oracle基本操作备忘
1. 查询数据库现在的表空间
select tablespace_name, file_name, sum(bytes)/1024/1024 table_size from dba_data_files group by tablespace_name,file_name;
2. 建立表空间
CREATE TABLESPACE data01 DATAFILE '/oracle/oradata/db/DATA01.dbf' SIZE 500M;
3.删除表空间
DROP TABLESPACE data01 INCLUDING CONTENTS AND DATAFILES;
4. 修改表空间大小
alter database datafile '/path/NADDate05.dbf' resize 100M
5.增加数据文件
ALTER TABLESPACE NEWCCS ADD DATAFILE '/u03/oradata/newccs/newccs04.dbf' SIZE 4896M;
6. 删除数据文件
alter database datafile '/path/NADDate05.dbf' OFFLINE DROP;
7.建表并赋权限
create user username identified by username ;
grant resource ,connect,dba to username ;
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一
.
用户管理
1.1
建立用户（数据库验证）
CREATE
USER
DAVE
IDENTIFIED
BY
pwd
DEFAULT
TABLESPACE
users
TEMPORARY
TABLESPACE ......
1.创建测试表
create table users(
userid int primary key,
username varchar2(20),
userpwd varchar2(20)
);
insert into users values(1,'test','test');
insert into users values(2,'test','test');
insert into users values(3,'test','test');
insert into users values(4,'test','test');
insert i ......
select owner,sum(bytes)/1024/1024 sum_MB
from dba_segments
where tablespace_name='USERS' and owner like 'ZJ%'
group by owner
order by 2 desc;
SET NEWPAGE NONE HEADING OFF SPACE 0 PAGESIZE 0 TRIMOUT ON TRIMSPOOL ON LINESIZE 25 ......
--定义数据库连接分发器
alter system set dispatchers='(PROTOCOL=TCP)(SERVICE=imapdb)(DISPATCHERS=5)(PROTOCOL=IPC)(DISPATCHERS=5)' scope=spfile;
--定义共享服务数
alter system set shared_servers=20 scope=spfile;
--定义共享服务的session数
alter system set shared_server_sessions=1024 scope=spfile;
......
