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Slow running query

From: Krishnaswamy, Ranganath <Ranganath.Krishnaswamy_at_blr.hpsglobal.com>
Date: Mon, 27 Jan 2003 05:03:57 -0800
Message-ID: <F001.0053AEA4.20030127050357@fatcity.com>

        Hi List:

        I have the below query which is taking 5 min. 20 sec. to fetch the records. Can you please let me know as to how do I reduce the responste time? I have created indexes on Fahrzeug.FZGBRIEF and Historie.mytechobjekt and also the Oid column is uniquely indexed. I replaced the FIRST_ROWS hint with RULE hint as a result of which it is taking 3-4 min.

        select /*+FIRST_ROWS*/ count(*)         

        from         

        ZPAB.FZGBRIEF B1,                  ZPAB.FAHRZEUG F1,                  ZPAB.HISTORIE H1                  where         

        F1.FZGBRIEF = B1.OID                  AND F1.OID = H1.MYTECHOBJEKT(+)                  AND (H1.CCCONTROL IN(1, 2, 3)                  OR NOT EXISTS         

	(SELECT /*+INDEX_FFS(HISTORIE, I_MYTECHOBJEKT) */ ZPAB.FAHRZEUG.OID
	FROM ZPAB.FAHRZEUG,ZPAB.HISTORIE 
	
	WHERE ZPAB.FAHRZEUG.OID = ZPAB.HISTORIE.MYTECHOBJEKT and
	
	ZPAB.FAHRZEUG.oid=F1.oid))
	
	AND F1.AMTLICHESKENNZEICHEN LIKE 'DD%'

Any help in this regard is very much appreciated.

Thanks and Regards,

Ranganath
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Author: Krishnaswamy, Ranganath
  INET: Ranganath.Krishnaswamy_at_blr.hpsglobal.com

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