Caused by: java.sql.SQLException: com.mchange.v2.c3p0.PoolBackedDataSource@da70db38 [ connectionPoolDataSource -> com.mchange.v2.c3p0.WrapperConnectionPoolDataSource@b7bfe3cd [ acquireIncrement -> 1, acquireRetryAttempts -> 5, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, debugUnreturnedConnectionStackTraces -> false, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> z8kfsx8iojm7nfzpt7o1|34a1a195, idleConnectionTestPeriod -> 3000, initialPoolSize -> 0, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 100, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 250, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 0, nestedDataSource -> com.mchange.v2.c3p0.DriverManagerDataSource@b7e8402e [ description -> null, driverClass -> null, factoryClassLocation -> null, identityToken -> z8kfsx8iojm7nfzpt7o1|65cc55e, jdbcUrl -> jdbc:mysql://amrsprod:3306/amrs?autoReconnect=true&sessionVariables=storage_engine=InnoDB&useUnicode=true&characterEncoding=UTF-8, properties -> {user=******, password=******, release_mode=after_transaction} ], preferredTestQuery -> null, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false; userOverrides: {} ], dataSourceName -> null, factoryClassLocation -> null, identityToken -> z8kfsx8iojm7nfzpt7o1|5f775831, numHelperThreads -> 3 ] has been closed() -- you can no longer use it.