Oracle常用操作
Oracle常用的一些操作,记录下来:
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/[email protected]: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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