Question

Oracle默认安装中DE 默认用户是用来做什么的

Oracle默认安装中DE 默认用户是用来做什么的？在Oracle中起什么作用？
默认用户：BI、PM、SH、IX、OE、HR、SCOTT、MGMT_VIEW、MDDATA、SYSMAN、MDSYS、SI_INFORMTN_SCHEMA、ORDPLUGINS、OLAPSYS、ANONYMOU
XDB
CTXSYS
EXFSYS
WMSYS
DBSNMP
TSMSYS

USERNAME
--------
DMSYS
DIP
OUTLN
SYSTEM
SYS

Answer 1

一部分是 Oracle 给的一个数据库的蓝本给你学习用的，像HR ,SCOTT
另外的是系统相关的账号像 sysdba sysman

Answer 2

CTXSYS: The Oracle Text account,Oracle Text Reference
DBSNMP: The account used by the Management Agent component of Oracle ,Enterprise Manager to monitor and manage the database Oracle Enterprise Manager Grid Control Installation and Basic Configuration
LBACSYS: The Oracle Label Security administrator account, Oracle Label Security Administrator's Guide
MDDATA: The schema used by Oracle Spatial for storing Geocoder and router data, Oracle Spatial User's Guide and Reference
MDSYS: The Oracle Spatial and Oracle interMedia Locator administrator account, Oracle Spatial User's Guide and Reference
DMSYS: The Oracle Data Mining account. Oracle Data Mining Administrator's Guide,Oracle Data Mining Concepts
OLAPSYS MANAGER The account used to create OLAP metadata structures. It owns the OLAP Catalog (CWMLite). Oracle OLAP Application Developer's Guide

ORDPLUGINS: The Oracle interMedia user. Plug-ins supplied by Oracle and third party format plug-ins are installed in this schema, Oracle interMedia User's Guide
ORDSYS: The Oracle interMedia administrator account Oracle interMedia User's Guide
OUTLN: The account that supports plan stability. Plan stability enables you to maintain the same execution plans for the same SQL statements. OUTLN acts as a role to centrally manage metadata associated with stored outlines. Oracle Database Performance Tuning Guide
SI_INFORMTN_SCHEMA : The account that stores the information views for the SQL/MM Still Image Standard, Oracle interMedia User's Guide
SYS: The account used to perform database administration tasks, Oracle Database Administrator's Guide
SYSMAN: The account used to perform Oracle Enterprise Manager database administration tasks. Note that SYS and SYSTEM can also perform these tasks. Oracle Enterprise Manager Grid Control Installation and Basic Configuration
SYSTEM: Another account used to perform database administration tasks.