3回答

• 

  玩转IT

  2016-05-10 13:56:03

  已采纳

  http://jingyan.baidu.com/article/5225f26b0d3555e6fa09083b.html希望能帮到你

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• 

  小鑫窝_2020

  2016-11-18 21:14:17

  alter user system account unlock;

  alter user system identified by '******';

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• 

  慕用1536416

  2016-10-12 16:49:06

  重新设置一下

  sqlplus / as sysdba
  alter user sys identified by ***

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