Galera,
Estou usando JDBC na minha aplicação. Estou usando C3PO para controlar as minhas conexoes, mas nao estya adiantando, esta dando o seguinte erro:
** BEGIN NESTED EXCEPTION **
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException
MESSAGE: Communications link failure
Last packet sent to the server was 945211 ms ago.
STACKTRACE:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
Last packet sent to the server was 945211 ms ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3246)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1917)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2536)
at com.mysql.jdbc.ConnectionImpl.unsetMaxRows(ConnectionImpl.java:5349)
at com.mysql.jdbc.StatementImpl.realClose(StatementImpl.java:2258)
at com.mysql.jdbc.ConnectionImpl.closeAllOpenStatements(ConnectionImpl.java:1472)
at com.mysql.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:4254)
at com.mysql.jdbc.ConnectionImpl.cleanup(ConnectionImpl.java:1248)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2569)
at com.mysql.jdbc.StatementImpl.executeSimpleNonQuery(StatementImpl.java:1463)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1365)
at com.mchange.v2.c3p0.impl.NewProxyStatement.executeQuery(NewProxyStatement.java:35)
at br.com.ces.frotaweb.dao.DaoPrincipal.realizarPesquisas(DaoPrincipal.java:266)
at br.com.ces.frotaweb.dao.DaoPrincipal.realizarPesquisa(DaoPrincipal.java:249)
at br.com.ces.frotaweb.dao.UsuarioDao.logarUsuario(UsuarioDao.java:58)
at br.com.ces.frotaweb.server.FrotaWebServiceImpl.logarUsuario(FrotaWebServiceImpl.java:56)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:569)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:317)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:204)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:182)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:311)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
Caused by: java.net.SocketException: Broken pipe
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3227)
... 43 more
** END NESTED EXCEPTION **
Meu codigo C3PO
package br.com.ces.frotaweb.banco;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import com.mchange.v2.c3p0.ComboPooledDataSource;
import br.com.ces.frotaweb.constantes.ConstanteBanco;
import br.com.ces.frotaweb.exception.FrotaWebException;
import br.com.ces.frotaweb.logger.WebFrotaLogger;
public class ConexaoBanco {
private static Connection conexaoPrincipal = null;
public ConexaoBanco() throws FrotaWebException {
}
public synchronized static Connection getConexaoServidorFrota()
throws FrotaWebException {
if (conexaoPrincipal == null) {
conexaoPrincipal = iniciarConexaoPrincipal();
}
if (conexaoPrincipal != null) {
try {
if (conexaoPrincipal.isClosed()) {
conexaoPrincipal = iniciarConexaoPrincipal();
}
} catch (Exception e) {
throw new FrotaWebException(e);
}
}
return conexaoPrincipal;
}
private synchronized static Connection iniciarConexaoPrincipal()
throws FrotaWebException {
Connection connection = null;
try {
ComboPooledDataSource cpds = new ComboPooledDataSource();
cpds.setDriverClass(ConstanteBanco.DRIVER_CONEXAO);
cpds.setJdbcUrl(ConstanteBanco.URL_DE_CONEXAO);
cpds.setUser(ConstanteBanco.NOME_USUARIO);
cpds.setPassword(ConstanteBanco.SENHA_USUARIO);
cpds.setMaxPoolSize(100);
cpds.setMinPoolSize(10);
cpds.setAcquireIncrement(1);
cpds.setIdleConnectionTestPeriod(300);
cpds.setMaxStatements(20);
//cpds.setCheckoutTimeout(100);
connection = cpds.getConnection();
} catch (Exception e) {
throw new FrotaWebException(e);
}
return connection;
}
public synchronized static void close(ResultSet o) {
try {
if (o != null) {
o.close();
}
} catch (Exception e) {
WebFrotaLogger.logError("Erro", e);
}
}
public synchronized static void close(Statement o) {
try {
if (o != null) {
o.close();
}
} catch (Exception e) {
WebFrotaLogger.logError("Erro", e);
}
}
public synchronized static void close(Connection o) {
try {
if (o != null) {
o.close();
}
} catch (Exception e) {
WebFrotaLogger.logError("Erro", e);
}
}
}
Não sei mais o que fazer. Passa um tempo não consigo mais logar no sistema. Estou usando GWT + Tomcat
Att