Like LJ said its best left off on production as your changes to Production if your company follows a proper change process is minimal. And you Sync the cache whenever there is a genuine change in the cache.
Joe _____ From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of ravi rai Sent: Thursday, October 10, 2013 5:07 PM To: arslist@ARSLIST.ORG Subject: Re: Another Mid-tier cache question LJ, We do Quarterly releases.After each release we do manual flush Cache . Is is safe to turn this option off. It might resolve cache corruption issues which we encounter almost every alternate week Ravi _____ Date: Thu, 10 Oct 2013 14:57:48 -0600 From: lj.longw...@gmail.com Subject: Re: Another Mid-tier cache question To: arslist@ARSLIST.ORG ** Mark, I agree with Joe....but look at it this way....this check box tells the Mid-Tier server to periodically check your Remedy server for definition changes. How often are definition changes made in your production server?....Weekly? Monthly? Quarterly? You likely don't need an automated 'check' to be turned on in production as it doesn't change very often...and when it does, you can manually hit the 'sync' button. Regarding the app server being behind a load balancer...no, that won't affect things because regardless of which app node the mid-tier gets the cache from, it should be 'correct' :) On Thu, Oct 10, 2013 at 2:45 PM, Joe D'Souza <jdso...@shyle.net> wrote: ** I won't pretend to answer this question for you - but this is my guess.. >From what it looks like, this functionality performs a periodic check on the AR Server, to check for changes in definitions, and collects that information. This will in my opinion have some impact on performance. So as long as that interval is relatively high, and set in such a way that it occurs in periodic cycles when users are usually not online, it should be fine. My guess is that when this box is checked and the interval is defined, there is probably a definition check that happens that instant, followed next by the interval that is defined. So if this is done lets say at 11:00 PM when most users are usually offline in that time zone, and the interval is set for 86400 for the next check to happen at 11:00 PM the next night, you might not have too much to worry about. I would however not be comfortable doing it every few minutes, as it MAY impact the performance of that particular mid-tier server in that load balanced configuration.. Cheers Joe _____ From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of Brittain, Mark Sent: Thursday, October 10, 2013 4:34 PM To: arslist@ARSLIST.ORG Subject: Another Mid-tier cache question Hi All, Is it safe to use Definition Change Check (Peform Check) with load balancers? When the dev and production ITSM servers were installed Perform Check was no selected. Don't know why it was done that way. Later when I applied a patch to the mid-tier servers, BMC Support said I should select Perform Check. I did this on the development server which has one ar server, one mid-tier and no load balancers, but did not select Perform Check on production which is a VIP > load balanced to two mid-tiers which are load balanced to two ars servers in a server group. Particularly with small changes I really like using change check/perform check on dev and would like to use on the production servers. Since I don't know why this was not originally set up that way I figured I would ask the group first. ARS 7.6.06 SP3 Mid-Tier 7.6.06 SP4 Thanks Mark _ARSlist: "Where the Answers Are" and have been for 20 years_ _ARSlist: "Where the Answers Are" and have been for 20 years_ _ARSlist: "Where the Answers Are" and have been for 20 years_ _ARSlist: "Where the Answers Are" and have been for 20 years_ _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org "Where the Answers Are, and have been for 20 years"
