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
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，可作為默認的系統管理員
system/manager
SYSDBA或NORMAL
不能以SYSOPER登錄，可作為默認的系統管理員
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。
