1 table_exists_action参数说明

使用imp进行数据导入时，若表已经存在，要先drop掉表，再进行导入。

而使用impdp完成数据库导入时，若表已经存在，有四种的处理方式：

1)  skip：默认操作

2)  replace：先drop表，然后创建表，最后插入数据

3)  append：在原来数据的基础上增加数据

4)  truncate：先truncate，然后再插入数据

2 实验预备

2.1 sys用户创建目录对象，并授权

SQL> create directory dir_dump as '/home/oracle';

Directory created

SQL> grant read, write on directory dir_dump to tuser;

Grant succeeded

2.2 导出数据

[oracle@cent4 ~]$ expdp tuser/tuser directory=dir_dump dumpfile=expdp.dmp schemas=tuser;

Export: Release 10.2.0.1.0 - 64bit Production on 星期五, 06 1月, 2012 20:44:22

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Starting "TUSER"."SYS_EXPORT_SCHEMA_01":  tuser/******** directory=dir_dump dumpfile=expdp.dmp schemas=tuser

Estimate in progress using BLOCKS method...

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 128 KB

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

Processing object type SCHEMA_EXPORT/TABLE/TABLE

Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX

Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT

Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS

Processing object type SCHEMA_EXPORT/TABLE/COMMENT

. . exported "TUSER"."TAB1"                               5.25 KB       5 rows

. . exported "TUSER"."TAB2"                              5.296 KB      10 rows

Master table "TUSER"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded

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

Dump file set for TUSER.SYS_EXPORT_SCHEMA_01 is:

/home/oracle/expdp.dmp

Job "TUSER"."SYS_EXPORT_SCHEMA_01" successfully completed at 20:47:29

2.3 查看已有两张表的数据

SQL> select * from tab1;

A   B

--- ----

1   11

2   22

3   33

4   44

5   55

SQL> select * from tab2;

A   B

--- ----

1   aa

2   bb

3   cc

4   dd

5   ee

6   ff

7   gg

8   hh

9   ii

10  jj

10 rows selected

3 replace

3.1 插入数据

SQL> insert into tab1 (a, b) values (6, 66);

1 row inserted

SQL> commit;

Commit complete

SQL> select * from tab1;

A   B

--- ----

1   11

2   22

3   33

4   44

5   55

6   66

6 rows selected

3.2 导入数据

[oracle@cent4 ~]$ impdp tuser/tuser directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=replace;

Import: Release 10.2.0.1.0 - 64bit Production on 星期五, 06 1月, 2012 20:53:09

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Master table "TUSER"."SYS_IMPORT_SCHEMA_01" successfully loaded/unloaded

Starting "TUSER"."SYS_IMPORT_SCHEMA_01":  tuser/******** directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=replace

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

Processing object type SCHEMA_EXPORT/TABLE/TABLE

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

. . imported "TUSER"."TAB1"                               5.25 KB       5 rows

. . imported "TUSER"."TAB2"                              5.296 KB      10 rows

Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX

Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT

Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS

Job "TUSER"."SYS_IMPORT_SCHEMA_01" successfully completed at 20:53:25

3.3 再查看数据

SQL> select * from tab1;

A   B

--- ----

1   11

2   22

3   33

4   44

5   55

查看数据，这时没有第六条数据。

另外新建的表，在备份中没有，这个表并不会被覆盖。

4 skip

drop表tab1，tab2。

[oracle@cent4 ~]$ impdp tuser/tuser directory=dir_dump dumpfile=expdp.dmp schemas=tuser;

Import: Release 10.2.0.1.0 - 64bit Production on 星期五, 06 1月, 2012 21:34:20

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Master table "TUSER"."SYS_IMPORT_SCHEMA_01" successfully loaded/unloaded

Starting "TUSER"."SYS_IMPORT_SCHEMA_01":  tuser/******** directory=dir_dump dumpfile=expdp.dmp schemas=tuser

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

Processing object type SCHEMA_EXPORT/TABLE/TABLE

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

. . imported "TUSER"."TAB1"                               5.25 KB       5 rows

. . imported "TUSER"."TAB2"                              5.296 KB      10 rows

Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX

Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT

Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS

Job "TUSER"."SYS_IMPORT_SCHEMA_01" successfully completed at 21:34:25

注意：即使表结构发生了变化，只要表名不发生变化。导入这个表时，就会被跳过。

5 append

5.1 删除部分数据

SQL> delete tab1 where a = 1;

1 row deleted

SQL> delete tab2 where a = 2;

1 row deleted

SQL> commit;

Commit complete

SQL> select * from tab1;

A   B

--- ----

2   22

3   33

4   44

5   55

SQL> select * from tab2;

A   B

--- ----

1   aa

3   cc

4   dd

5   ee

6   ff

7   gg

8   hh

9   ii

10  jj

9 rows selected

5.2 导入数据

[oracle@cent4 ~]$ impdp tuser/tuser directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=append;

Import: Release 10.2.0.1.0 - 64bit Production on 星期五, 06 1月, 2012 21:50:40

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Master table "TUSER"."SYS_IMPORT_SCHEMA_01" successfully loaded/unloaded

Starting "TUSER"."SYS_IMPORT_SCHEMA_01":  tuser/******** directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=append

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

Processing object type SCHEMA_EXPORT/TABLE/TABLE

ORA-39152: Table "TUSER"."TAB1" exists. Data will be appended to existing table but all dependent metadata will be skipped due to table_exists_action of append

ORA-39152: Table "TUSER"."TAB2" exists. Data will be appended to existing table but all dependent metadata will be skipped due to table_exists_action of append

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

ORA-31693: Table data object "TUSER"."TAB1" failed to load/unload and is being skipped due to error:

ORA-00001: unique constraint (TUSER.PK_TAB1) violated

ORA-31693: Table data object "TUSER"."TAB2" failed to load/unload and is being skipped due to error:

ORA-00001: unique constraint (TUSER.PK_TAB2) violated

Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX

Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT

Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS

Job "TUSER"."SYS_IMPORT_SCHEMA_01" completed with 4 error(s) at 21:50:45

注意：只要append数据出错，比如唯一键错误，这时什么数据都不能插入了。

5.3 修改表结构

SQL> alter table tab1 add (C varchar2(4));

Table altered

5.4 再导入数据

[oracle@cent4 ~]$ impdp tuser/tuser directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=append;

Import: Release 10.2.0.1.0 - 64bit Production on 星期五, 06 1月, 2012 21:59:19

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Master table "TUSER"."SYS_IMPORT_SCHEMA_01" successfully loaded/unloaded

Starting "TUSER"."SYS_IMPORT_SCHEMA_01":  tuser/******** directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=append

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

Processing object type SCHEMA_EXPORT/TABLE/TABLE

ORA-39152: Table "TUSER"."TAB1" exists. Data will be appended to existing table but all dependent metadata will be skipped due to table_exists_action of append

ORA-39152: Table "TUSER"."TAB2" exists. Data will be appended to existing table but all dependent metadata will be skipped due to table_exists_action of append

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

ORA-39014: One or more workers have prematurely exited.

ORA-39029: worker 1 with process name "DW01" prematurely terminated

ORA-31671: Worker process DW01 had an unhandled exception.

ORA-00600: internal error code, arguments: [qerxtAgentOpen_911], [3], [2], [], [], [], [], []

ORA-06512: at "SYS.KUPW$WORKER", line 1345

ORA-06512: at line 2

Job "TUSER"."SYS_IMPORT_SCHEMA_01" stopped due to fatal error at 21:59:57

这时居然出现600错误。

6 truncate

6.1 插入部分数据

SQL> insert into tab1 (a, b) values (6, 66);

1 row inserted

SQL> commit;

Commit complete

6.2 导入数据

[oracle@cent4 ~]$ impdp tuser/tuser directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=truncate;

Import: Release 10.2.0.1.0 - 64bit Production on 星期五, 06 1月, 2012 22:18:21

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Master table "TUSER"."SYS_IMPORT_SCHEMA_03" successfully loaded/unloaded

Starting "TUSER"."SYS_IMPORT_SCHEMA_03":  tuser/******** directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=truncate

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

Processing object type SCHEMA_EXPORT/TABLE/TABLE

ORA-39153: Table "TUSER"."TAB1" exists and has been truncated. Data will be loaded but all dependent metadata will be skipped due to table_exists_action of truncate

ORA-39153: Table "TUSER"."TAB2" exists and has been truncated. Data will be loaded but all dependent metadata will be skipped due to table_exists_action of truncate

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

. . imported "TUSER"."TAB1"                               5.25 KB       5 rows

. . imported "TUSER"."TAB2"                              5.296 KB      10 rows

Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX

Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT

Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS

Job "TUSER"."SYS_IMPORT_SCHEMA_03" completed with 2 error(s) at 22:18:28

注意：新插入的数据将丢失。

6.3 改表结构

SQL> alter table tab1 add (C varchar2(4));

Table altered

6.4 再导入数据

[oracle@cent4 ~]$ impdp tuser/tuser directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=truncate;

Import: Release 10.2.0.1.0 - 64bit Production on 星期五, 06 1月, 2012 22:22:02

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

Master table "TUSER"."SYS_IMPORT_SCHEMA_03" successfully loaded/unloaded

Starting "TUSER"."SYS_IMPORT_SCHEMA_03":  tuser/******** directory=dir_dump dumpfile=expdp.dmp schemas=tuser table_exists_action=truncate

Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA

Processing object type SCHEMA_EXPORT/TABLE/TABLE

ORA-39153: Table "TUSER"."TAB1" exists and has been truncated. Data will be loaded but all dependent metadata will be skipped due to table_exists_action of truncate

ORA-39153: Table "TUSER"."TAB2" exists and has been truncated. Data will be loaded but all dependent metadata will be skipped due to table_exists_action of truncate

Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA

ORA-39014: One or more workers have prematurely exited.

ORA-39029: worker 1 with process name "DW01" prematurely terminated

ORA-31671: Worker process DW01 had an unhandled exception.

ORA-00600: internal error code, arguments: [qerxtAgentOpen_911], [3], [2], [], [], [], [], []

ORA-06512: at "SYS.KUPW$WORKER", line 1345

ORA-06512: at line 2

Job "TUSER"."SYS_IMPORT_SCHEMA_03" stopped due to fatal error at 22:22:42

此时，一样也发生了600错误。看来导入导出前后的表结构不能发生变化。

ORACLE impdp 导入数据的更多相关文章

  1. Oracle impdp导入数据临时表空间与undo表空间爆满解决实例

    Oracle impdp导入数据临时表空间与undo表空间爆满解决实例 [日期:2018-01-24] 来源:Linux社区  作者:rangle [字体:大 中 小]   针对Oracle数据迁移, ...

  2. Oracle IMPDP导入数据案例之注意事项（undo/temp）

    针对Oracle数据迁移,我们可能会用到expdp/impdp的方式,有时候需要大表.lob字段等可能会消耗过大的临时表空间和undo表空间,所以一般我们根据导出日志,在导入前适当调整表空间大小.否则 ...

  3. Oracle逻辑导入数据（IMP/IMPDP）

    使用IMPDP导入数据的前提是数据是使用EMPDP导出的,同样也是在DOS窗口下直接输入IMPDP和登录数据库的用户名,即可导人数据. impdp导到指定用户下: impdp student/1234 ...

  4. Oracle使用——impdp导入数据时数据表已经存在

    背景 在做数据迁移时,需要将不同地方的dmp文件整合到一个数据库中,在导入时,目标表已经存在,该如何把数据追加进入目标表中 方法介绍 当使用IMPDP完成数据库导入时,如遇到表已存在时,Oracle提 ...

  5. oracle impdp导入时 提示“ORA-39002: 操作无效 ORA-39070: 无法打开日志文件 ”

    第一步:首先使用DBA权限的用户创建directory,我使用system ,可以在服务器本地创建,也可以远程连接sqlplus进行创建,使用的将是服务器上面的路径.要确保创建directory时,操 ...

  6. oracle impdp 导入

    用imp语法导入dmp文件: imp mdm/mdm@SYSWARE  file= ‪E:\Product\9y5s\5.MDM\20161024.DMP  full=y 报错 IMP-00002:无 ...

  7. Oracle Sqlload 导入数据

    sqlload导入数据具有快,简单,无需校验等方便,多说无益 1 首先,oracle数据库要有这么个表,用来接收数据.我这里这个uuid是序列生成的,当然也可以sqlload导入时候分配uuid -- ...

  8. Oracle快速导入数据工具

    sqlldr是oracle自带的快速导入批量数据的工具,常用于性能测试.考虑手工构造控制文件较为繁琐,因此使用脚本完成批量数据的自动导入. 基本知识 sqlldr命令语法 sqlldr dbname/ ...

  9. Oracle导出导入数据

    Oracle数据导入导出imp/exp就相当与oracle数据还原与备份, 利用这个功能你可以构建俩个相同的数据库,一个用来测试,一个用来正式使用. 可以在SQLPLUS.EXE或者DOS(命令行)中 ...

随机推荐

  1. Linux网络编程5——使用UDP协议实现群聊

    引言 本文实现的功能类似于我之前所写的一篇博文(Linux之select系统调用_2),区别在于进程之间的通信方式有所不同.之前的文章中,我所使用的是管道,而本文我将会使用socket接口. 需求 客 ...

  2. hdu 4462(状态压缩)

    题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4462 思路:由于数据不大,可以直接将所有的状态表示出来,然后枚举,判断能否将方格全部覆盖. http: ...

  3. 读取excel文件内容代码

    最近工作需要批量添加映射excel文件字段的代码  于是通过读取excel2007实现了批量生成代码,记录下代码 需要引入poi的jar包 import java.awt.List; import j ...

  4. Eclipse下Python的MySQLdb的安装以及相关问题

    前提是要安装好Python以及eclipse和MySQL的相应版本.本文Python为2.7,MySQL为5.1Eclipse为3.6.2 下载完MySQLdb以后,直接安装即可.在eclipse中启 ...

  5. java volatile 和Transient 关键字

    java关键字volatile volatile修饰的成员变量在每次被线程访问时,都强迫从主内存中重读该成员变量的值.而且,当成员变量发生变化时,强迫线程将变化值回写到主内存.这样在任何时刻,两个不同 ...

  6. 李洪强iOS开发之计算数组的最大最小值

    // //  ViewController.m //  A21 - 李洪强 - 输出参数 // //  Created by vic fan on 16/7/3. //  Copyright © 20 ...

  7. java、el表达式中保留小数的方法

    Java中: import java.math.BigDecimal; import java.text.DecimalFormat; import java.text.NumberFormat; p ...

  8. iOS开发--单例模式

    单例模式在iOS开发中可能算是最常用的模式之一了,但是由于oc本身的语言特性,想要写一个正确的单例模式相对来说比较麻烦,这里我就抛砖引玉来聊一聊iOS中单例模式的设计思路.关于单例模式更多的介绍请参考 ...

  9. RxJava+Retrofit+MVP构建的App——聚合资讯

    RtfRxMVP 聚合资讯APP,提供热点资讯,天气预报以及笑话精选服务,使用 Retrofit + RxJava + MVP 构建代码. Hello U 这是我的一个练习项目,第一次尝试运用 MVP ...

  10. [软件]XAMPP错误解决

    // 错误1  (在运行安装包时候出现) // 错误2 1. 找到这个文件 这个文件  要将 config.inc.php 中 $cfg['Servers'][$i]['host'] = ’local ...