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Domino Resource Issues under XPages
   

A couple of weeks ago, we launched a new XPages app. Hopefully the first of many. It was very impressive and we got a lot of hits....

...until the server crashed.

Not a big deal. Our server is set to restart automatically, and it was up and running in no time. Then about 1.5 days later we had another crash.

We've decided to tackle this on a few fronts, first of all we're rewriting some parts of the app to be a bit less intense and to take better advantage of the recycler. That's all cutting edge development stuff, so it's really not "me".

On the admin side, I wanted to see if we could release resources a bit. I checked the server close to a crash but there's no indication on the Windows 2003 side of things. Of course, the Notes Logs tell a different story.

HTTP JVM: CLFAD0211E: Exception thrown. For more detailed information, please consult error-log-0.xml located in e:/Lotus/Domino/data/domino/workspace/logs
HTTP JVM: >>>>
HTTP JVM: The XPages runtime engine faced an OutOfMemoryError
HTTP JVM: You can fix this by increasing the value of the HTTPJVMMaxHeapSize variable in notes.ini
HTTP JVM: >>>>
HTTP JVM: Out of memory exception occurred servicing request for: /publicsite/OurNewXpagesDB.xsp - HTTP Code: 500. For more detailed information, please consult error-log-0.xml located in e:/Lotus/Domino/data/domino/workspace/logs
HTTP Web Server: Command Not Handled Exception [/publicsite/OurNewXpagesDB.xsp] Anonymous
HTTP JVM: CLFAD0211E: Exception thrown. For more detailed information, please consult error-log-0.xml located in e:/Lotus/Domino/data/domino/workspace/logs

So, we decided to try a http restart next time these error messages started building up.

It worked!
Doing a TELL HTTP RESTART bought us two more days of uptime.


To Restart or not to Restart?
We looked around and found that our problems weren't as unique as we'd imagined. There are a few people on 8.5 and above (we're currently 8.5.2) who have this problem.

Apparently also, a Tell HTTP Restart flushes memory but doesn't do much for the JVM.

To flush the JVM, we need to think about;

TELL HTTP QUIT
then after a few minutes
LOAD HTTP

or as the guy in the IT Crowd says "have you tried turning it off and on again?"

We'll be doing this until we get our application sorted but the question is; should this be part of our normal nightly routine? Maybe it's good practice to restart your web server's service nightly - especially if you have a cluster which could take the load while the restart occurs.

Does anyone think that this is "best practice"?


---------------------
http://dominogavin.blogspot.com/2011/07/domino-resource-issues-under-xpages.html
Jul 17, 2011
84 hits



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327


How to do Bullets and Numbering in IBM Notes
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How to Figure out When an Extranet User last logged into your Domino Server
Thu, Apr 25th 2013 7:42p   Gavin Bollard
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91


Apple iOS6 Calendaring bug Affecting Exchange (and by extension, Lotus)
Wed, Oct 24th 2012 10:42p   Gavin Bollard
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