Oracle常用操作
1.建立表空间和用户的步骤：用户
建立：create user 用户名 identified by "密码";
授权：grant create session to 用户名;
grant create table to用户名;
grant create tablespace to用户名;
grant create view to用户名;
2.表空间
建立表空间(一般建N个存数据的表空间和一个索引空间)：
create tablespace 表空间名
datafile ' 路径(要先建好路径)\***.dbf' size *M
tempfile ' 路径\***.dbf ' size *M
autoextend on--自动增长
--还有一些定义大小的命令，看需要
default storage(
initial 100K,
next 100k,
);
例子：创建表空间
create tablespace DEMOSPACE
datafile 'E:/oracle_tablespaces/DEMOSPACE_TBSPACE.dbf'
size 1500M
autoextend on next 5M maxsize 3000M;
删除表空间
drop tablespace DEMOSPACE including contents and datafiles
3.用户权限
授予用户使用表空间的权限：
alter user 用户名 quota unlimited on 表空间;
或 alter user 用户名 quota *M on 表空间;
4.--表空间
CREATE TABLESPACE sdt
DATAFILE 'F:\tablespace\demo' size 800M
EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;
--索引表空间
CREATE TABLESPACE sdt_Index
DATAFILE 'F:\tablespace\demo' size 512M
EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;
--2.建用户
create user demo identified by demo
default tablespace demo;
--3.赋权
grant connect,resource to demo;
grant create any sequence to demo;
grant create any table to demo;
grant delete any table to demo;
grant insert any table to demo;
grant select any table to demo;
grant unlimited tablespace to demo;
grant execute any procedure to demo;
grant update any table to demo;
grant create any view to demo;
5.--导入导出命令
ip导出方式： exp demo/demo@127.0.0.1:1521/orcl file=f:/f.dmp full=y
exp demo/demo@orcl file=f:/f.dmp full=y
imp demo/demo@orcl file=f:/f.dmp full=y ignore=y
6.--创建数据链
create database link ygbgtest_portaltest_link
connect to portal identified by portal
using '(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.104.102)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orcl)
)
)';
select * from portal_information@ygbgtest_portaltest_link;
7.--创建临时表以获取远程表数据
Create global temporary table temp_ygbg_information on commit preserve rows
as select * from portal_information@ygbgtest_portaltest_link;
select count(1) from temp_ygbg_information t;
select * from temp_ygbg_information;
8.--从临时表中将数据插入到目的表中
insert into portal_information
(id,
title,
picture_url,
status,
author_id,
author_name,
create_time,
modify_date,
delete_date,
view_num,
order_flag,
summary,
type,
promulgation_charge,
information_source,
sort_num,
sub_title,
is_slidenews)
select
SEQ_PORTAL_INFORMATION.NEXTVAL,
title,
picture_url,
status,
author_id,
author_name,
create_time,
modify_date,
delete_date,
view_num,
order_flag,
summary,
type,
promulgation_charge,
information_source,
sort_num,
sub_title,
is_slidenews from temp_ygbg_information t1 where t1.id=3338;
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