HA°²×°oracle 11G ¼àÌýÎÊÌâ
»·¾³ÊÇÕâÑùµÄ
hostA hostB °²×°rhel5.4 ÅäÖÃrhcs¼¯ÈºÌ×¼þ£¬¼¯Èº×´Ì¬Õý³£¸¡¶¯ip¡¢Îļþϵͳ¶¼¿ÉÒÔÕý³£Çл»¡£
ÔÚhostAÉϰ²×°oracle 11G £¬³ÌÐòºÍÊý¾Ý¿â¶¼·Åµ½¼¯ÈºµÄÎļþϵͳÉÏ£¬ÕâÑù½Úµã»ú¹ÊÕÏʱֻҪִÐм¯Èº½Å±¾¾Í¿ÉÒÔ°ÑÊý¾Ý¿âÆô¶¯
ÏÖÔÚµÄÎÊÌâÊÇ
ÎÒÏ£ÍûÐÞ¸Älistener.oraºÍtnsnames.oraÖеÄhostÀ´Ê¹listenerÔÚ¸¡¶¯ipÉϼàÌý£¬Ä¿Ç°hostÐÞ¸ÄΪhostA»òÕßhostB¶¼¿ÉÒÔÔÚ¶ÔÓ¦µÄ½ÚµãÆô¶¯¼àÌý³ÌÐò£¬¸ÄΪhaºó²ÉÓö¯Ì¬×¢²áʱ£¬Ìáʾ the listener supports no services,¾²Ì¬×¢²áÌáʾUNKNOWN£¬Ö´ÐÐalter system registerÒ²×¢²á²»ÉÏ£¬Çó½â¡£
/etc/hosts
192.168.0.1 hostA
192.168.0.2 hostB
192.168.0.3 ha
²»¶®£¬°ï¶¥£¬¹Ø×¢
listener.oraµÄÎļþÊÇÔõôÅäµÄ
listener.ora²ÎÊýÎļþÌù³öÀ´,ÇÆÇÆ...
listener.ora
# listener.ora Network Configuration File: /app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = ORCL)
(ORACLE_HOME = /app/oracle/product/11.2.0/dbhome_1/)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = ha)(PORT = 1521))
) <
Ïà¹ØÎÊ´ð£º
±¾À´ÒªÐ´¸öupdateÓï¾ä
update table_a A
set A.flag=1
where A.id in (select B.id from table_b B)
½á¹ûÎóд³É
update table_a A
set A.flag=1
where ......
ÏÖÓÐÒÔÏÂÊý¾Ý£º
ID Name
1 Jack,Tom,Ben
2 Mary,Simth,Tony,Jay
ת»»Îª£º
ID Name
1 Jack
1 Tom
1 Ben
2 Mary
2 Simth
2 Tony
2 Jay
ÒªÇóʹÓÃSQL²éѯÍê³É£¬ÓÉÓÚÌõ¼þÏÞÖÆ£¬²»ÄÜʹÓà ......
´ó¼ÒºÃ,ÎÒÏÖÔÚ°Ñoracle·þÎñÆ÷ÉÏÃæµÄÔʼÎļþ,ÏÂÔØµ½±¾»úÁË.ÎÒÏëÔÚ±¾»ú·ÃÎÊÊý¾Ý¿âÔõôÉèÖð¡.ÊDz»ÊÇÀàËÆ¿ÉÒÔ½¨Á¢Ò»¸öʲôÐéÄâ·þÎñÆ÷À´ÊµÏÖ.Çë´ó¼Ò³ö³öÖ÷Òâ
ÒýÓÃ
´ó¼ÒºÃ,ÎÒÏÖÔÚ°Ñoracle·þÎñÆ÷ÉÏÃæ ......
ÎÒÐèÒªÓö¨Ê±Ö´Ðд洢¹ý³Ì£¬µ«ÊÇÎҵĴ洢¹ý³ÌÀïÓõ½µÄ±íÊÇÓÐÁ´½ÓµÄ£¬¾ÍÏñÕâÑù£º
.....from table_name@cxdb_link
Ò²¾ÍÊÇÎÒ½¨Á¢¶¨Ê±Æ÷µÄÊý¾Ý¿âÓë±íËùÔÚµÄÊý¾Ý¿â²»ÊÇÒ»¸ö¿â£¬£¨ÒòΪ±íËùÔÚµÄÊý¾Ý¿âÎÒûÓÐȨÏÞ½¨Á¢¶¨Ê ......
±íÃû£ºgk_record_new£¨ÕâÊÇÒ»¸ö¿¼ÇÚ±í£¬ËùÓÐÔ±¹¤µÄ¿¼ÇÚÊý¾Ý¶¼´æ·ÅÔÚÕâ¸ö±íÀÖ÷¼üΪ¿¨ºÅºÍʱ¼ä£©
±í½á¹¹£º
¿¨ºÅ£ºNUMBER(10)
»ùÕ¾£ºVARCHAR2(20)
ʱ¼ä£ºDATE
³öÈë±êÖ¾£ºVARCHAR2(1)
±íÊý¾Ý
¿¨ºÅ »ùÕ¾ ʱ¼ä ³ ......