Monitoring JavaMelody on /SapphireIMS

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Request	Mean time (ms)	Max time (ms)	Standard deviation	Mean cpu time (ms)	% of system error
WARN [org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory] IJ030027: Destroying connection that is not valid, due to the following exception: com.mysql.jdbc.JDBC4Connection@7879636e	-1	0	0		100.00

Stack-trace
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
      at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
      at com.mysql.jdbc.Util.getInstance(Util.java:386)
      at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1013)
      at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
      at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
      at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
      at com.mysql.jdbc.ConnectionImpl.throwConnectionClosedException(ConnectionImpl.java:1205)
      at com.mysql.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:1197)
      at com.mysql.jdbc.ConnectionImpl.createStatement(ConnectionImpl.java:2483)
      at com.mysql.jdbc.ConnectionImpl.createStatement(ConnectionImpl.java:2465)
      at org.jboss.jca.adapters.jdbc.CheckValidConnectionSQL.isValidConnection(CheckValidConnectionSQL.java:71)
      at org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnectionFactory.isValidConnection(BaseWrapperManagedConnectionFactory.java:1273)
      at org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnectionFactory.getInvalidConnections(BaseWrapperManagedConnectionFactory.java:1086)
      at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:379)
      at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:632)
      at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:604)
      at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:624)
      at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:430)
      at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:789)
      at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:138)
      at sun.reflect.GeneratedMethodAccessor190.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at net.bull.javamelody.JdbcWrapper$3.invoke(JdbcWrapper.java:804)
      at net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:300)
      at com.sun.proxy.$Proxy208.getConnection(Unknown Source)
      at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:64)
      at IMSPackage.connection.getConnection(connection.java:51)
      at com.tecknodreams.emailtorequest.DBConnection.getValueFromQuery(DBConnection.java:354)
      at com.tecknodreams.emailtorequest.EMailToTicket_EWS.ReadServiceDeskMails(EMailToTicket_EWS.java:194)
      at com.tecknodreams.emailtorequest.EMailToTicket_EWS.run(EMailToTicket_EWS.java:168)
      at java.lang.Thread.run(Thread.java:748)