在plsql developer中要是以scott/tiger登录时提示ora-28000 the account is locked。
解决办法：
新装完Oracle10g后，用scott/tiger测试，会出现以下错误提示： oracle10g the account is locked oracle10g the password has expired 原因：默认Oracle10g的scott不能登陆。 解决： （1）conn sys/sys as sysdba; //以DBA的身份登录 （2）alter user scott account unlock;// 然后解锁 （3）conn scott/tiger //弹出一个修改密码的对话框，修改一下密码就可以了
在运行里面输入cmd在DOS模式下输入sqlplus，以system用户名登录，密码是刚装oracle时自己填写的密码orcl，登录进去以 后。
SQL> conn sys/sys as sysdba; （分号是必须的但是我是以system登录的所在这不应该写 conn sys/sys as sysdba应该写conn system/orcl as sysdba;） Connected. SQL> alter user scott account unlock; User altered. SQL> commit; Commit complete. SQL> conn scott/tiger//请输入新密码，并确认后OK Password changed Connected.
这时再到plsql developer里面以scott/tiger登录就可以了。。。。。
Oracle 10g 默认安装带来的用户名/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
转载于:https://www.cnblogs.com/Gaojier/archive/2010/04/08/2783540.html
相关资源：oracle11g用户登录时被锁定问题的解决方法 （ora-28000 the account is locked）