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Oracle 创建同义词

1:以sysdba登陆系统,首先创建一个用户

SQL> conn /as sysdbaConnected.SQL> create user yshy identified by yshy;User created.SQL> grant connect to yshy;Grant succeeded.SQL> grant resource to yshy;Grant succeeded.SQL> grant create synonym to yshy;Grant succeeded.SQL> 

2:切换到yshy用户,并创建同义词针对scott.emp

SQL> conn yshy/yshyConnected.SQL> create synonym y_emp for scott.emp;Synonym created.

3:查询同义词,提示表或视图不存在。

SQL> select * from y_emp;select * from y_emp              *ERROR at line 1:ORA-00942: table or view does not existSQL> 

4:登陆scott把emp表的查询权限授权给yshy用户。

SQL> conn scott/tigerConnected.SQL> grant select on emp to yshy;Grant succeeded.SQL> conn yshy/yshy;Connected.SQL> select * from y_emp;

【删除同义词】
DROP [PUBLIC] SYNONYM [schema.]sysnonym_name

 

Oracle 创建同义词