oracle 11g expdp工具的query参数使用

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实际生产中导数据时可能会需要导部分数据到测试库上，expdp的query参数就可以完成这样的需求。

数据库版本

zx@ORCL>select * from v$version;

BANNER

--------------------------------------------------------------------------------

Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

PL/sql Release 11.2.0.4.0 - Production

CORE11.2.0.4.0Production

TNS for Linux: Version 11.2.0.4.0 - Production

NLSRTL Version 11.2.0.4.0 - Production

创建测试表

zx@ORCL>create table e1 (id number,name varchar2(20));

Table created.

zx@ORCL>create table e2 (id number,birthday date);

Table created.

插入测试数据

zx@ORCL>insert into e1 select level,lpad(level,20,'*') from dual connect by level <= 100;

100 rows created.

zx@ORCL>commit;

Commit complete.

zx@ORCL>insert into e2 select level,sysdate-50+level from dual connect by level <= 100;

100 rows created.

zx@ORCL>commit;

Commit complete.

创建目录

zx@ORCL>create directory dir as '/home/oracle/';

Directory created.

zx@ORCL>host

测试使用query导出

[oracle@rhel6 ~]$ expdp zx/zx directory=dir dumpfile=e1.dmp tables=zx.e1 query=zx.e1:\"where id<=50\"

bash: =50": No such file or directory

Export: Release 11.2.0.4.0 - Production on Thu Jul 21 14:23:11 2016

Copyright (c) 1982,2011,Oracle and/or its affiliates. All rights reserved.

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

With the Partitioning,OLAP,Data Mining and Real Application Testing options

Starting "ZX"."SYS_EXPORT_TABLE_01": zx/******** directory=dir dumpfile=e1.dmp tables=zx.e1 query=zx.e1:"where id<=50"

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 64 KB

Processing object type TABLE_EXPORT/TABLE/TABLE

. . exported "ZX"."E1" 6.757 KB 50 rows

Master table "ZX"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded

******************************************************************************

Dump file set for ZX.SYS_EXPORT_TABLE_01 is:

/home/oracle/e1.dmp

Job "ZX"."SYS_EXPORT_TABLE_01" successfully completed at Thu Jul 21 14:23:26 2016 elapsed 0 00:00:11

exit

查询scn号

zx@ORCL>select dbms_flashback.get_system_change_number from dual;

GET_SYSTEM_CHANGE_NUMBER

------------------------

2179047

zx@ORCL>select count(*) from e1;

COUNT(*)

----------

100

删除部分数据

zx@ORCL>delete from e1 where id<20;

19 rows deleted.

zx@ORCL>commit;

Commit complete.

zx@ORCL>host

测试query及flashback_scn

[oracle@rhel6 ~]$ expdp zx/zx directory=dir dumpfile=e1_1.dmp tables=zx.e1 query=zx.e1:\"where id\<=50\" flashback_scn=2179047

Export: Release 11.2.0.4.0 - Production on Thu Jul 21 14:25:41 2016

Copyright (c) 1982,Data Mining and Real Application Testing options

Starting "ZX"."SYS_EXPORT_TABLE_01": zx/******** directory=dir dumpfile=e1_1.dmp tables=zx.e1 query=zx.e1:"where id<=50" flashback_scn=2179047

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 64 KB

Processing object type TABLE_EXPORT/TABLE/TABLE

. . exported "ZX"."E1" 6.757 KB 50 rows

Master table "ZX"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded

******************************************************************************

Dump file set for ZX.SYS_EXPORT_TABLE_01 is:

/home/oracle/e1_1.dmp

Job "ZX"."SYS_EXPORT_TABLE_01" successfully completed at Thu Jul 21 14:25:49 2016 elapsed 0 00:00:06

[oracle@rhel6 ~]$ exit

exit

测试复杂query导出

zx@ORCL>select count(*) from e1 where id in( select id from e2 where birthday<sysdate);

COUNT(*)

----------

31

[oracle@rhel6 ~]$ expdp zx/zx directory=dir dumpfile=e1_2.dmp tables=zx.e1 query=zx.e1:\"where id in \( select id from e2 where birthday\<sysdate\)\"

Export: Release 11.2.0.4.0 - Production on Thu Jul 21 14:31:04 2016

Copyright (c) 1982,Data Mining and Real Application Testing options

Starting "ZX"."SYS_EXPORT_TABLE_01": zx/******** directory=dir dumpfile=e1_2.dmp tables=zx.e1 query=zx.e1:"where id in ( select id from e2 where birthday<sysdate)"

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 64 KB

Processing object type TABLE_EXPORT/TABLE/TABLE

. . exported "ZX"."E1" 6.242 KB 31 rows

Master table "ZX"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded

******************************************************************************

Dump file set for ZX.SYS_EXPORT_TABLE_01 is:

/home/oracle/e1_2.dmp

Job "ZX"."SYS_EXPORT_TABLE_01" successfully completed at Thu Jul 21 14:31:12 2016 elapsed 0 00:00:06

[oracle@rhel6 ~]$ exit

exit

zx@ORCL>host

测试复杂query及flashback_scn导出

[oracle@rhel6 ~]$ expdp zx/zx directory=dir dumpfile=e1_3.dmp tables=zx.e1 query=zx.e1:\"where id in \( select id from e2 where birthday\<sysdate\)\" flashback_scn=2179047

Export: Release 11.2.0.4.0 - Production on Thu Jul 21 14:32:07 2016

Copyright (c) 1982,Data Mining and Real Application Testing options

Starting "ZX"."SYS_EXPORT_TABLE_01": zx/******** directory=dir dumpfile=e1_3.dmp tables=zx.e1 query=zx.e1:"where id in ( select id from e2 where birthday<sysdate)" flashback_scn=2179047

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 64 KB

Processing object type TABLE_EXPORT/TABLE/TABLE

. . exported "ZX"."E1" 6.757 KB 50 rows

Master table "ZX"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded

******************************************************************************

Dump file set for ZX.SYS_EXPORT_TABLE_01 is:

/home/oracle/e1_3.dmp

Job "ZX"."SYS_EXPORT_TABLE_01" successfully completed at Thu Jul 21 14:32:14 2016 elapsed 0 00:00:06

[oracle@rhel6 ~]$ exit

exit

删除e2部分数据

zx@ORCL>delete from e2 where id>25 and id<30;

4 rows deleted.

zx@ORCL>commit;

Commit complete.

zx@ORCL>select count(*) from e1 where id in( select id from e2 where birthday<sysdate);

COUNT(*)

----------

27

测试query及flashback_scn，结果只是对e1应用flashback_snc，e2没有应用

zx@ORCL>host

[oracle@rhel6 ~]$ expdp zx/zx directory=dir dumpfile=e1_4.dmp tables=zx.e1 query=zx.e1:\"where id in \( select id from e2 where birthday\<sysdate\)\" flashback_scn=2179047

Export: Release 11.2.0.4.0 - Production on Thu Jul 21 14:33:55 2016

Copyright (c) 1982,Data Mining and Real Application Testing options

Starting "ZX"."SYS_EXPORT_TABLE_01": zx/******** directory=dir dumpfile=e1_4.dmp tables=zx.e1 query=zx.e1:"where id in ( select id from e2 where birthday<sysdate)" flashback_scn=2179047

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 64 KB

Processing object type TABLE_EXPORT/TABLE/TABLE

. . exported "ZX"."E1" 6.648 KB 46 rows

Master table "ZX"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded

******************************************************************************

Dump file set for ZX.SYS_EXPORT_TABLE_01 is:

/home/oracle/e1_4.dmp

Job "ZX"."SYS_EXPORT_TABLE_01" successfully completed at Thu Jul 21 14:34:03 2016 elapsed 0 00:00:06

[oracle@rhel6 ~]$ exit

exit

使e1和e2都应用flashback_scn

zx@ORCL>select count(*) from e1 where id in( select id from e2 as of scn2179047where birthday<sysdate);

COUNT(*)

----------

31

zx@ORCL>host

[oracle@rhel6 ~]$ expdp zx/zx directory=dir dumpfile=e1_5.dmp tables=zx.e1 query=zx.e1:\"where id in \( select id from e2 as of scn2179047where birthday\<sysdate\)\" flashback_scn=2179047

Export: Release 11.2.0.4.0 - Production on Thu Jul 21 14:39:52 2016

Copyright (c) 1982,Data Mining and Real Application Testing options

Starting "ZX"."SYS_EXPORT_TABLE_01": zx/******** directory=dir dumpfile=e1_5.dmp tables=zx.e1 query=zx.e1:"where id in ( select id from e2 as of scn2179047where birthday<sysdate)" flashback_scn=2179047

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 64 KB

Processing object type TABLE_EXPORT/TABLE/TABLE

. . exported "ZX"."E1" 6.757 KB 50 rows

Master table "ZX"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded

******************************************************************************

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