Oracle数据库学习小结(一)
今天要跟大家来聊一聊俺在使用Oracle数据库的这段时间里面学到的一些知识。 俺最近出来工作了,来到的公司是使用的Oracle数据库,之前一直使用的是SQL的数据库,在性质上二者前者是收费的,后者是开源的;在使用上主要还是靠自己探索,下面说说俺的一些收获
今天要跟大家来聊一聊俺在使用Oracle数据库的这段时间里面学到的一些知识。俺最近出来工作了,来到的公司是使用的Oracle数据库,之前一直使用的是SQL的数据库,在性质上二者前者是收费的,后者是开源的;在使用上主要还是靠自己探索,下面说说俺的一些收获。在前段时间俺一直在鼓捣组长分下来的一个任务,定时同步数据的一个小程序,俺的Oracle之旅也是从这里才算是正式开始的。
近期的学习中俺了解到Oracle数据库本身是自带三个默认用户的:sys(网络管理员)、system(本地普通管理员)、scott(本地普通用户)。目前俺只是了解了system这个用户,了解的也只是权限上的一些皮毛,其它两个还没有认知。我们在使用Oracle数据库时会创建不同的用户来对应不同的系统或者程序,不同的用户下面有自己对应的表和数据。下面这个就是创建用户的前一部分语句:
-- Create the user create user JCSYN <span style="white-space:pre"> </span>----创建JCSYN这个角色 identified by password<span style="white-space:pre"> </span>----给这个角色设置密码 default tablespace PMS<span style="white-space:pre"> </span>----默认的表空间 temporary tablespace TEMP<span style="white-space:pre"> </span>----临时的表空间 profile DEFAULT<span style="white-space:pre"> </span>----配置文件默认 quota unlimited on pms<span style="white-space:pre"> </span>----配置非限额在PMS这个表空间 quota unlimited on pms_lob;<span style="white-space:pre"> </span>----配置非限额在PMS_LOB这个表空间
赋予权限的语句:grant 权限 to 用户;
移除权限的语句:revoke 权限 from 用户;
如果我们不清楚角色都有什么权限,我们可以使用下面的语句来查找数据库中的所有角色权限信息:
select * from user_sys_privs ;
下面我将使用过的创建角色语句给大家看一下,仅供参考!
-- Create the user create user JCSYN identified by password default tablespace PMS temporary tablespace TEMP profile DEFAULT quota unlimited on pms quota unlimited on pms_lob; -- Grant/Revoke object privileges grant select, insert, update, delete on HORIZON.TOR_HORIZON_USER_DEPT to JCSYN; grant select, insert, update, delete on HORIZON.TO_HORIZON_DEPT to JCSYN; grant select, insert, update, delete on HORIZON.TO_HORIZON_USER to JCSYN; grant select, insert, update, delete on HORIZON.TPR_HORIZON_OBJ_ROLE to JCSYN; -- Grant/Revoke role privileges grant connect to JCSYN; grant scheduler_admin to JCSYN; -- Grant/Revoke system privileges grant alter any procedure to JCSYN; grant create any synonym to JCSYN; grant create database link to JCSYN; grant create job to JCSYN; grant create materialized view to JCSYN; grant create procedure to JCSYN; grant create public database link to JCSYN; grant create sequence to JCSYN; grant create synonym to JCSYN; grant create table to JCSYN; grant create trigger to JCSYN; grant create type to JCSYN; grant create view to JCSYN; grant debug any procedure to JCSYN; grant debug connect session to JCSYN; grant delete any table to JCSYN; grant drop public database link to JCSYN; grant execute any class to JCSYN; grant execute any library to JCSYN; grant execute any procedure to JCSYN with admin option; grant execute any program to JCSYN with admin option; grant execute any type to JCSYN; grant manage scheduler to JCSYN; grant select any dictionary to JCSYN; grant select any table to JCSYN;

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