The machine ran out of RAM. Mike was dead on (of course). 

Thanks for your input everyone.

David


On 2012-02-05, at 2:50 AM, Alexander Spohr wrote:

> 
> Am 04.02.2012 um 18:48 schrieb David Holt:
> 
>> Does anyone know if there is a limit to the number of instances you can run 
>> under JavaMonitor? Is it a fixed limit, or a configuration? I seem to have 
>> hit it.
> 
> There is a limit in the WebObjects adaptor but that only hits the web server.
> 
> 
>> My new instance dies silently. No log, just a new "Death". I can start the 
>> application from the command line. After trying everything I could think of, 
>> I stopped an instance of another application, and tried again. This time it 
>> works.
> 
> Did you try to start it with the exact parameters from monitor? (after 
> removing the projectPath()-thingie)
> Hitting any OS or connection limits?
> 
>> The number of instances is 52.
> 
> We currently run more than 500 instances for 21 apps on six machines, with 
> one monitor. The biggest apps use 48 instances. When we bounce we double the 
> instance count for a short time. No problems.
> 
> 
>       atze
> 

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