| Had to put this in the backburner for a bit, but had already tired 400 for long and longc with no impact, and tried with 4000 after | your suggestion. The round trips remained at 534,073 for all the tests. | I must have lost track of the numbers - I thought you had said something about 100,000 rows and 359,000 round trips. I was expecting a change in longchunksize and long to reduce this to at most 2 round trips per row. Regards Jonathan Lewis http://jonathanlewis.wordpress.com/all-postings Author: Oracle Core (Apress 2011) http://www.apress.com/9781430239543 ----- Original Message ----- From: "Larry Elkins" <elkinsl@xxxxxxxxxxx> To: <jonathan@xxxxxxxxxxxxxxxxxx>; "'Oracle-L'" <oracle-l@xxxxxxxxxxxxx> Sent: Saturday, May 04, 2013 2:30 PM Subject: RE: LOB Operation and SQL*Net Message From Client and cursor #0 | Copied the table to an 11.2.0.2 DB sitting on a non-VM database server, SQL*Plus with the 4000 settings. I've made sure the table | was cached for all these tests to eliminate PIO differences (which I would be able to account for anyway since the would be recorded | in the trace). So, for both 10g VM and 11g non-vm, here's what we would see: | | TRIPS: 534,073 | ROWS: 300,700 | LOBREADS: 233,700 (66,700 null nclobs) | LOBREAD TIME: 5.918873 seconds, median 24 microseconds, avg 25.3268 microsecond, with a few outlier on the high side, and a | fastest of 23 microseconds. | -- //www.freelists.org/webpage/oracle-l