RE: 8i pl/sql question

From: John Flack <JohnF_at_smdi.com>
Date: Tue, 16 Dec 2003 05:44:27 -0800
Message-ID: <F001.005DA15A.20031216054427@fatcity.com>

Does myFunction1 often get called with the same arguments? In your example, the second argument is never repeated, but in the real thing, would the same second argument be likely to repeat? If myFunction1 gets the same arguments, will it always return the same value? If so, then it is a deterministic function, and you can declare it as one by putting the keyword DETERMINISTIC before the IS/AS in its header. This way the optimiser will know not to recalculate the function if it is called again with the same arguments, but will reuse the value it calculated before.

-----Original Message-----
Sent: Monday, December 15, 2003 7:54 PM
To: Multiple recipients of list ORACLE-L

can you return multiple values from a modified version of myfunction(1) ?? If so, then you can replace multiple calls by only one. And no, bulk binds is only within dml/select statements.

Raj

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Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !

-----Original Message-----
Sent: Monday, December 15, 2003 4:34 PM
To: Multiple recipients of list ORACLE-L

Hi:

Oracle 8173 DB.

I have a package funtion, part of it is doing something like this:

  utl_file.put_line(fpn,  myFunction1(myID, 1));
  utl_file.put_line(fpn,  myFunction1(myID, 8));
  utl_file.put_line(fpn,  myFunction1(myID, 6));
  utl_file.put_line(fpn,  myFunction1(myID, 35));
  utl_file.put_line(fpn,  myFunction1(myID, 33));
  utl_file.put_line(fpn,  myFunction1(myID, 7));
  utl_file.put_line(fpn,  myFunction1(myID, 102));
  utl_file.put_line(fpn,  myFunction1(myID, 10));
  utl_file.put_line(fpn,  myFunction1(myID, 9));
  utl_file.put_line(fpn,  myFunction1(myID, 15));
  utl_file.put_line(fpn,  myFunction1(myID, 2));

myFunction1 (returns a varchar2 string) here is another function in the same package and it calls a bunch of other functions.

Is there a way to speed up the performance of the above lines by using "bulk bind"? I am brain-dead now and can not seem to find if it can be done and/or how it can be done.

TIA. Guang

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Author: John Flack
  INET: JohnF_at_smdi.com

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