1.安裝時選擇的自動安裝，忘了用戶名和密碼導(dǎo)致現(xiàn)在試了幾個Oracle默認用戶名密碼後（表格中附帶默認用戶名及密碼），都提示無效的用戶名、密碼，

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.
Oracle Database Administrator's Guide

這時候要找到一組用戶名、密碼提示被鎖，才能進行下一步

安裝ORACLE時，若沒有為下列用戶重設(shè)密碼，則其默認密碼如下：

用戶名/密碼

登錄身份

說明


sys/change_on_install

SYSDBA或SYSOPER

不能以NORMAL登錄，可作為默認的系統(tǒng)管理員

system/manager

SYSDBA或NORMAL

不能以SYSOPER登錄，可作為默認的系統(tǒng)管理員

sysman/oem_temp

sysman 為oms的用戶名

scott/tiger

NORMAL

普通用戶

aqadm /aqadm

SYSDBA或NORMAL

高級隊列管理員

Dbsnmp/dbsnmp

SYSDBA或NORMAL

復(fù)制管理員

2，在CMD中啟動SQLPLUS；用sqlplus/as sysdba登錄，提示

連接到:

Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production

3. 執(zhí)行ALTER USER 你被鎖的用戶名 ACCOUNT UNLOCK；

4. 重新用SQL/PLUS登錄，用你剛剛解鎖的用戶名、密碼；

重新修改密碼就可以了！

具體操作如下：
1.運行->sqlplus /nolog
2.輸入conn / as sysdba 管理員賬戶登錄
3.如果用戶被鎖定先解鎖：
alter user system account unlock;
4.修改密碼：
alter user system identified by wanglj;
接下來可以用sqlplus登陸了。

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