RE: Pipelined table Functions
- From: "Jamadagni, Rajendra" <Rajendra.Jamadagni@xxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 9 Apr 2004 07:36:29 -0400
Wow ... when I implemented pipelined functions, I didn't really care =
much about what happens in SGA and PGA. I wanted to get data fast i.e. =
as soon as available (as in select statements) and couldn't wait sitting =
around for oracle to return ALL data at once (as it happens in =
functions and procedures).
My recommendation is 'to try it first' ... in your environment and then =
see. If I mention any inefficiency, it may or may not happen in your =
environment. In early versions of 9i, there were few bugs, but most were =
resolved by 9202 ... but it is worth checking at Metalink.
One thing you should watch out for is ... pipelined functions still have =
an outstanding issue with cursor_sharing=3Dforce setting, they like it =
to be EXACT and dislike FORCE for whatever reason.
Try it out ... it is a nice feature.
Raj
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of sushma manjunath
Sent: Friday, April 09, 2004 7:27 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: Pipelined table Functions
Is their some white paper or documentation that describes in detail how =
a=20
table function affects a system, and what happens within the SGA / PGA =
when=20
this process runs. I have read the docs on OTN and they explain pipeline =
and=20
parallel but do not go into any down side for this function in an OLAP=20
environment. I am looking for some possible repercussions of this =
function=20
in the way of resource, and performance issues that might arise.
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