Show him these videos or have him read the blog.
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Ls Cheng
Sent: Tuesday, April 10, 2018 12:14 PM
To: Oracle Mailinglist
Subject: Anyone know any WP which explains about FTS vs Index Scan?
I have a Dinosaur stating we must always use index range scan no matter OLTP or
DWH systems. This guys still lives in the late 90's and Oracle 7 (although he
claims he is 18 years veteran expert from 7 up to 12c), the thing is I cannot
find any Oracle WP or similar in the docs which states Full Table Scan is not
evil except Tom Kyte (asktom). I have even demo-ed him with a very simple two
table join example with FTS and index range effect when a large amount of data
need to be accessed, still he says in Oracle docs states that scattered reads
(FTS) mist be reduced!
Does anyone know any official pointer, in WP form or MOS support note which
talks about FTS vs index scans?