Changing kernel parameters

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I'm working with Linux in a big enterprise.
I now got a job with includes changing out some kernel parameters in
one of our internal web services (very critical).
Oracle (which we are running) are saying that this is should better
our SSO solution on the web servers.

Ok, so the kernel parameters are currently like these:
                net.ipv4.tcp_keepalive_time = 7200
                net.ipv4.tcp_keepalive_probes = 9
                net.ipv4.tcp_keepalive_intvl = 75

And Oracle want me (us) to change it to:
                net.ipv4.tcp_keepalive_time = 300
                net.ipv4.tcp_keepalive_probes = 3
                net.ipv4.tcp_keepalive_intvl = 20

I must do this on several HA servers, so I really dont want this to go wrong!

Do you guys have any tips, warnings or anything that can help me do
this as smooth as possible? Do you have any bad experiences with
changing these values?


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