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sql> alter system set job_queue_processes=n;£¨n>0£©
job_queue_processes×î´óֵΪ1000
 
²é¿´¸ÃÖµ show parameter processes
 
²é¿´job queue ºǫ́½ø³Ì
sql>select name,description from v$bgprocess;
 
¶þ£¬dbms_job package Ó÷¨½éÉÜ
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Broken()¹ý³Ì¡£
change()¹ý³Ì¡£
Interval()¹ý³Ì¡£
Isubmit()¹ý³Ì¡£
Next_Date()¹ý³Ì¡£
Remove()¹ý³Ì¡£
Run()¹ý³Ì¡£
Submit()¹ý³Ì¡£
User_Export()¹ý³Ì¡£
What()¹ý³Ì¡£
 
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Õâ¸ö¹ý³ÌÓÐÈý¸ö²ÎÊý£ºjob ¡¢brokenÓënext_date¡£
 
PROCEDURE Broken (job       IN binary_integer,
                  Broken    IN boolean,
                  next_date IN date :=SYSDATE)
 
job²ÎÊýÊǹ¤×÷ºÅ£¬ËüÔÚÎÊÌâÖÐΨһ±êʶ¹¤×÷¡£
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next_date²ÎÊýָʾÔÚʲôʱºò´Ë¹¤×÷½«ÔÙ´ÎÔËÐС£´Ë²ÎÊýȱʡֵΪµ±Ç°ÈÕÆÚºÍʱ¼ä¡£
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ÖØÐÂÆô¶¯×´Ì¬ÎªbrokenµÄjob£¬ÓÐÈçÏÂÁ½ÖÖ·½Ê½;
a¡¢ÀûÓÃdbms_job.run()Á¢¼´Ö´ÐиÃjob
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   sql>dbms_job.run(:jobno) ¸ÃjobnoΪsubmit¹ý³ÌÌύʱ·µ»ØµÄjob number
   sql>end;
   sql>/
b¡¢ÀûÓÃdbms_job.broken()ÖØÐ½«broken±ê¼ÇΪfalse
   sql>begin
   sql>dbms_job.broken (:job,false,next_date)
   sql>end;
   sql>/
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PROCEDURE Change (job        IN binary_integer,
          &n


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