expdp/impdp数据泵方式备份还原数据库

1、用sysdba账号登入数据库,然后查询到要更改的用户信息:

   SELECT user#,name FROM user$ where user#=110;

2、更改用户名并提交:

	 UPDATE USER$ SET NAME='C##DALIAN' WHERE user#=110;
     COMMIT;

3、强制刷新:

     ALTER SYSTEM CHECKPOINT;
     ALTER SYSTEM FLUSH SHARED_POOL;

4、更新用户的密码:

	 ALTER USER c##yk_dalian_test IDENTIFIED BY Letmein_12#$;
	 

# 查询需要修改的用户
SELECT user#,name FROM user$ where user#=110;

# 创建备份路径,expdp/impdp必须要有这个地址
create directory dumpdir as '/home/oracle'

# 导出数据库
expdp 'C##DALIAN/Letmein' directory=DUMPDIR schemas=C##DALIAN dumpfile=2021_shujuku.dmp logfile=shujuku.log

# 删除表空间
drop user c##yk_dalian_test cascade;

# 创建表空间
create tablespace c##yk_dalian_test datafile '/orc/app/oracle/oradata/orcl/c##yk_dalian_test.dbf' size 500M autoextend on next 5M maxsize unlimited;

# 创建用户并指定表空间
create user c##yk_dalian_test identified by Letmein_12#$ default tablespace c##yk_dalian_test temporary tablespace temp profile default;

# 用户授权
grant connect,resource,dba to c##yk_dalian_test;

# 还原数据库。 remap_schema修改用户名, remap_tablespace修改表空间
impdp c##yk_dalian_test/Letmein_12#$ DIRECTORY=DUMPDIR dumpfile=2021_shujuku.dmp remap_schema=C##DALIAN:c##yk_dalian_test remap_tablespace=C##DALIAN:c##yk_dalian_test

# 查询指定用户表空间
select default_tablespace from dba_users where username='c##yk_dalian_test';

  

1、用sysdba账号登入数据库,然后查询到要更改的用户信息:

  SELECT user#,name FROM user$ where user#=110;

2、更改用户名并提交:

UPDATE USER$ SET NAME='C##DALIAN' WHERE user#=110;
COMMIT;

3、强制刷新:

ALTER SYSTEM CHECKPOINT;
ALTER SYSTEM FLUSH SHARED_POOL;

4、更新用户的密码:

ALTER USER c##yk_dalian_test IDENTIFIED BY Letmein_12#$;

# 查询需要修改的用户
SELECT user#,name FROM user$ where user#=110;

# 创建备份路径,expdp/impdp必须要有这个地址
create directory dumpdir as '/home/oracle'

# 导出数据库
expdp 'C##DALIAN/Letmein' directory=DUMPDIR schemas=C##DALIAN dumpfile=2021_shujuku.dmp logfile=shujuku.log

# 删除表空间
drop user c##yk_dalian_test cascade;

# 创建表空间
create tablespace c##yk_dalian_test datafile '/orc/app/oracle/oradata/orcl/c##yk_dalian_test.dbf' size 500M autoextend on next 5M maxsize unlimited;

# 创建用户并指定表空间
create user c##yk_dalian_test identified by Letmein_12#$ default tablespace c##yk_dalian_test temporary tablespace temp profile default;

# 用户授权
grant connect,resource,dba to c##yk_dalian_test;

# 还原数据库。 remap_schema修改用户名, remap_tablespace修改表空间
impdp c##yk_dalian_test/Letmein_12#$ DIRECTORY=DUMPDIR dumpfile=2021_shujuku.dmp remap_schema=C##DALIAN:c##yk_dalian_test remap_tablespace=C##DALIAN:c##yk_dalian_test

# 查询指定用户表空间
select default_tablespace from dba_users where username='c##yk_dalian_test';

posted @ 2021-05-14 00:18  看见酵母菌  阅读(245)  评论(0编辑  收藏  举报