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1.用Xshell遠程連接安裝數據庫的服務器,切換到安裝oracle數據庫的用戶下,(我的oracle數據庫就安裝在oracle用戶下)

命令: su - oracle;

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2.進入oracle控制臺
命令: sqlplus /nolog;
以dba角色進入
命令: conn /as sysdba;

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3.連接成功后,查看用戶列表
命令: select username from dba_user;

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4.若修改某一個用戶密碼,修改用戶口令格式為: alter user username identified by newpassword;
例如修改用戶demo的密碼:
命令: alter user demo identified by demo123;

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5.修改成功

以下為修改詳細過程:

Xshell for Xmanager Enterprise 4 (Build 0182) Copyright (c) 2002-2011 NetSarang Computer, Inc. All rights reserved.Type `help' to learn how to use Xshell prompt. Xshell:\> Connecting to 192.168.1.24:22... Connection established. Escape character is '^@]'.Last login: Sun Oct 9 09:09:31 2016 from 172.16.5.212 [root@kdyd01 ~]# SU - oracle -bash: SU: command not found [root@kdyd01 ~]# su - oracle [oracle@kdyd01 ~]$ sqlplus /nologSQL*Plus: Release 11.2.0.4.0 Production on Thu Oct 20 13:45:13 2016Copyright (c) 1982, 2013, Oracle. All rights reserved.SQL> conn /as sysdba Connected. SQL> select username from dba_users;USERNAME ------------------------------ DSG TMR PLATFORM SDQN SYS SYSTEM BJUSER FLOWS_FILES MDSYS ORDSYS EXFSYSUSERNAME ------------------------------ DBSNMP SCOTT WMSYS ORACLE_OCM APPQOSSYS XS$NULL APEX_030200 OWBSYS_AUDIT MDDATA ORDDATA CTXSYSUSERNAME ------------------------------ ANONYMOUS OUTLN DIP APEX_PUBLIC_USER SYSMAN XDB SPATIAL_CSW_ADMIN_USR SPATIAL_WFS_ADMIN_USR ORDPLUGINS OWBSYS MGMT_VIEWUSERNAME ------------------------------ SI_INFORMTN_SCHEMA OLAPSYS35 rows selected.SQL> alter user bjuser identified by BJUser;User altered.SQL> exit; Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options [oracle@kdyd01 ~]$ sqlplus bjuser/BJUserSQL*Plus: Release 11.2.0.4.0 Production on Thu Oct 20 14:02:44 2016Copyright (c) 1982, 2013, Oracle. All rights reserved.Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing optionsSQL>

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