db-derby-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From bruehlicke <bruehli...@gmail.com>
Subject Re: Derby Embedded losing connection ?
Date Tue, 14 Feb 2012 15:17:12 GMT
Thanx for the info - at least I am not feeling alone ;-) ... I will
try to trigger the problem and catch all info. Than I will double
check our code to see the sequence of closing/reconnecting. After that
I will try to upgrade to 10.8.x and see if "it goes away".

Bernd

On Tue, Feb 14, 2012 at 8:42 AM, Bartosz, Jan (NSN - PL/Wroclaw)
<jan.bartosz@nsn.com> wrote:
> 1) First of all - check if you - or somebody in your team does not close
> connection explicitly;) - f.e.: there is some PMD rule about not closing
> connection and someone could fix this PMD...;) - was a real case in our
> project;)
>
> 2) In our project there was also problem with loosing connection and
> reconnecting in derby 10.7.x - don't know how about the previous
> versions, as we didn't use the DB so heavily.
> Problem disappeared in latest i.e. 10.8 ver. - where some improvements
> have been made regarding interruption handlings :
> * Improved interrupt handling - Interrupting connection threads no
> longer crashes the Derby engine.
> http://old.nabble.com/-ANNOUNCE--Apache-Derby-10.8.1.2-released-to315235
> 46.html#a31523546
>
> Hopefully helps!;)
>
>
> ..........................
> Regards / Pozdrowienia
> Jan Bartosz
> My contact info in Phonebook
> Click to call me by using Softphone
> -----Original Message-----
> From: ext bruehlicke [mailto:bruehlicke@gmail.com]
> Sent: Tuesday, February 14, 2012 3:12 PM
> To: Derby Discussion
> Subject: Re: Derby Embedded losing connection ?
>
> Thanx for you interest. Its version 10.5.3.0 - I will collect more
> info. No connection pooling by the way. Simple JDBC createConnection.
>
> Bernd
>
> On Tue, Feb 14, 2012 at 1:24 AM, Bartosz, Jan (NSN - PL/Wroclaw)
> <jan.bartosz@nsn.com> wrote:
>> Which derby version? Can you provide some stacktrace?
>>
>> ..........................
>> Regards / Pozdrowienia
>> Jan Bartosz
>> My contact info in Phonebook
>> Click to call me by using Softphone
>> -----Original Message-----
>> From: ext Bryan Pendleton [mailto:bpendleton.derby@gmail.com]
>> Sent: Tuesday, February 14, 2012 3:19 AM
>> To: Derby Discussion
>> Subject: Re: Derby Embedded losing connection ?
>>
>>> get reports (and also felt it our self) that our app simply is losing
>>> its connection to the DB.
>>
>> What are the symptoms, exactly?
>>
>> That is, what is it that makes you think you are losing your
> connection?
>>
>> One thing that occurs to me is a bit of a long-shot: are you using a
>> connection pooling framework of some sort? If so, is it possible that
>> the connection pooling framework is making a mistake and closing a
>> connection inappropriately?
>>
>> thanks,
>>
>> bryan
>>

Mime
View raw message