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Home -> Community -> Mailing Lists -> Oracle-L -> RE: collections/PLSQL tables
Raj,
Well, you can limit the number of rows BULK COLLECT will return with the LIMIT keyword. Wouldn't that take care of the performance problem you refer to? And isn't it affected by the amount of free memory on the host? For insteance, there's very little "free" memory and you bulk collect 1000 rows and the host starts paging.
Any comments?
Lisa Koivu
I LOVE MY JOB I LOVE MY JOB I LOVE MY JOB
Fairfield Resorts, Inc.
954-935-4117
-----Original Message-----
From: Jamadagni, Rajendra [SMTP:Rajendra.Jamadagni_at_espn.com] Sent: Thursday, September 06, 2001 12:43 PM To: Multiple recipients of list ORACLE-LSubject: RE: collections/PLSQL tables
Bill,
If you are or will be retrieving more than say 10000 rows, I'd say do not use BULK COLLECT (performance goes down)... instead use a pl/sql table of records. But I'd say even with the inconvenience of specifying a separate collection for each column, use for BULK BINDS for INSERT/UPDATE/DELETE is worth the effort, as it really speeds up the processing.
Oracle recommends that for faster performance, instead of using a TABLE of RECORDS, use a RECORD of TABLES. The speed benefit is due to the way data elements storage technique implemented for these two types.
According to rumors, 9i is supposed to offer more, but I haven't got time right now to test it out.
Raj
QOTD: Any clod can have facts, but having an opinion is an art !
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Author: Jamadagni, Rajendra
INET: Rajendra.Jamadagni_at_espn.com
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