Oracle 修改Database Link密码

2024-07-14 13:20| 来源: 网络整理| 查看: 265

生产库上要修改生产用户的密码，密码修改完后就涉及到修改dblink的密码。

11gR2版本之前只能删除dblink后重建，11gR2版本后可以直接修改。

修改dblink的密码有两种方法：

1、删除dblink后重建

2、直接修改dblink的用户密码

下面测试两种方法：

测试库版本：11.2.0.4.0

创建两个dblink，一个PUBLIC另一个PRIVATE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 create PUBLIC database link link_101 connect to SYSTEM identified by "123456" using '(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.11)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = mydb) ) )' ; create database link link_102 connect to SYSTEM identified by "123456" using '(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.11)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = mydb) ) )' ; sys@ORCL> select * from dual@link_101; DUM --- X sys@ORCL> select * from dual@link_102; DUM --- X

修改远端数据库密码

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 SQL> alter user system identified by "654321" ; User altered. sys@ORCL> select * from dual@link_101; select * from dual@link_101 * ERROR at line 1: ORA-01017: invalid username/ password ; logon denied ORA-02063: preceding line from LINK_101 sys@ORCL> select * from dual@link_102; select * from dual@link_102 * ERROR at line 1: ORA-01017: invalid username/ password ; logon denied ORA-02063: preceding line from LINK_102

方法一：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 sys@ORCL> drop public database link link_101; Database link dropped. sys@ORCL> drop database link link_102; Database link dropped. create PUBLIC database link link_101 connect to SYSTEM identified by "654321" using '(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.11)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = mydb) ) )' ; create database link link_102 connect to SYSTEM identified by "654321" using '(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.11)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = mydb) ) )' ; sys@ORCL> select * from dual@link_101; DUM --- X sys@ORCL> select * from dual@link_102; DUM --- X

方法二：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 sys@ORCL> select * from dual@link_101; select * from dual@link_101 * ERROR at line 1: ORA-01017: invalid username/ password ; logon denied ORA-02063: preceding line from LINK_101 sys@ORCL> select * from dual@link_102; select * from dual@link_102 * ERROR at line 1: ORA-01017: invalid username/ password ; logon denied ORA-02063: preceding line from LINK_102 sys@ORCL> alter public database link link_101 connect to system identified by "654321" ; Database link altered. sys@ORCL> alter database link link_102 connect to system identified by "654321" ; Database link altered. sys@ORCL> select * from dual@link_101; DUM --- X sys@ORCL> select * from dual@link_102; DUM --- X

方法二如果提示ORA-01031: insufficient privileges，则赋权grant alter database link to zx;

本文转自hbxztc 51CTO博客，原文链接：http://blog.51cto.com/hbxztc/1875366，如需转载请自行联系原作者

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