解决Oracle 10g忘记system,sys密码的方法

Microsoft Windows XP [版本 5.1.2600]

　　C:\Documents and Settings\Administrator>sqlplus /nolog

　　SQL*Plus: Release 10.1.0.2.0 - Production on 星期六 6月 26 11:08:34 2010

　　SQL> conn /as sysdba

　　Connected.

　　SQL> alter user system identified by "123456";

　　User altered.

　　SQL> alter user sys identified by "123456";

　　User altered.

　　SQL> alter user system identified by "123456";

　　User altered.

　　SQL> exit

　　Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Pr

　　oduction

　　With the Partitioning, OLAP and Data Mining options

　　C:\Documents and Settings\Administrator>sqlplus

　　SQL*Plus: Release 10.1.0.2.0 - Production on 星期六 6月 26 11:11:34 2010

　　Enter user-name: system

　　Enter password:

　　Connected to:

　　Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production

　　With the Partitioning, OLAP and Data Mining options

　　SQL> select instance_name from v$instance;

　　INSTANCE_NAME

　　--------------------------------

　　myfirstoracledb

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