Import and export of oracle

-------------------------------------------------- Database import and export--------------------------------------------------------- ---------

Major premise: When encountering an unknown oracle data source, you need to know its original tablespace name and original user name. Of course, it is best to know its encoding method, aha~~~

Before performing import and export, give the user dba permission or as many permissions as possible to avoid successful export and import due to permission restrictions

*, oracle exports all information under a user --exp

exp caetest/caetest@strongdb file='d:\test.dmp' owner=('caetest') full=y;

*, oracle imports all information under a user (same name) --imp

imp caetest/caetest@orcl  file='d:\test.dmp' log='d:\caetest.log' full=y;

*, oracle imports all information under a user (different name) --imp

imp caetest/caetest@orcl fromuser=fromname touser=tonewname  file='d:\test.dmp' log='d:\caetest.log' full=y;

*, oracle exports all information under a user --expdp

1. Query an existing directory
select * from dba_directories;
2. Create or modify directory information (delete --drop directory expdpdir;)
create or replace directory expdpdir as 'd:\';
3. Give a user read and write permissions to a directory (to retrieve it with --revoke...from syntax)
grant read , write on directory expdpdir to caetest;
export operation
expdp caetest/caetest@strongdb schemas=caetest dumpfile='x.dmp' directory=expdpdir (note no semicolon)

*, oracle imports all information under a user (same name) --impdp

impdp caetest/caetest dumpfile='x.dmp' directory=expdpdir schemas=caetest (note no semicolon)

*, oracle imports all information under a user (different name) --impdp

impdp caetest/caetest dumpfile='x.dmp' directory=expdpdir remap_schema=oldname:newname; (note no semicolon)

*, oracle is imported into a database with different username and tablespace name --impdp

impdp username/key dumpfile=XXX.dmp directory=dtname remap_schema=oldname:newname
remap_tablespace=oldts:newts (note no semicolon)

*, oracle import and export remote database data

1. Building the foundation of communication
1.1. Modify the tnsnames.ora file of the server as follows:
The file is generally in: *product\11.2.0\dbhome_1\NETWORK\ADMIN directory
The instance name that will be referenced =   
(DESCRIPTION =   
    (ADDRESS_LIST =   
      (ADDRESS = (PROTOCOL = TCP)(HOST = Remote IP)(PORT = 1521))   
    )   
    (CONNECT_DATA =   
      (SERVICE_NAME=orcl-instancename)   
    )   
)
1.2、若是客户端，打开net manager
创建一个服务命名-将引用的实例名称，主机IP为：*，服务名orcl，端口1521
二、测试是否配置成功
cmd下，执行命令:tnsping 将引用的实例名称
成功便会返回关键字：OK
三、实例名称写成-将引用的实例名称，然后执行导入导出即可

备注：远程操作之后，所有的文件路径以及文件最终所在的位置以操作的服务器为准，既远程导出后，文件还是在远程服务器上的目录下的。切记，切记，切记。

执行导入导出后记得收回相应的权限

--------------------------------------------------资源列表--------------------------------------------------------------

oracle数据库导入导出exp/imp

http://www.cnblogs.com/fjfzhkb/archive/2007/09/03/879807.html

oracle数据库导入导出expdp/impdp

http://blog.csdn.net/indexman/article/details/7849401

oracle数据库导入导出expdp/impdp-的目录操作

http://www.2cto.com/database/201304/203333.html

oracle导入导出配置远程信息

http://blog.chinaunix.net/uid-20980141-id-447996.html

Import and export of oracle

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