CTXSYS CTXSYS The Oracle Text account Oracle Text Reference
DBSNMP 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
MDDATA MDDATA The schema used by Oracle Spatial for storing Geocoder and router data Oracle Spatial User's Guide and Reference
MDSYS MDSYS The Oracle Spatial and Oracle interMedia Locator administrator account Oracle Spatial User's Guide and Reference
DMSYS 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 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
OUTLN 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 SI_INFORMTN_SCHEMA The account that stores the information views for the SQL/MM Still Image Standard Oracle interMedia User's Guide
SYS CHANGE_ON_INSTALL The account used to perform database administration tasks Oracle Database Administrator's Guide
SYSMAN CHANGE_ON_INSTALL 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 MANAGER Another account used to perform database administration tasks. Oracle Database Administrator's Guide
这时候要找到一组用户名、密码提示被锁，才能进行下一步
安装ORACLE时，若没有为下列用户重设密码，则其默认密码如下：
用户名/密码
登录身份
说明
sys/change_on_install
SYSDBA或SYSOPER
不能以NORMAL登录，可作为默认的系统管理员
system/manager
SYSDBA或NORMAL
不能以SYSOPER登录，可作为默认的系统管理员
sysman/oem_temp
sysman 为oms的用户名
scott/tiger
NORMAL
普通用户
aqadm /aqadm
SYSDBA或NORMAL
高级队列管理员
Dbsnmp/dbsnmp
SYSDBA或NORMAL
复制管理员
2，在CMD中启动SQLPLUS；用sqlplus/as sysdba登录，提示
连接到:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
3. 执行ALTER USER 你被锁的用户名 ACCOUNT UNLOCK；
4. 重新用SQL/PLUS登录，用你刚刚解锁的用户名、密码；
重新修改密码就可以了！
具体操作如下： 1.运行->sqlplus /nolog 2.输入conn / as sysdba 管理员账户登录 3.如果用户被锁定先解锁： alter user system account unlock; 4.修改密码： alter user system identified by wanglj; 接下来可以用sqlplus登陆了。
