 entries loaded
Reading ICOL.dat 7569 entries loaded
Reading COLTYPE.dat 3003 entries loaded
Reading TYPE.dat 2872 entries loaded
Reading ATTRIBUTE.dat 11127 entries loaded
Reading COLLECTION.dat 985 entries loaded
Reading COMPATSEG.dat 0 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 10 entries loaded
Reading PROPS.dat 36 entries loaded
Database character set is ZHS16GBK
Database national character set is AL16UTF16
Found db_id = 4188950066
Found db_name = ORA11G

unload 语法

UNLOAD [TABLE]  [  schema_name . ]  table_name 
              [ PARTITION(  partition_name ) ]
              [ SUBPARTITION(  sub_partition_name ) ]
              [ (  column_definitions ) ]
              [  cluster_clause  ]
              [  storage_clause  ] ;

unload整个表

DUL> unload table chf.SALES;
. unloading table                     SALES
 . Unloading partition                      P1
 .   Unloading sub partition                 P1_SUB1
 .   Unloading sub partition                 P1_SUB2
 . Unloading partition                      P2
 .   Unloading sub partition                 P2_SUB1
 .   Unloading sub partition                 P2_SUB2
.           table SALES total        5 rows unloaded

[root@xifenfei dul]# ls -l CHF_SALES*
-rw-r--r-- 1 oracle oinstall 421 Jan 19 18:09 CHF_SALES.ctl
-rw-r--r-- 1 oracle oinstall 251 Jan 19 18:09 CHF_SALES.dat
[root@xifenfei dul]# more CHF_SALES.dat
|00001| |01-JAN-2002 AD 00:00:00| |100| |ACTIVE|
|00002| |01-JAN-2001 AD 00:00:00| |200| |ACTIVE|
|00005| |04-FEB-2002 AD 00:00:00| |300| |INACTIVE|
|00003| |01-FEB-2003 AD 00:00:00| |300| |INACTIVE|
|00004| |04-FEB-2003 AD 00:00:00| |300| |INACTIVE|

unload 分区表

DUL> unload table chf.SALES PARTITION(p1);
. unloading table                     SALES
 . Unloading partition                      P1
 .   Unloading sub partition                 P1_SUB1
 .   Unloading sub partition                 P1_SUB2
.           table SALES total        3 rows unloaded

[root@xifenfei dul]# ls -l CHF_SALES_P1*
-rw-r--r-- 1 oracle oinstall 424 Jan 19 18:10 CHF_SALES_P1.ctl
-rw-r--r-- 1 oracle oinstall 149 Jan 19 18:10 CHF_SALES_P1.dat
[root@xifenfei dul]# more CHF_SALES_P1.dat
|00001| |01-JAN-2002 AD 00:00:00| |100| |ACTIVE|
|00002| |01-JAN-2001 AD 00:00:00| |200| |ACTIVE|
|00005| |04-FEB-2002 AD 00:00:00| |300| |INACTIVE|

unload 子分区表

DUL> unload table chf.SALES SUBPARTITION(p2_SUB2);
. unloading table                     SALES
 . Unloading partition                      P1
 . Unloading partition                      P2
 .   Unloading sub partition                 P2_SUB2
.           table SALES total        2 rows unloaded

[root@xifenfei dul]# ls -l CHF_SALES_P2_SUB2*
-rw-r--r-- 1 oracle oinstall 429 Jan 19 18:14 CHF_SALES_P2_SUB2.ctl
-rw-r--r-- 1 oracle oinstall 102 Jan 19 18:14 CHF_SALES_P2_SUB2.dat
[root@xifenfei dul]# more CHF_SALES_P2_SUB2.dat
|00003| |01-FEB-2003 AD 00:00:00| |300| |INACTIVE|
|00004| |04-FEB-2003 AD 00:00:00| |300| |INACTIVE|

验证控制文件

[root@xifenfei dul]# ls -l CHF_SALES*
-rw-r--r-- 1 oracle oinstall 421 Jan 19 18:09 CHF_SALES.ctl
-rw-r--r-- 1 oracle oinstall 251 Jan 19 18:09 CHF_SALES.dat
-rw-r--r-- 1 oracle oinstall 424 Jan 19 18:10 CHF_SALES_P1.ctl
-rw-r--r-- 1 oracle oinstall 149 Jan 19 18:10 CHF_SALES_P1.dat
-rw-r--r-- 1 oracle oinstall 429 Jan 19 18:14 CHF_SALES_P2_SUB2.ctl
-rw-r--r-- 1 oracle oinstall 102 Jan 19 18:14 CHF_SALES_P2_SUB2.dat
[root@xifenfei dul]# more CHF_SALES.ctl
load data
CHARACTERSET ZHS16GBK
infile 'CHF_SALES.dat'
insert
into table "CHF"."SALES"
fields terminated by whitespace
(
  "PRODUCT_ID"                       CHAR(5) enclosed by X'7C'       
 ,"SALES_DATE"                       DATE "DD-MON-YYYY AD HH24:MI:SS" enclosed by X'7C'
 ,"SALES_COST"                       CHAR(3) enclosed by X'7C'       
 ,"STATUS"                           CHAR(8) enclosed by X'7C'       
)
[root@xifenfei dul]# more CHF_SALES_P1.ctl
load data
CHARACTERSET ZHS16GBK
infile 'CHF_SALES_P1.dat'
insert
into table "CHF"."SALES"
fields terminated by whitespace
(
  "PRODUCT_ID"                       CHAR(5) enclosed by X'7C'       
 ,"SALES_DATE"                       DATE "DD-MON-YYYY AD HH24:MI:SS" enclosed by X'7C'
 ,"SALES_COST"                       CHAR(3) enclosed by X'7C'       
 ,"STATUS"                           CHAR(8) enclosed by X'7C'       
)
[root@xifenfei dul]# more CHF_SALES_P2_SUB2.ctl
load data
CHARACTERSET ZHS16GBK
infile 'CHF_SALES_P2_SUB2.dat'
insert
into table "CHF"."SALES"
fields terminated by whitespace
(
  "PRODUCT_ID"                       CHAR(5) enclosed by X'7C'       
 ,"SALES_DATE"                       DATE "DD-MON-YYYY AD HH24:MI:SS" enclosed by X'7C'
 ,"SALES_COST"                       CHAR(3) enclosed by X'7C'       
 ,"STATUS"                           CHAR(8) enclosed by X'7C'       
)

这里证明所有的控制文件中的表结构都是整个表的结构,而不是分区表,在实际处理过程中,可以考虑交换分区来实现
 

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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 使用DUL数据恢复软件恢复分区表中

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关键词:

Oracle dul数据挖掘

使用DUL数据恢复软件恢复分区表中的数据