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oracle job µãµÎ


³õʼ»¯Ïà¹Ø²ÎÊýjob_queue_processes
alter system set job_queue_processes=39 scope=spfile;//×î´óÖµ²»Äܳ¬¹ý1000 ;job_queue_interval = 10 //µ÷¶È×÷ҵˢÐÂÆµÂÊÃëΪµ¥Î»
job_queue_process ±íʾoracleÄܹ»²¢·¢µÄjobµÄÊýÁ¿£¬¿ÉÒÔͨ¹ýÓï¾ä¡¡¡¡
show parameter job_queue_process;
À´²é¿´oracleÖÐjob_queue_processµÄÖµ¡£µ±job_queue_processֵΪ0ʱ±íʾȫ²¿Í£Ö¹oracleµÄjob£¬¿ÉÒÔͨ¹ýÓï¾ä
ALTER SYSTEM SET job_queue_processes = 10;
À´µ÷ÕûÆô¶¯oracleµÄjob¡£
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dba_jobs
all_jobs
user_jobs
dba_jobs_running °üº¬ÕýÔÚÔËÐÐjobÏà¹ØÐÅÏ¢
 
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Ìá½»jobÓï·¨£º
begin
sys.dbms_job.submit(job => :job,
                      what => 'P_CLEAR_PACKBAL;',
                      next_date => to_date('04-08-2008 05:44:09', 'dd-mm-yyyy hh24:mi:ss'),
                      interval => 'sysdate+ 1/360');
commit;
end;
/
 
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´´½¨JOB
variable jobno number;
begin
dbms_job.submit(:jobno, 'P_CRED_PLAN;',SYSDATE,'SYSDATE+1/2880',TRUE);
commit;
ÔËÐÐJOB
SQL> begin
         dbms_job.run(:job1);
         end;
         /
ɾ³ýJOB
SQL> begin
        dbms_job.remove(:job1);
        end;
        /
DBA_JOBS
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jdbcÁ¬½ÓOracle

      ËäȻѧϰJavaºÜ¾ÃÁË£¬×Ô¼ºÒ²Á¬½Ó¹ýһЩÊý¾Ý¿â£¬±ÈÈçmysqlÖ®ÀàµÄ£¬Èç½ñÄØ£¬Ò²Ñ§Ï°ÁËÒ»¶Îʱ¼äµÄOracle£¬È»¶øÄØ£¬½ñÌìÊÇÎÒµÚÒ»´ÎÁ¬½ÓOracle£¬ºÙºÙ£¬Ó¦¸Ã»¹²»ËãÌ«³Ù°É¡£
    ½ñÌìÄØ£¬Óе㱿׾£¬´ó¼ÒĪЦ£¡
    ÎÒÕâÊÇÒ»¸ö²éѯÀý×Ó
    Ê×ÏÈ£¬Ô ......

oracleµÄTX lockÐÅÏ¢ÔÚÄÄÀ

ÎÒÃǶ¼ÖªµÀORACLE²»»á·¢ÉúËøÉý¼¶£¬Ëø¶ÔÓÚORACLEÀ´Ëµ²¢²»ÊÇϡȱ×ÊÔ´£¬ÎªÊ²Ã´DML lock¶ÔÓÚORACLEÀ´Ëµ²»ÊÇϡȱ×ÊÔ´£¬ÏÂÃæÀ´Ñ°ÕҴ𰸡£
SQL> select * from emp where sal>2999;
EMPNO ENAME      JOB         MGR HIREDATE     ......

ѧϰOracleÖÐSequencesµÄʹÓÃ

1. ´´½¨ Sequence
ʹÓÃÈçÏÂÃüÁîн¨sequence(Óû§ÐèÒªÓÐCREATE SEQUENCE »òÕßCREATE ANY SEQUENCEȨÏÞ):
CREATE  SEQUENCE test_sequence
INCREMENT  BY   1   --  ÿ´Î¼ÓµÄ¸öÊý¾Ý 
START  WITH   1   --  ´Ó1¿ªÊ¼¼ÆÊý 
NOMAXVALUE& ......

[轉載]ORACLE¼Æ»®(schedule)Ïê½â

. ´´½¨job
jobÊÇÊ²Ã´ÄØ? ¼òµ¥µÄ˵¾ÍÊǼƻ®(schedule)¼ÓÉÏÈÎÎñ˵Ã÷. ÁíÍ⻹ÓÐһЩ±ØÐëµÄ²ÎÊý.
ÕâÀïÌáµ½µÄ"ÈÎÎñ"¿ÉÒÔÊÇÊý¾Ý¿âÄÚ²¿µÄ´æ´¢¹ý³Ì,ÄäÃûµÄPL/SQL¿é,Ò²¿ÉÒÔÊDzÙ×÷ϵͳ¼¶±ðµÄ½Å±¾.
¿ÉÒÔÓÐÁ½ÖÖ·½Ê½À´¶¨Òå"¼Æ»®":
1) ʹÓÃDBMS_SCHDULER.CREATE_SCHEDULE ¶¨ÒåÒ»¸ö¼Æ»®;
2) µ÷ÓÃDBMS_SCHDULER.CREATE_JOBE¹ý³ÌÖ±½ÓÖ¸¶ ......
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