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   create user user01 identified by u01;
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    ÏÖÔÚuser01µÄ¿ÚÁîÒÑÓÉ“u01”¸ÄΪ“usr01”¡£
    ³ýÁËalter userÃüÁîÒÔÍ⣬Óû§»¹¿ÉÒÔʹÓÃpasswordÃüÁî¡£Èç¹ûʹÓÃpasswordÃüÁÓû§ÊäÈëµÄпÚÁ²»ÔÚÆÁÄ»ÉÏÏÔʾ¡£ÓÐdbaÌØÈ¨µÄÓû§¿ÉÒÔͨ¹ýpasswordÃüÁî¸Ä±äÈÎºÎÆäËûÓû§µÄ¿ÚÁÆäËûÓû§Ö»Äܸıä×Ô¼ºµÄ¿ÚÁî¡£
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    Old password:
    New password:
    Retype new password:
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