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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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
[[email protected] 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 [[email protected] 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 [[email protected] 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 [[email protected] 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 [[email protected] 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 [[email protected] 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 [[email protected] 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
[[email protected] 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 [[email protected] 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‘ ) [[email protected] 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‘ ) [[email protected] 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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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
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