月归档：二月 2013

通过rowid获取segment header坏块数据

发表于 2013 年 2 月 19 日 由 惜分飞

在上篇(table中各种坏块对select/dml操作影响)中说到如果segment header异常了，不能通过ctas来获得相关数据，在群的讨论中，EZIO说到可以通过rowid方式来获得相关数据，通过测试证明，确实可以通过该方法获得数据，以后遇到此类错误，大家也不必惊慌.
创建测试表

SQL> create table t_xifenfei
  2  as
  3  select * from dba_objects where object_id is not null;


SQL> alter table t_xifenfei
  2  add constraint PK_t_xifenfei primary key (object_id)
  3  ;

Table altered.

SQL> alter system checkpoint;

System altered.

SQL> select count(*) from chf.t_xifenfei;

  COUNT(*)
----------
     74762

SQL> select header_file,header_block from 
  2  DBA_SEGments where segment_name='T_XIFENFEI' AND OWNER='CHF';

HEADER_FILE HEADER_BLOCK
----------- ------------
          4          170

dump block

alter system dump datafile 4 block 170;

Dump of buffer cache at level 4 for tsn=4 rdba=16777386
Block dump from disk:
buffer tsn: 4 rdba: 0x010000aa (4/170)
scn: 0x0b8c.3c0092e4 seq: 0x01 flg: 0x04 tail: 0x91e42301
frmt: 0x02 chkval: 0xa531 type: 0x23=PAGETABLE SEGMENT HEADER

通过header_block和dump block确定block 170即为PAGETABLE SEGMENT HEADER

bbed制造SEGMENT HEADER坏块

BBED> set block 170
        BLOCK#          170

BBED> set offset 8188
        OFFSET          8188

BBED> d
 File: /u01/oracle/oradata/ora11g/users01.dbf (0)
 Block: 170              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0123e492 

 <32 bytes per line>

BBED> m /x 0123e491
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/oracle/oradata/ora11g/users01.dbf (0)
 Block: 170              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0123e491 

 <32 bytes per line>

BBED> sum apply 
Check value for File 0, Block 170:
current = 0xa531, required = 0xa531

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/oracle/oradata/ora11g/users01.dbf
BLOCK = 170

Block 170 is corrupt
Corrupt block relative dba: 0x010000aa (file 0, block 170)
Fractured block found during verification
Data in bad block:
 type: 35 format: 2 rdba: 0x010000aa
 last change scn: 0x0b8c.3c0092e4 seq: 0x1 flg: 0x04
 spare1: 0x0 spare2: 0x0 spare3: 0x0
 consistency value in tail: 0x91e42301
 check value in block header: 0xa531
 computed block checksum: 0x0


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing   (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 1
Total Blocks Influx           : 2
Message 531 not found;  product=RDBMS; facility=BBED

测试segment header坏块后select操作

SQL> select * from chf.t_xifenfei;
select * from chf.t_xifenfei
                         *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 4, block # 170)
ORA-01110: data file 4: '/u01/oracle/oradata/ora11g/users01.dbf'

SQL> select /*+index(t PK_T_XIFENFEI)*/  count(rowid) from chf.t_xifenfei t;

COUNT(ROWID)
------------
       74762

基于rowid获取segment header 坏块对象数据

SQL> create table chf.bad_rows (table_name varchar2(60),
   2 row_id rowid, oracle_error_code number);

Table created.

SQL> DECLARE
  2   TYPE RowIDTab IS TABLE OF ROWID INDEX BY BINARY_INTEGER;
  3   CURSOR c1 IS  select /*+index(t PK_T_XIFENFEI)*/ rowid from chf.t_xifenfei t;
  4   r RowIDTab;
  5   rows  NATURAL := 20000;
  6   bad_rows number := 0 ;
  7   errors number;
  8   error_code number;
  9   myrowid rowid;
 10  BEGIN
 11   OPEN c1;
 12   LOOP
 13     FETCH  c1 BULK COLLECT INTO r LIMIT rows;
 14     EXIT WHEN r.count=0;
 15     BEGIN
 16      FORALL i IN r.FIRST..r.LAST SAVE EXCEPTIONS
 17       insert into chf.t_xifenfei_new
 18       select /*+ ROWID(A) */ *
 19       from chf.t_xifenfei A where rowid = r(i);
 20     EXCEPTION
 21     when OTHERS then
 22      BEGIN
 23       errors := SQL%BULK_EXCEPTIONS.COUNT;
 24       FOR err1 IN 1..errors LOOP
 25           error_code := SQL%BULK_EXCEPTIONS(err1).ERROR_CODE;
 26           myrowid := r(SQL%BULK_EXCEPTIONS(err1).ERROR_INDEX);
 27           bad_rows := bad_rows + 1;
 28           insert into chf.bad_rows values('chf.t_xifenfei',myrowid, error_code);
 29       END LOOP;
 30       END;
 31     END;
 32    commit;
 33   END LOOP;
 34   commit;
 35   CLOSE c1;
 36   dbms_output.put_line('Total Bad Rows: '||bad_rows);
 37  END;
 38  /
Total Bad Rows: 0

PL/SQL procedure successfully completed.

SQL> select count(*) from chf.t_xifenfei_new;

  COUNT(*)
----------
     74762

通过上面pl/sql，基于rowid成功获得segment header 异常对象中的所有数据记录.如果没有主键的表出现该问题,可以参考:使用plsql抢救数据

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table中各种坏块对select/dml操作影响

发表于 2013 年 2 月 18 日 由 惜分飞

在春节前写过table中各种类型block坏块是否能被跳过,本来准备节前写完它的姊妹篇关于table中各种blog如果出现坏块,对select/dml操作影响,因为回家一些事情给耽误了,今天补上该文章,这篇文章主要基于试验测试为主,没有从相关block原理上进行分析,如果有时间,后续文章从原理上来分析为什么这些select/dml操作不能执行
创建测试表

SQL> create table t_xifenfei as
  2  select * from dba_objects where rownum<10;

Table created.

SQL> select count(*) from chf.t_xifenfei;

  COUNT(*)
----------
         9

SQL> select
  2  dbms_rowid.rowid_relative_fno(rowid)rel_fno,
  3       max(dbms_rowid.rowid_block_number(rowid)) max_block,
  4       min(dbms_rowid.rowid_block_number(rowid)) min_block
  5       from chf.t_xifenfei
  6       group by dbms_rowid.rowid_relative_fno(rowid);

   REL_FNO  MAX_BLOCK  MIN_BLOCK
---------- ---------- ----------
         4        171        171

SQL> select EXTENT_ID,FILE_ID,BLOCK_ID,blocks from dba_extents where owner='CHF'
  2   AND SEGMENT_NAME='T_XIFENFEI';

 EXTENT_ID    FILE_ID   BLOCK_ID     BLOCKS
---------- ---------- ---------- ----------
         0          4        168          8

SQL> select SEGMENT_NAME,HEADER_FILE,HEADER_BLOCK,blocks,extents from DBA_SEGMENTS
  2  WHERE OWNER='CHF' AND SEGMENT_NAME='T_XIFENFEI';

SEGMENT_NAME                   HEADER_FILE HEADER_BLOCK     BLOCKS    EXTENTS
------------------------------ ----------- ------------ ---------- ----------
T_XIFENFEI                               4          170          8          1

通过alter system dump datafile 4 block n得出相关block数据块类型
168为FIRST LEVEL BITMAP BLOCK
169为SECOND LEVEL BITMAP BLOCK
170为PAGETABLE SEGMENT HEADER
171为trans data

处理block 168

--制造坏块
BBED> set block 168
        BLOCK#          168

BBED> set offset 8188
        OFFSET          8188

BBED> d   
 File: /u01/oracle/oradata/ora11g/users01.dbf (0)
 Block: 168              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0320d14f 

 <32 bytes per line>

BBED> m /x 0320d14e
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/oracle/oradata/ora11g/users01.dbf (0)
 Block: 168              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0320d14e 

 <32 bytes per line>

BBED> sum apply
Check value for File 0, Block 168:
current = 0xf60b, required = 0xf60b

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/oracle/oradata/ora11g/users01.dbf
BLOCK = 168

Block 168 is corrupt
Corrupt block relative dba: 0x010000a8 (file 0, block 168)
Fractured block found during verification
Data in bad block:
 type: 32 format: 2 rdba: 0x010000a8
 last change scn: 0x0b8c.3bff4fd1 seq: 0x3 flg: 0x04
 spare1: 0x0 spare2: 0x0 spare3: 0x0
 consistency value in tail: 0x4ed12003
 check value in block header: 0xf60b
 computed block checksum: 0x0


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing   (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 1
Total Blocks Influx           : 2
Message 531 not found;  product=RDBMS; facility=BBED

--select操作
SQL> select count(*) from chf.t_xifenfei;

  COUNT(*)
----------
         9
--dml操作
SQL> delete from chf.t_xifenfei where rownum<3;

2 rows deleted.

----注意update操作
SQL> update chf.t_xifenfei set object_name='www.xifenfei.com';

7 rows updated.

SQL> insert into chf.t_xifenfei select * from dba_objects where rownum=1;
insert into chf.t_xifenfei select * from dba_objects where rownum=1
                *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 4, block # 168)
ORA-01110: data file 4: '/u01/oracle/oradata/ora11g/users01.dbf'

这里证明对于FIRST LEVEL BITMAP BLOCK,在delete,select操作正常，insert操作异常，update操作待定(update操作不一定能够立马展示效果)

处理block 169

--标记坏块
BBED> set block 169
        BLOCK#          169

BBED> set offset 8188
        OFFSET          8188

BBED> d
 File: /u01/oracle/oradata/ora11g/users01.dbf (0)
 Block: 169              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0221ce4f 

 <32 bytes per line>

BBED> m /x 0221ce4e
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/oracle/oradata/ora11g/users01.dbf (0)
 Block: 169              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0221ce4e 

 <32 bytes per line>

BBED> sum apply
Check value for File 0, Block 169:
current = 0x9d2f, required = 0x9d2f

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/oracle/oradata/ora11g/users01.dbf
BLOCK = 169

Block 169 is corrupt
Corrupt block relative dba: 0x010000a9 (file 0, block 169)
Fractured block found during verification
Data in bad block:
 type: 33 format: 2 rdba: 0x010000a9
 last change scn: 0x0b8c.3bff4fce seq: 0x2 flg: 0x04
 spare1: 0x0 spare2: 0x0 spare3: 0x0
 consistency value in tail: 0x4ece2102
 check value in block header: 0x9d2f
 computed block checksum: 0x0


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing   (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 1
Total Blocks Influx           : 2
Message 531 not found;  product=RDBMS; facility=BBED

--select操作
SQL> select count(*) from chf.t_xifenfei;

  COUNT(*)
----------
         9

--dml操作
SQL> delete from chf.t_xifenfei where rownum<2;

1 row deleted.

----注意update操作
SQL> update chf.t_xifenfei set object_name='www.xifenfei.com';

9 rows updated.

SQL> alter table t_xifenfei modify EDITION_NAME varchar2(4000);

Table altered.

SQL> update t_xifenfei set EDITION_NAME=lpad('www.xifenfei.com', 4000, '0');
update t_xifenfei set EDITION_NAME=lpad('www.xifenfei.com', 4000, '0')
       *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 4, block # 169)
ORA-01110: data file 4: '/u01/oracle/oradata/ora11g/users01.dbf'

SQL> insert into chf.t_xifenfei 
  2  select * from dba_objects where rownum<2;
insert into chf.t_xifenfei
                *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 4, block # 169)
ORA-01110: data file 4: '/u01/oracle/oradata/ora11g/users01.dbf'

SECOND LEVEL BITMAP BLOCK在delete,select操作正常，insert操作异常，update操作分情况(如果更新的列字符串交短，可能不报错，如果更新的字符串较长可能报错)

处理block 170

--标记坏块
BBED> SET BLOCK 170
        BLOCK#          170

BBED> set offset 8188
        OFFSET          8188

BBED> d
 File: /u01/oracle/oradata/ora11g/users01.dbf (0)
 Block: 170              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0223b91b 

 <32 bytes per line>

BBED> m /x  0223b91a
 File: /u01/oracle/oradata/ora11g/users01.dbf (0)
 Block: 170              Offsets: 8188 to 8191           Dba:0x00000000
------------------------------------------------------------------------
 0223b91a 

 <32 bytes per line>

BBED> sum apply 
Check value for File 0, Block 170:
current = 0xb7d4, required = 0xb7d4

BBED> verify
DBVERIFY - Verification starting
FILE = /u01/oracle/oradata/ora11g/users01.dbf
BLOCK = 170

Block 170 is corrupt
Corrupt block relative dba: 0x010000aa (file 0, block 170)
Fractured block found during verification
Data in bad block:
 type: 35 format: 2 rdba: 0x010000aa
 last change scn: 0x0b8c.3c001bb9 seq: 0x2 flg: 0x04
 spare1: 0x0 spare2: 0x0 spare3: 0x0
 consistency value in tail: 0x1ab92302
 check value in block header: 0xb7d4
 computed block checksum: 0x0


DBVERIFY - Verification complete

Total Blocks Examined         : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing   (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing   (Index): 0
Total Blocks Empty            : 0
Total Blocks Marked Corrupt   : 1
Total Blocks Influx           : 2
Message 531 not found;  product=RDBMS; facility=BBED

--select操作
SQL> select count(*) from chf.t_xifenfei;
select count(*) from chf.t_xifenfei
                         *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 4, block # 170)
ORA-01110: data file 4: '/u01/oracle/oradata/ora11g/users01.dbf'

--dml操作
SQL> update chf.t_xifenfei where object_name='www.xifenfei.com';
update chf.t_xifenfei where object_name='www.xifenfei.com'
                      *
ERROR at line 1:
ORA-00971: missing SET keyword


SQL> update chf.t_xifenfei set object_name='www.xifenfei.com';
update chf.t_xifenfei set object_name='www.xifenfei.com'
           *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 4, block # 170)
ORA-01110: data file 4: '/u01/oracle/oradata/ora11g/users01.dbf'


SQL> delete from chf.t_xifenfei where rownum<2;
delete from chf.t_xifenfei where rownum<2
                *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 4, block # 170)
ORA-01110: data file 4: '/u01/oracle/oradata/ora11g/users01.dbf'

PAGETABLE SEGMENT HEADER异常的时候，数据库包括select,update,delete,insert操作都不能进行

结果汇总
1.BITMAP BLOCK异常的时候，select/delete操作可以正常进行，insert操作异常，update操作可能异常也可能正常
2.SEGMENT HEADER异常的时候，数据库包括select,update,delete,insert操作都不能进行
3.对于这些特殊的block出现坏块，如果有rman备份，从10g开始可以通过rman blockrecover来修复
4.如果没有rman备份,可以BITMAP BLOCK可以类似ctas重建,SEGMENT HEADER可以通过dul scan extent抽取数据
5.对于trans data太过于常见，而且event就可以跳过,在以前的文章中说过，不再讲述

发表在 Oracle | 评论关闭

dul处理分区表

发表于 2013 年 2 月 18 日 由 惜分飞

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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