1、查询用户的权限 Select * From sys.dba_sys_privs a Where A.grantee= 'username';
2、在当前用户下查询当前用户的权限 SELECT * FROM session_privs;
3、给用户赋权限 Grant select on tablename to username;
4、删除用户的权限 Revoke create table ,select any table ,update any table ,insert any table ,delete any table ,sysdab From user_name;