Oracle on linux configurtion

we find out huge differences when retrieving huge amount of data from oracle , when it was installed on linux and on windows ( the windows was allot faster)

DBA:

 check the next articles and compare/add/fix the values that suggested by oracle for Linux  - you might find there what we are looking for https://docs.oracle.com/database/121/LTDQI/toc.htm#BHCCADGD

Have a look at this article http://www.dba-oracle.com/art_builder_tns.htm - there are some critical parameters to check (tcp.nodelay = yes ?????).

IT:

I suggest to improve the kernel for all our application server RedHat + zLinux with the necessary changes for best throughput , concentrate with the Network tuning

There are allot of resources how to improve it if you didn’t    (specially net.core.rmem_max , net.core.wmem_max)

e.g.  https://tweaked.io/guide/kernel/

https://russ.garrett.co.uk/2009/01/01/linux-kernel-tuning/

enjoy 

Yaniv