标签：style blog color sp for div on log bs
1：以sysdba登陆系统，首先创建一个用户
SQL> conn /as sysdba Connected. 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/yshy Connected. 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 exist SQL>
4：登陆scott把emp表的查询权限授权给yshy用户。
SQL> conn scott/tiger Connected. 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
标签：style blog color sp for div on log bs
原文地址：http://www.cnblogs.com/yshyee/p/4088652.html
