1、查看当前数据库实例名称：select * from v$instance;2、查看当前用户的角色：select * from user_role_privs;3、查看当前用户下所有的表：select * from user_tables;4、查看当前名称包含admin字符的表：select object_name,object_id from user_objects where instr(object_name,'admin')>0;