oracle启动关闭
http://www.cnblogs.com/CandiceW/p/6117408.html
oracle开机自启动
http://www.cnblogs.com/mophee/archive/2013/06/03/3115805.html
Oracle服务启动
#su oracle --password:oracle
#sqlplus /nolog
#connect / as sysdba
#startup
Oracle服务停止
#shutdown
监听
启动监听
#lsnrctl start
停止监听
#lsnrctl stop
查看监听状态
#lsnrctl status
用户管理
创建用户
create user "username" identified by "userpassword" ;
删除用户
drop user “username” cascade;
注：cascade 参数是级联删除该用户所有对象，经常遇到如用户有对象而未加此参数则用户删不了的问题，所以习惯性的加此参数
授权
grant connect,resource,dba to "username" ;
查看当前用户的角色
select * from user_role_privs;
select * from session_privs;
查看当前用户的系统权限和表级权限
select * from user_sys_privs;
select * from user_tab_privs;
查询用户表
select username from dba_users;
修改用户口令
alter user "username" identified by "password";
显示当前用户
show user;
查看用户当前连接数
select count(*) from sys.v_$session；
表及表空间
--创建临时表空间
create temporary tablespace mydb_temp tempfile '/opt/app/oracle/oradata/orcl/mydb/_temp01.dbf' size 32m autoextend on next 32m maxsize 2048m extent management local;
--创建数据表空间
create tablespace mydb logging datafile '/opt/app/oracle/oradata/orcl/mydb/mydb_data01.dbf' size 32m autoextend on next 32m maxsize 2048m extent management local;
--创建用户并指定表空间
create user myuser identified by 123456 default tablespace mydb temporary tablespace mydb_temp;
删除表空间
DROP TABLESPACE data01 INCLUDING CONTENTS AND DATAFILES;
修改表空间大小
alter database datafile '/path/NADDate05.dbf' resize 100M;
查询数据库文件
select * from dba_data_files;
查询当前存在的表空间
select * from v$tablespace;
表空间情况
select tablespace_name,sum(bytes)/1024/1024 from dba_data_files group by tablespace_name;
查询表空间剩余空间
select tablespace_name,sum(bytes)/1024/1024 from dba_free_space group by tablespace_name;
查看表结构
desc table