RE: Anyone know any WP which explains about FTS vs Index Scan?

Show him these videos or have him read the blog.

https://www.youtube.com/channel/UCWeOtlakw8g01MrR8U4yYtg

http://use-the-index-luke.com/blog/2014-07/finding-all-the-red-mms

Liz

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] 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?

Hi
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? Cheers

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