Problems with GWT app when deploying in Apache Tomcat 7 - gwt

Question

I'm using
GWT Framework
GXT 4.2
MySQL
Gilead
c3p0
Hibernate
When I run my application from eclipse works perfectly each remote procedures, then generated the compiler war with google and I'm success all 6 reviews finally copy the generated war (which is a folder and not a. War) in webapps apache-tomcat 7 and deploy my application apparently works but fails in the following:
Does not perform well validations logic to insert data into the database, sometimes it works and sometimes not.
When I make a data operation such as recovering "registered assists a teacher" sometimes the data recovering well and sometimes not (it should be noted that the tuples retrieved before passing through a logic that puts them a state "delay" by according to the time recorded example), it seems that failure is part of the java code, but when I run it from eclipse works perfectly the same example.
Every so long (8 hours average) to open the web page with the server path I get "Connection error with bd" or "error retrieving fields to the combo box" (I do this before showing)
If you could help me I'll be a thousand grateful, I think the google compiler does not compile the code in java good or not can be wrong.
Part of my hibernate.cfg files is:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration
DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-
3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.bytecode.use_reflection_optimizer">false</property>
<property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property>
<property name="hibernate.connection.password">password</property>
<property name="hibernate.connection.url">jdbc:mysql://domain/bd</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.current_session_context_class">thread</property>
<property
name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
<property name="hibernate.search.autoregister_listeners">false</property>
<property
name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvide
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SELECT 1;

Answer 1

I think it is the default 8h connection reset of mysql and hibernate.
It is impossible, that the hibernate (pure java, not gwt compiled to JS) can influence the database connection.
But your hibernate configuration seems to be correct.