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EXCEPTION
  WHEN OTHERS THEN
    ROLLBACK;
END ...
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EXCEPTION
    WHEN OTHERS THEN
      DBMS_OUTPUT.put_line('sqlcode : ' ||sqlcode);
      DBMS_OUTPUT.put_line('sqlerrm : ' ||sqlerrm);
      ROLLBACK;
END ...
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ORACLE°ó¶¨±äÁ¿µÄʹÓà ժ³­×ÔһƬÌû×Ó

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Oracle Êý¾Ý¿âµÄ°ó¶¨±äÁ¿ÌØÐÔ¼°Ó¦ÓÃ
¹Ø¼ü´Ê:
°ó¶¨±äÁ¿(binding variable),¹²Ïí³Ø(shared buffer pool), SGA(system global area);
ÔÚ¿ª·¢Ò»¸öÊý¾Ý¿âϵͳǰ,ÓÐË­¶ÔOracle ϵͳÁ˽âºÜ¶à,ÓÈÆäÊÇËüµÄÌØÐÔ,ºÃÏóºÜÉÙ°É;¶Ô³õѧÕßÀ´½²,Õâ¸üÊDz»¿ÉÄܵÄÊÂÇé;½ö½ö¼òµ ......

oracle Ò»´Îɾ³ý¶àÕűíµÄÊý¾Ý£¨Î´²âÊ԰棩

spool d:\deletetb.sql;
select 'delete ' || table_name || ' where to_char(col,'||'''yyyy'''||')='||'''2007'''||';'
  from user_tables
where table_name in  (select 'HS_' || lpad(rownum, '2', '0')
          from dual
        ......

OracleÊý¾Ý¿âÖ÷»úÃûÖØ¹¹£¨For Windows£©

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  lsnrctl   stop  
  lsnr ......

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1.LOWER(str) Ç¿ÖÆÐ¡Ð´
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3.INITCAP(str) ÿ¸öµ¥´ÊÊ××Öĸ´óд
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SQL> select initcap('my_boy') from dual; --·µ»Ø"My_Boy"
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4.CONCAT(str1,str2£©Á¬½Óº¯Êý,Á¬½Óstr1ºÍstr2×Ö·û´®
5.SUBSTR(string,a[,b])·µ»ØstringµÄÒ»²¿·Ö£¬aºÍbÒÔ×Ö·ûΪµ¥Î»¡£´Ó× ......
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