Re: Odd NoClassDefFoundError Error
Re: Odd NoClassDefFoundError Error
- Subject: Re: Odd NoClassDefFoundError Error
- From: David Avendasora <email@hidden>
- Date: Wed, 8 Sep 2010 14:36:35 -0400
Okay, Steve Meyer figured it out.
The app started up just fine, but the first time the "Inbox" class was called, it called it's superclass which has a static variable that loads a set of EOs from the database. That DB connection failed, which left the superclass uninitialized and therefor basically corrupt, and therefor the NoClassDefFoundError.
I think we'll be digging around looking for more issues like this. Soon.
Dave
PS, Sorry about the lack of stack trace.
On Sep 8, 2010, at 1:20 PM, Chuck Hill wrote:
> Any exceptions in the log on start up? Were you upgrading something? Are you sure that this one instance did not just _not_ restart and so no see the new code?
>
> Chuck
>
>
> On Sep 8, 2010, at 10:12 AM, David Avendasora wrote:
>
>> Hi all,
>>
>> Has anyone else ever seen this:
>>
>> We have a server that is running 4 instances of one of our apps. Last night we restarted one of the instances and apparently it didn't properly load 1 class that is part of one of our internal frameworks.
>>
>> Every time a user tried a feature that used that one class, we got java.lang.NoClassDefFoundError. The other instances of the same app started from the same files on the hard drive were running fine.
>>
>> We restarted the affected instance and that eliminated the problem.
>>
>> We couldn't find any errors in any of the logs that would explain why the class wouldn't have properly loaded.
>>
>> It's all fine now, but this was a very strange issue.
>>
>> Anyone ever run into something like that?
>>
>> Dave _______________________________________________
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> --
> Chuck Hill Senior Consultant / VP Development
>
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