一.数据库语言分类 二.DML之数据插入 把一个表中的数据查询出来插入另外一个表中. create table student(id number,name varchar2(20),age number); insert into student select id,name,age from student1; insert into student select * from student as of timestamp(sysdate-5/1440); sysdat…
查询ASM实例包含的内存组件 SQL> select component,current_size from v$memory_dynamic_components 2 ; COMPONENT CURRENT_SIZE ---------------------------------------------------------------- ------------ shared pool 624951296 large pool 12582912 java pool 0 streams…
1.给用户解锁 alter user scott account unlock; 2.注销.断开.切换当前用户连接 quit conn scott/tiger 3.用户权限查询 A .查看所有用户: select * from dba_users; select * from all_users; select * from user_users; B.查看用户或角色系统权限(直接赋值给用户或角色的系统权限): select * from dba_sys_privs; select * from…
