HTTP Status 500 - javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Cannot open connection

type Exception report

message javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Cannot open connection

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Cannot open connection
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause

javax.faces.el.EvaluationException: javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Cannot open connection
	javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101)
	com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
	javax.faces.component.UICommand.broadcast(UICommand.java:315)
	javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
	javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
	com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
	com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause

javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Cannot open connection
	org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614)
	org.hibernate.ejb.TransactionImpl.begin(TransactionImpl.java:41)
	br.com.arena.dao.PessoaDAO.cadastrar(PessoaDAO.java:21)
	br.com.arena.controller.PessoaBean.cadastrar(PessoaBean.java:15)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	java.lang.reflect.Method.invoke(Unknown Source)
	org.apache.el.parser.AstValue.invoke(AstValue.java:247)
	org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:267)
	com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
	javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
	com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
	javax.faces.component.UICommand.broadcast(UICommand.java:315)
	javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
	javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
	com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
	com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause

org.hibernate.exception.JDBCConnectionException: Cannot open connection
	org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97)
	org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
	org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
	org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
	org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
	org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:142)
	org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:85)
	org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1353)
	org.hibernate.ejb.TransactionImpl.begin(TransactionImpl.java:38)
	br.com.arena.dao.PessoaDAO.cadastrar(PessoaDAO.java:21)
	br.com.arena.controller.PessoaBean.cadastrar(PessoaBean.java:15)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	java.lang.reflect.Method.invoke(Unknown Source)
	org.apache.el.parser.AstValue.invoke(AstValue.java:247)
	org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:267)
	com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
	javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
	com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
	javax.faces.component.UICommand.broadcast(UICommand.java:315)
	javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
	javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
	com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
	com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause

java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost/arena
	java.sql.DriverManager.getConnection(Unknown Source)
	java.sql.DriverManager.getConnection(Unknown Source)
	org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:133)
	org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
	org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
	org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:142)
	org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:85)
	org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1353)
	org.hibernate.ejb.TransactionImpl.begin(TransactionImpl.java:38)
	br.com.arena.dao.PessoaDAO.cadastrar(PessoaDAO.java:21)
	br.com.arena.controller.PessoaBean.cadastrar(PessoaBean.java:15)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	java.lang.reflect.Method.invoke(Unknown Source)
	org.apache.el.parser.AstValue.invoke(AstValue.java:247)
	org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:267)
	com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
	javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
	com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
	javax.faces.component.UICommand.broadcast(UICommand.java:315)
	javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
	javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
	com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
	com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.36 logs.