装的时候不是就要你输入用户名和密码的么？在默认情况下，假如你登录OS的用户是DBA组的，可以这样：sqlplus /nolog sql>connect / as sysdba这样就以SYSDBA权限连上了，然后可以改其它任何用户的密码
Oracle 用户及角色 介绍 http://blog.csdn.net/tianlesoftware/archive/2009/11/09/4786956.aspx下面是Oracle的用户名和密码，及对用户的描述： UsernamePasswordDescriptionSee Also CTXSYSCTXSYSThe Oracle Text accountOracle Text Reference DBSNMPDBSNMPThe account used by the Management Agent component of Oracle Enterprise Manager to monitor and manage the databaseOracle Enterprise Manager Grid Control Installation and Basic Configuration LBACSYSLBACSYSThe Oracle Label Security administrator accountOracle Label Security Administrator's Guide MDDATAMDDATAThe schema used by Oracle Spatial for storing Geocoder and router dataOracle Spatial User's Guide and Reference MDSYSMDSYSThe Oracle Spatial and Oracle interMedia Locator administrator accountOracle Spatial User's Guide and Reference DMSYSDMSYSThe Oracle Data Mining account.Oracle Data Mining Administrator's Guide Oracle Data Mining Concepts OLAPSYSMANAGERThe account used to create OLAP metadata structures. It owns the OLAP Catalog (CWMLite).Oracle OLAP Application Developer's Guide ORDPLUGINSORDPLUGINSThe Oracle interMedia user. Plug-ins supplied by Oracle and third party format plug-ins are installed in this schema.Oracle interMedia User's Guide ORDSYSORDSYSThe Oracle interMedia administrator accountOracle interMedia User's Guide OUTLNOUTLNThe 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_SCHEMASI_INFORMTN_SCHEMAThe account that stores the information views for the SQL/MM Still Image StandardOracle interMedia User's Guide SYSCHANGE_ON_INSTALLThe account used to perform database administration tasksOracle Database Administrator's Guide SYSMANCHANGE_ON_INSTALLThe 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 SYSTEMMANAGERAnother account used to perform database administration tasks.Oracle Database Administrator's Guide------------------------------------------------------------------------------ Blog： http://blog.csdn.net/tianlesoftware 网上资源： http://tianlesoftware.download.csdn.net 相关视频：http://blog.csdn.net/tianlesoftware/archive/2009/11/27/4886500.aspx DBA1 群：62697716(满); DBA2 群：62697977
sql>connect / as sysdba这样就以SYSDBA权限连上了，然后可以改其它任何用户的密码
http://blog.csdn.net/tianlesoftware/archive/2009/11/09/4786956.aspx下面是Oracle的用户名和密码，及对用户的描述：
UsernamePasswordDescriptionSee Also CTXSYSCTXSYSThe Oracle Text accountOracle Text Reference DBSNMPDBSNMPThe account used by the Management Agent component of Oracle Enterprise Manager to monitor and manage the databaseOracle Enterprise Manager Grid Control Installation and Basic Configuration LBACSYSLBACSYSThe Oracle Label Security administrator accountOracle Label Security Administrator's Guide MDDATAMDDATAThe schema used by Oracle Spatial for storing Geocoder and router dataOracle Spatial User's Guide and Reference MDSYSMDSYSThe Oracle Spatial and Oracle interMedia Locator administrator accountOracle Spatial User's Guide and Reference DMSYSDMSYSThe Oracle Data Mining account.Oracle Data Mining Administrator's Guide Oracle Data Mining Concepts OLAPSYSMANAGERThe account used to create OLAP metadata structures. It owns the OLAP Catalog (CWMLite).Oracle OLAP Application Developer's Guide ORDPLUGINSORDPLUGINSThe Oracle interMedia user. Plug-ins supplied by Oracle and third party format plug-ins are installed in this schema.Oracle interMedia User's Guide ORDSYSORDSYSThe Oracle interMedia administrator accountOracle interMedia User's Guide OUTLNOUTLNThe 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_SCHEMASI_INFORMTN_SCHEMAThe account that stores the information views for the SQL/MM Still Image StandardOracle interMedia User's Guide SYSCHANGE_ON_INSTALLThe account used to perform database administration tasksOracle Database Administrator's Guide SYSMANCHANGE_ON_INSTALLThe 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 SYSTEMMANAGERAnother account used to perform database administration tasks.Oracle Database Administrator's Guide------------------------------------------------------------------------------
Blog： http://blog.csdn.net/tianlesoftware
网上资源： http://tianlesoftware.download.csdn.net
相关视频：http://blog.csdn.net/tianlesoftware/archive/2009/11/27/4886500.aspx
DBA1 群：62697716(满); DBA2 群：62697977