Hibernate.engine.jdbc.spi.Sqlexceptionhelper log Exception, SQL state null

Question

1I’m having this problem in my Hibernate Validity to Newly established conection, when doing the query, it loses the session, only after giving several F5 the session back.. can anyone help me? ... follow the image of Error. 1.Context. xml

<?xml version="1.0" encoding="UTF-8"?>
<Context path="/appjsf" allowCasualMultipartParsing="true">
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<Manager 
 className="org.apache.catalina.session.
 PersistentManager"maxActiveSessions="-1" 
 maxIdleBackup="-1" maxIdleSwap="-1" 
 minIdleSwap="-1" saveOnRestart="false">
 <Store className="org.apache.catalina.session.FileStore"/>
 </Manager>
 <Resources cacheMaxSize="10240000" 
 cacheObjectMaxSize="512000"  cachingAllowed="true"/>
 <Resource name="jdbc/appjsf"
          auth="Container"
          driverClassName="org.postgresql.Driver"
          url="jdbc:postgresql://localhost:5432/appjsf"
          username="deus"
          password="*****"
          testOnBorrow="true"
          testWhileIdle="true"
          maxIdle="233"
          factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" 
          initialSize="34"
          type="javax.sql.DataSource" 
          maxPoolSize="20" 
          minPoolSize="5" 
          acquireIncrement="1" 
          maxActive="300"
          timeBetweenEvictionRunsMillis="30000"
          removeAbandoned="true"
          removeAbandonedTimeout="60"
          logAbandoned="true"
          validatonQuery="SELECT 1"
          validationInterval="34000"    
          abandonWhenPercentageFull="50"
          closeMethod="close" />

<ResourceLink name="jdbc/appjsf"
              global="jdbc/appjsf"
              type="javax.sql.DataSource" />
</Context>