Tue 03 Jun 2008

    Oracle-ORA-01045-错误

    Posted On web At: 2008-06-03 23:55:15

    1. 问题：
        在用PL/SQL进行登录时，出现："ora-01045 :user system lacks create session privilege; logon denied"。
        
    2. 原因：没有权限
        在Google找到这段的说明：
        What does "ORA-01045: user USERNAME lacks CREATE SESSION privilege;
       logon denied" mean?
       
        It means that the username and password with which you tried to login are known and accepted by the oracle server, but that the usernam

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    Tags: Oracle 评论(1) 阅读(328)

    Tue 03 Jun 2008

    Oracle计算时间差的方法

    Posted On web At: 2008-06-03 23:54:46

    Oracle计算时间差的方法。总结了一下:
    天：
    ROUND(TO_NUMBER(END_DATE - START_DATE))
    小时：
    ROUND(TO_NUMBER(END_DATE - START_DATE) * 24)
    分钟：
    ROUND(TO_NUMBER(END_DATE - START_DATE) * 24 * 60)
    秒：
    ROUND(TO_NUMBER(END_DATE - START_DATE) * 24 * 60 * 60)
    毫秒：
    ROUND(TO_NUMBER(END_DATE - START_DATE) * 24 * 60 * 60 * 60)

    --EOF--

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    Tags: Oracle 评论(1) 阅读(548)