Stephen, I found the problem. One of the objects that I was setting as
attribute was not serializable, then there was an error on server. Thank's
for your help!

2011/3/29 Stephen Johnson <[email protected]>

> You probably should post some code where your inserting your attributes and
> retrieving them.
>
> 2011/3/29 Vinícius Gonçalves <[email protected]>
>
>> Yes, I do. Without this tag, sessions don't work localy too. I saw that
>> for sessions to manage attributes, they have to be serializable. I did it,
>> but it isn't working yet.
>>
>> 2011/3/29 Stephen Johnson <[email protected]>
>>
>>> Do you have this in your appengine-web.xml?
>>>
>>>     <sessions-enabled>true</sessions-enabled>
>>>
>>>
>>>
>>> 2011/3/28 Vinícius <[email protected]>
>>>
>>>> I implemented an application using Java. I used sessions and in the
>>>> development environment everything worked fine. But, in GAE real
>>>> environment, the attributes of the session just vanished and I don't
>>>> know why. The session was not expired and I didn't cleaned the
>>>> attributes in anywhere in my code. Is there someone here who knows
>>>> explain this problem? How can I fix it?
>>>>
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>>>>
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