Exception resolution Com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:Communications link failure

21:37:08,815 DEBUG Basicresourcepool:1831-an exception occurred while acquiring a poolable resource. Would retry.
Com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:Communications link Failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has no received any packets from the server.
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:526)
At Com.mysql.jdbc.Util.handleNewInstance (util.java:408)
At Com.mysql.jdbc.SQLError.createCommunicationsException (sqlerror.java:1137)
At Com.mysql.jdbc.mysqlio.<init> (mysqlio.java:355)
At Com.mysql.jdbc.ConnectionImpl.coreConnect (connectionimpl.java:2490)
At Com.mysql.jdbc.ConnectionImpl.connectOneTryOnly (connectionimpl.java:2527)
At Com.mysql.jdbc.ConnectionImpl.createNewIO (connectionimpl.java:2309)
At Com.mysql.jdbc.connectionimpl.<init> (connectionimpl.java:834)
At Com.mysql.jdbc.jdbc4connection.<init> (jdbc4connection.java:46)
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:526)
At Com.mysql.jdbc.Util.handleNewInstance (util.java:408)
At Com.mysql.jdbc.ConnectionImpl.getInstance (connectionimpl.java:419)
At Com.mysql.jdbc.NonRegisteringDriver.connect (nonregisteringdriver.java:344)
At Com.mchange.v2.c3p0.DriverManagerDataSource.getConnection (drivermanagerdatasource.java:134)
At Com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection (Wrapperconnectionpooldatasource.java : 182)
At Com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection (Wrapperconnectionpooldatasource.java : 171)
At Com.mchange.v2.c3p0.impl.c3p0pooledconnectionpool$1pooledconnectionresourcepoolmanager.acquireresource ( c3p0pooledconnectionpool.java:137)
At Com.mchange.v2.resourcepool.BasicResourcePool.doAcquire (basicresourcepool.java:1014)
At com.mchange.v2.resourcepool.basicresourcepool.access$800 (basicresourcepool.java:32)
At Com.mchange.v2.resourcepool.basicresourcepool$acquiretask.run (basicresourcepool.java:1810)
At Com.mchange.v2.async.threadpoolasynchronousrunner$poolthread.run (threadpoolasynchronousrunner.java:547)
caused By:java.net.ConnectException:Connection refused:connect
At Java.net.DualStackPlainSocketImpl.connect0 (Native Method)
At Java.net.DualStackPlainSocketImpl.socketConnect (dualstackplainsocketimpl.java:79)
At Java.net.AbstractPlainSocketImpl.doConnect (abstractplainsocketimpl.java:339)
At Java.net.AbstractPlainSocketImpl.connectToAddress (abstractplainsocketimpl.java:200)
At Java.net.AbstractPlainSocketImpl.connect (abstractplainsocketimpl.java:182)
At Java.net.PlainSocketImpl.connect (plainsocketimpl.java:172)
At Java.net.SocksSocketImpl.connect (sockssocketimpl.java:392)
At Java.net.Socket.connect (socket.java:579)
At Java.net.Socket.connect (socket.java:528)
At Java.net.socket.<init> (socket.java:425)
At Java.net.socket.<init> (socket.java:241)
At Com.mysql.jdbc.StandardSocketFactory.connect (standardsocketfactory.java:258)
At Com.mysql.jdbc.mysqlio.<init> (mysqlio.java:305)
... More
21:37:08,815 DEBUG Basicresourcepool:1831-an exception occurred while acquiring a poolable resource. Would retry.
Com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:Communications link Failure
******************************************************************************

The service didn't start. You play your paralyzed database

Exception resolution Com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:Communications link failure