oracle 10g默认用户名、密码解锁

1.           安装时选择的自动安装，由于时间久远忘记用户名、密码了，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），都提示无效的用户名、密码，终于在试了下dbsnmp/dbsnmp，提示被锁； 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 DBSNMP ACCOUNT UNLOCK； 4.           从新用SQL/PLUS登录，设置用户名、密码； 注：由于刚才解锁的用户名是DBSNMP，所以这里设置的用户名也是DBSNMP Oracle 10g 默认安装带来的用户名/密码（安装时的密码是所有以下用户的默认密码。）    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 修改密码方法： 1.SQL> grant connect to USRNAME identified by USRPWD ; 2.SQL> alter user USRNAME identified by USRPWD ; 3.SQL> password USRNAME ; 更改 USRNMAE 的口令 旧口令：×××××× 新口令：×××××× 重新键入新口令：×××××× 修改成oracle认证方法： 1.修改参数文件中  remote_login_passwordfile=EXCLUSIVE 或SHARED 2.修改/home/network/admin/SQLNET.ORA 文件 　　增加 sqlnet.authentication_services=(NFS) ORACLE_SID是操作系统级的参数 INSTANCE_NAME是数据库级的参数 SPFILE 是服务器参数文件 PFILE 是文本参数文件 create pfile='/oracle/test.ora' from spfile ; show parameter spfile ; 后如果VALUE值是零，则没有使用spfile。 启动数据库是可以指定是用pfile还是用spfile启动 如下： startup pfile='/oracle/test.ora'