oracle 10g 默认用户名密码及解锁
1. 安装时选择的自动安装，忘了用户名和密码，导致现在试了几个默认的用户名密码後（表格中附带默认用户名及密码），都提示给用户被锁，

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   默认用户名  ACCOUNT UNLOCK；（即给默认用户解锁）

4.  从新用SQL/PLUS登录，提示修改密码；（则用户被解锁)

oracle 10g默认用户名和密码

Username
Password
Description
See Also

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

LBACSYS
LBACSYS
The Oracle Label Security administrator account
Oracle Label Security Administrator’s Guide

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

ORDSYS
ORDSYS
The Oracle interMedia administrator account
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.

原连接：http://wiiln.iteye.com/blog/1393627