Oracle修改密码

sqlplus /nolog;

connect / as sysdba

alter user sys identified by 新密码;

alter user system identified by 新密码;

　两种方法找回sys密码:

　　1.用windows验证(请确认OracleBaseDir/ora92/network/admin/sqlnet.ora文件中

　　SQLNET.AUTHENTICATION_SERVICES= (NTS)

　　这行未被注释),然后敲入

　　sql> connect sys/随意密码 as sysdba;

　　sql> alter user sys identified by 'new_password';

　　最后，重新启动Oracle服务。