Foros del Web - Error postgreSQL

Buenas a todos.
Cuando solicito datos a la BBDD me sale con frecuencia el siguiente error:

org.postgresql.util.PSQLException: Un error de E/S ha ocurrido mientras se enviaba al backend.
at org.postgresql.core.v3.QueryExecutorImpl.execute(Q ueryExecutorImpl.java:214)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execut e(AbstractJdbc2Statement.java:430)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execut eWithFlags(AbstractJdbc2Statement.java:346)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execut eQuery(AbstractJdbc2Statement.java:250)
at es.gobile.bd.PoolNoticias.getResultado(PoolNoticia s.java:32)
at es.gobile.server.SrvNoticiasImpl.getResultado(SrvN oticiasImpl.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)Un error de E/S ha ocurrido mientras se enviaba al backend.

at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncode Response(RPC.java:528)
at com.google.gwt.user.server.rpc.RemoteServiceServle t.processCall(RemoteServiceServlet.java:265)
at com.google.gwt.user.server.rpc.RemoteServiceServle t.doPost(RemoteServiceServlet.java:187)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at com.google.gwt.dev.shell.GWTShellServlet.service(G WTShellServlet.java:252)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invo keInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(Co yoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.IOException: Stream closed
at sun.nio.cs.StreamEncoder.ensureOpen(StreamEncoder. java:26)
at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java: 121)
at java.io.OutputStreamWriter.flush(OutputStreamWrite r.java:212)
at org.postgresql.core.PGStream.flush(PGStream.java:4 99)
at org.postgresql.core.v3.QueryExecutorImpl.sendSync( QueryExecutorImpl.java:672)
at org.postgresql.core.v3.QueryExecutorImpl.execute(Q ueryExecutorImpl.java:187)
... 40 more
java.util.MissingResourceException: Can't find bundle for base name es.gobile.util.Syslog, locale es_ES
at java.util.ResourceBundle.throwMissingResourceExcep tion(ResourceBundle.java:1508)
at java.util.ResourceBundle.getBundleImpl(ResourceBun dle.java:1262)
at java.util.ResourceBundle.getBundle(ResourceBundle. java:717)
at es.gobile.util.Syslog.<init>(Syslog.java:23)
at es.gobile.util.Syslog.getInstance(Syslog.java:18)
at com.javaexchange.dbConnectionBroker.DbConnectionBr oker.getInstance(DbConnectionBroker.java:126)
at es.gobile.bd.PoolBean.<init>(PoolBean.java:76)
at es.gobile.bd.PoolBean.<init>(PoolBean.java:44)
at es.gobile.bd.PoolAccesoIdentificado.<init>(PoolAcc esoIdentificado.java:16)
at es.gobile.server.SrvControladorImpl.getAccesoIdent ificado(SrvControladorImpl.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncode Response(RPC.java:528)
at com.google.gwt.user.server.rpc.RemoteServiceServle t.processCall(RemoteServiceServlet.java:265)
at com.google.gwt.user.server.rpc.RemoteServiceServle t.doPost(RemoteServiceServlet.java:187)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at com.google.gwt.dev.shell.GWTShellServlet.service(G WTShellServlet.java:252)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invo keInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(Co yoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException: es.gobile.util.Syslog cannot be cast to ResourceBundle
at java.util.ResourceBundle$Control.newBundle(Resourc eBundle.java:2378)
at java.util.ResourceBundle.loadBundle(ResourceBundle .java:1400)
at java.util.ResourceBundle.findBundle(ResourceBundle .java:1365)
at java.util.ResourceBundle.findBundle(ResourceBundle .java:1294)
at java.util.ResourceBundle.findBundle(ResourceBundle .java:1294)
at java.util.ResourceBundle.getBundleImpl(ResourceBun dle.java:1236)
... 43 more

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¿Cómo se puede solucionar esto?

Gracias de antemano.