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OracleÁÙʱ±í

Temporary TablesÁÙʱ±í
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   »òÕß±£´æÔÚÒ»¸öÊÂÎñÖÐÐèÒªµÄÊý¾Ý¡£µ±»á»°Í˳ö»òÕßÓû§Ìá½»commitºÍ»Ø¹örollbackÊÂÎñµÄʱºò£¬ÁÙʱ±íµÄÊý¾Ý×Ô¶¯Çå¿Õ£¬
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ORACLE ÁÙʱ±í¿Õ¼äʹÓÃÂʹý¸ßµÄÔ­Òò¼°½â¾ö·½°¸

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1¡¢order by or group by (disc sortÕ¼Ö÷Òª²¿·Ö)£»
2¡¢Ë÷ÒýµÄ´´½¨ºÍÖØ´´½¨£»
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4¡¢union & intersect & minus sort-merge joins£»
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OracleÁÙʱ±í¿Õ¼ä±©ÕǵÄÏÖÏó¾­¹ý·ÖÎö¿ÉÄÜÊÇÒÔϼ¸¸ö·½ÃæµÄÔ­ÒòÔì³ÉµÄ£º
1. ûÓÐΪÁÙʱ±í¿Õ¼äÉèÖÃÉÏÏÞ£¬¶øÊÇÔÊÐíÎÞÏÞÔö³¤¡£µ«ÊÇÈç¹ûÉèÖÃÁËÒ»¸öÉÏÏÞ£¬×îºó¿ÉÄÜ»¹ÊÇ»áÃæÁÙÒòΪ¿Õ¼ä²»¹»¶ø³ö´íµÄÎÊÌ⣬ÁÙʱ±í¿Õ¼äÉèÖÃ̫С»áÓ°ÏìÐÔÄÜ£¬ÁÙʱ±í¿Õ¼ä¹ý´óͬÑù»áÓ°ÏìÐÔÄÜ£¬ÖÁÓÚÐèÒªÉèÖÃΪ¶à´óÐèÒª×ÐϸµÄ²âÊÔ¡£
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ORACLE DSI ½éÉÜ

DSIÊÇData Server
InternalsµÄËõд,ÊÇOracle¹«Ë¾ÄÚ²¿ÓÃÀ´ÅàѵOracleÊۺ󹤳ÌʦʹÓõĽ̲Ä.ÓÉÓÚijÖÖÔ­ÒòÁ÷Âä½­ºþ,
Êܵ½ÖÚ¶àOracle°®ºÃÕßµÄ×·Åõ, ²»¹ýÒªÊǹ¦Á¦²»µ½, ÔĶÁ·´¶øÎÞÒæ. DSI3ÊÇOracle 8ϵÁеÄ, DSI4ÊÇOracle 9ϵÁеÄ.
ÕâÑùµÄÎĵµÉÏͨ³£¶¼Ó¡×Å:Oracle Confidential:For internal Use Only.
DSI301 Advanced Server Support Skills
DSI302 Data Management
DSI303 Database Backup and Recovery
DSI304 Query Management
DSI305 Database Tuning
DSI306 Very Large Databases
DSI307 Distribution and Replication
DSI308 Parallel Server
DSI401 dump, crash and corruptions
DSI401 advance support skill
DSI401e Advanced Support Skill
DSI404 SQL TUNNING
DSI405 Performance Tuning
DSI406 VLDB(Very Large)
DSI407 Dataguard replication
DSI408 Real Application Clusters Internals ......

11gµÄOracle Grid Infrastructure

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Oracle Grid Infrastructure
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The Oracle grid infrastructure for a standalone server is the Oracle
software that provides system support for an Oracle database including
volume management, file system, and automatic restart capabilities. If
you plan to use Oracle Restart or Automatic Storage Management, you must
install the grid infrastructure before installing your database. The
grid infrastructure for a standalone server is the software that
includes Oracle Restart and Automatic Storage Management. Oracle
combined the two infrastructure products into a single set of binaries
that is installed as the grid infrastructure home. ......

Oracle´æ´¢¹ý³Ì

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--------------------×Ô¶¨Ò庯Êý¿ªÊ¼--------------------
CREATE OR REPLACE FUNCTION fn_WFTemplateIDGet
(
    TemplateCategoryID NUMBER,
    OrganID NUMBER,
    TemplateMode NUMBER
)
RETURN NUMBER
IS
    TemplateID NUMBER;
    ItemCount NUMBER;
BEGIN
    --ȡģ°åÖÐÖ¸¶¨»ú¹¹,Ö¸¶¨·ÖÀàµÄ¹¤×÷Á÷Ä£°å¼Ç¼
    SELECT COUNT(*) INTO ItemCount
    from t_WFTemplate
    WHERE f_OrganID = OrganID AND f_TemplateCategoryID = TemplateCategoryID;
    IF ItemCount = 1 THEN
        SELECT f_TemplateID INTO TemplateID
        from t_WF ......
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