Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Oracle¼ÆËãʱ¼ä²î±í´ïʽ

--»ñÈ¡Á½Ê±¼äµÄÏà²îºÀÃëÊý
select ceil((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss')) * 24 * 60 * 60 * 1000) Ïà²îºÀÃëÊý from DUAL;
/*
Ïà²îºÀÃëÊý
----------
  86401000
1 row selected
*/
--»ñÈ¡Á½Ê±¼äµÄÏà²îÃëÊý
select ceil((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss')) * 24 * 60 * 60) Ïà²îÃëÊý from DUAL;
/*
Ïà²îÃëÊý
----------
     86401
1 row selected
*/
--»ñÈ¡Á½Ê±¼äµÄÏà²î·ÖÖÓÊý
select ceil(((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss'))) * 24 * 60)  Ïà²î·ÖÖÓÊý from DUAL;
/*
Ïà²î·ÖÖÓÊý
----------
      1441
1 row selected
*/
--»ñÈ¡Á½Ê±¼äµÄÏà²îСʱÊý
select ceil((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss')) * 24)  Ïà²îСʱÊý from DUAL;
/*
Ïà²îСʱÊý
----------
        25
1 row selected
*/
--»ñÈ¡Á½Ê±¼äµÄÏà²îÌìÊý
select ceil((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss')))  Ïà²îÌìÊý from DUAL;
/*
Ïà²îÌìÊý
----------
         2
1 row selected
*/
--»ñÈ¡Á½Ê±¼äÔ·ݲî
select (EXTRACT(year from to_date('2009-05-01','yyyy-mm-dd')) - EXTRACT(year from to_date('2008-04-30','yyyy-mm-dd'))) * 12 +
       EXTRACT(month from to_date('2008-05-01','yyyy-mm-dd')) - EXTRACT(month from to_date('2008-04-30','yyyy-mm-dd')) months
from dual;
/*
MONTHS
----------
13
1 row selected
*/
--»ñÈ¡Á½Ê±¼äÄê·Ý²î
select EXTRACT(year from to_date('2009-05-01','yyyy-mm-dd')) - EXTRACT(year from to_date('2008-04-30','yyyy-mm-dd')) years from dual;
/*
YEARS
----------
         1
1 row select


Ïà¹ØÎĵµ£º

ORACLE PL/SQL ¼¯ºÏAPI ×ܽá

ORACLE 10GµÄ¼¯ºÏAPI
 
¼¯ºÏAPI·½·¨×îÔçÊÇÔÚORACLE 8IÖÐÒýÈëµÄ¡£¼¯ºÏAPIÌṩÁ˼ò»¯·ÃÎʼ¯ºÏµÄ·½·¨¡£ÔÚORACLE 10GÒÔÇ°£¬ÕâЩ·½·¨È·Êµ¼ò»¯Á˶Լ¯ºÏµÄ·ÃÎÊ¡£µ«ÊÇ£¬²¢²»ÊÇ·ÇÒªÇóÕÆÎÕÕâЩ·½·¨²»¿É¡£´ÓORACLE 9IµÄINDEX-BY±íµ½ORACLE 10GµÄÁªºÏÊý×éµÄת»»£¬Ê¹ËüÃdzÉΪ±ØÐëÕÆÎյķ½·¨¡£
 
ÏÂÃæÊÇÎÒ´ÓÊéÉÏժ¼ÏµÄһР......

ORACLE PL/SQL¿ª·¢

¸Õ¸ÕÔÚinthirtiesÀÏ´óµÄ²©¿ÍÀï¿´µ½ÕâƪÎÄÕ£¬Ð´µÄ²»´í£¬ÕýºÃ×Ô¼º×î½üÔÚѧϰPL/SQL£¬×ª¹ýÀ´Ñ§Ï°Ñ§Ï°¡£
==================================================================================
bulk collectÊÇ¿ÉÒÔ¿´×öÊÇÒ»ÖÖÅú»ñÈ¡µÄ·½Ê½£¬ÔÚÎÒÃǵÄplsqlµÄ´úÂë¶ÎÀï¾­³£×÷ΪintoµÄÀ©Õ¹À´Ê¹Ó᣶ÔÓÚselect id into v from ... ......

oracle ³£ÓòéѯÃüÁî

 Êý¾Ý×Öµädict×ÜÊÇÊôÓÚOracleÓû§sysµÄ¡£
1¡¢Óû§£º
¡¡select username from dba_users;
¸Ä¿ÚÁî
¡¡alter user spgroup identified by spgtest;
2¡¢±í¿Õ¼ä£º
¡¡select * from dba_data_files;
¡¡select * from dba_tablespaces;//±í¿Õ¼ä
¡¡select tablespace_name,sum(bytes), sum(blocks)
from dba_ ......

Oracle¶¯Ì¬ÐÔÄܱí(1)

±¾ÊÓͼ³ÖÐø¸ú×ÙËùÓÐshared poolÖеĹ²Ïícursor£¬ÔÚshared poolÖеÄÿһÌõSQLÓï¾ä¶¼¶ÔÓ¦Ò»ÁС£±¾ÊÓͼÔÚ·ÖÎöSQLÓï¾ä×ÊԴʹÓ÷½Ãæ·Ç³£ÖØÒª¡£
V$SQLAREAÖеÄÐÅÏ¢ÁÐ
HASH_VALUE£ºSQLÓï¾äµÄHashÖµ¡£
ADDRESS£ºSQLÓï¾äÔÚSGAÖеĵØÖ·¡£
ÕâÁ½Áб»ÓÃÓÚ¼ø±ðSQLÓï¾ä£¬ÓÐʱ£¬Á½Ìõ²»Í¬µÄÓï¾ä¿ÉÄÜhashÖµÏàͬ¡£Õâʱºò£¬±ØÐëÁ¬Í¬ADDRESSÒ ......

Oracle OFS FS10755 ±¨´íÎÊÌâµÄ½â¾ö·½·¨


Oracle OFS FS10755 ±¨´íÎÊÌâµÄ½â¾ö·½·¨
 
 
ÔÚijЩÇé¿öÏ£¬ÖØ×°»òÖØÅä OFS ʱ£¬±ÈÈçÑé֤Ⱥ¼¯£¬»òÒƶ¯Èº¼¯×éʱ£¬»á±¨ FS10755 ´í£¬ ´íÎóÐÅÏ¢ÈçÏ£º
 
 
Oracle OFS error - FS10755: Error Creating the OracleFsWorker COM object After Oracle OFS installed, the verification could not pa ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ