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Oracle Êý×Öº¯ÊýÓ÷¨

 1. round(Num,n) :  ËÄÉáÎåÈëÊý×ÖNum£¬±£ÁônλСÊý£¬²»Ð´NĬÈϲ»ÒªÐ¡Êý£¬ËÄÉáÎåÈëµ½ÕûÊý¸öλ
 select ROUND(21.237,2) from dual; 
 ½á¹û£º 21.24
 2. trunc(Num,n) : ½ØÈ¡Êý×ÖNum£¬±£ÁônλСÊý£¬²»Ð´NĬÈÏÊÇ0£¬¼´²»ÒªÐ¡Êý
 select TRUNC(21.237,2) from dual;
 ½á¹û£º21.23
 3.MOD(m,n) £º ·µ»Øm³ýÒÔnµÄÓàÊý


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OracleÊý¾Ý¿â×Ô¶¨ÒåÒì³£µÄʹÓ÷½·¨

 À´Ô´£º²»Ïê  ×÷ÕߣºØýÃû  Ê±¼ä£º2009-9-6 17:14:04 Tags£º Orac ʹÓ÷½·¨
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ʹÓÃRAISE_APPLICATION_ERROR
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ѧϰoracle sql loader µÄʹÓÃ

Ò»£ºsql loader µÄÌØµã
oracle×Ô¼º´øÁ˺ܶàµÄ¹¤¾ß¿ÉÒÔÓÃÀ´½øÐÐÊý¾ÝµÄÇ¨ÒÆ¡¢±¸·ÝºÍ»Ö¸´µÈ¹¤×÷¡£µ«ÊÇÿ¸ö¹¤¾ß¶¼ÓÐ×Ô¼ºµÄÌØµã¡£
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Oracle ÅúÁ¿µ¼ÈëSequence

 select 'create sequence '||sequence_name||  
       ' minvalue '||min_value||  
       ' maxvalue '||max_value||  
       ' start with '||last_number||  
&n ......

Oracle 10gÊý¾Ý¿â¹Ø±ÕºóÎÞ·¨Æô¶¯£¬ORA

  ½üÈÕÔÚѧϰOracle 10GµÄ¹ý³ÌÖÐÓöµ½Ò»¸öÎÊÌ⣬¹Ø±ÕÊý¾Ý¿â£¨shutdown immediate£©ºó£¬ÔÙÖØÆôÊý¾Ý¿â(startup)£¬Æô¶¯Ê§°Ü£¬12514µÄ´íÎó£¬Èç¹ûͨ¹ýsqlplus /nolog½øÈëÊý¾Ý¿âÒÔºó£¬ÓÃconnÁ¬½Ó£¬Ò»Ñù²»ÐС£ÖØÐ´ò¿ªÒ»¸öcmd´°¿Ú£¬ÊäÈ룺
sqlplus
Óû§Ãû£ºsys@sim as sysdba£¬ÃÜÂëÊäÈëÍê³Éºó£¬ÈÔÈ»³öÏÖÈçÏ´íÎó£º
ORA ......
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