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HomeDatabaseMysql TutorialOracle expdp impdp dump参数介绍

Oracle expdp impdp dump参数介绍,1、CONTENT:该选项用于指定要导出的内容.默认值为ALLCONTENT={ALL | DATA_ONLY | METADATA_O

一、创建逻辑目录,该命令不会在操作系统创建真正的目录,最好以system等管理员创建。

        create directory dpdata as '/opt';

二、查看管理理员目录(同时查看操作系统是否存在,因为Oracle并不关心该目录是否存在,如果不存在,则出错)

        select * from dba_directories;

三、给scott用户赋予在指定目录的操作权限,最好以system等管理员赋予。

        grant read,write on directory dpdata1 to scott;

四、导出数据

1)按用户导

        expdp scott/tiger@orcl schemas=scott dumpfile=expdp.dmp DIRECTORY=dpdata1;

2)并行进程parallel

        expdp scott/tiger@orcl directory=dpdata1 dumpfile=scott3.dmp parallel=40 job_name=scott3

3)按表名导

        expdp scott/tiger@orcl TABLES=emp,dept dumpfile=expdp.dmp DIRECTORY=dpdata1;

4)按查询条件导

        expdp scott/tiger@orcl directory=dpdata1 dumpfile=expdp.dmp Tables=emp query='WHERE deptno=20';

5)按表空间导

        expdp system/manager DIRECTORY=dpdata1 DUMPFILE=tablespace.dmp TABLESPACES=temp,example;

6)导整个数据库

        expdp system/manager DIRECTORY=dpdata1 DUMPFILE=full.dmp FULL=y;

 

五、还原数据

1)导到指定用户下

        impdp scott/tiger DIRECTORY=dpdata1 DUMPFILE=expdp.dmp SCHEMAS=scott;

2)改变表的owner

        impdp system/manager DIRECTORY=dpdata1 DUMPFILE=expdp.dmp TABLES=scott.dept REMAP_SCHEMA=scott:system;

3)导入表空间

        impdp system/manager DIRECTORY=dpdata1 DUMPFILE=tablespace.dmp TABLESPACES=example;

4)导入数据库

        impdb system/manager DIRECTORY=dump_dir DUMPFILE=full.dmp FULL=y;

5)追加数据

        impdp system/manager DIRECTORY=dpdata1 DUMPFILE=expdp.dmp SCHEMAS=system TABLE_EXISTS_ACTION

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