Oracle如何备份还原

这篇文章主要介绍Oracle如何备份还原，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

创建表分区

create tablespace apps datafile '&1\apps.dbf' size 10m autoextend on next 8m;create tablespace appsys datafile '&1\appsys.dbf' size 10m autoextend on next 8m;

创建分区表空间

create tablespace APPS_00 datafile '&1\APPS_00.dbf' size 10M autoextend on next 8M;create tablespace APPSYS_00 datafile '&1\APPSYS_00.dbf' size 10M autoextend on next 8M;

删除用户

drop user apps cascade;drop user appsys cascade;

创建用户

create user apps identified by cape default tablespace apps;create user appsys identified by cape default tablespace appsys;

授权

grant dba to apps with admin option;grant dba to appsys;grant create any table to apps;grant alter any table to apps;grant drop any table to apps;grant create any index to apps;grant drop any index to apps;

创建目录

create or replace directory expdp_wms_dir as 'D:\data_bak\';grant read, write on directory expdp_wms_dir to APPS;

EXP/IMP备份与还原

exp user/pwd@SID   file=d:\db_20101010.dmp log=d:\db_20101010.log  owner=(apps,appsys)imp user/pwd@SID  file=D:\db_20101010.dmp  log=D:\db_20101010.log fromuser=apps touser=apps fromuser=appsys touser=appsys ignore=y

EXPDP/IMPDP备份还原

expdp user/pwd@SID dumpfile=DB20141216.dmp logfile=DB20141216.log schemas=(apps,appsys) directory=expdp_dir job_name=expdp_job version=11.1.0.2impdp user/pwd@SID dumpfile=DB20141216.DMP logfile=DB20141216.log schemas=(apps,appsys) directory=impdp_dir job_name=impdp_job

表空间映射

impdp user/pwd@SID dumpfile=DB20141216.DMP logfile=DB20141216.log remap_schema=QA_SOA:SNPW remap_tablespace=DEV_ODI_USER:JJE_ODI_USER directory=impdp_dir job_name=impdp_job

• 忘记ORACLE的管理员sys用户密码
  在服务器本地登录，无须密码

    sqlplus / as sysdba

• 
  

• 登陆之后更改密码

    sql> alter user sys identified by sys;

• user test lacks CREATE SESSION privilege; logon denied.

• 使用DBA登陆，执行下面的授权语句。

• grant connect,resource to test;

• grant create session to test;

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