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Startup c3p0 error
By Guest on 15th April 2019 03:19:48 PM | Syntax: TEXT | Views: 1



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  1. [15/Apr/2019 14:37:56] [admin:admin] INFO - Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 1, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1bqq1hea299y7lc17q34q8|55d9ce32, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1bqq1hea299y7lc17q34q8|55d9ce32, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://localhost:3306/oh, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 300, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 10, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 0, numHelperThreads -> 3, preferredTestQuery -> null, properties -> {password=******, user=******}, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, userOverrides -> {}, usesTraditionalReflectiveProxies -> false ]
  2. [15/Apr/2019 14:38:27] [admin:admin] WARN - com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@665ae0bc -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception:
  3. com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
  4.  
  5. The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  6.         at jdk.internal.reflect.GeneratedConstructorAccessor14.newInstance(Unknown Source)
  7.         at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
  8.         at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
  9.         at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
  10.         at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116)
  11.         at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:343)
  12.         at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2334)
  13.         at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2371)
  14.         at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2163)
  15.         at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794)
  16.         at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
  17.         at jdk.internal.reflect.GeneratedConstructorAccessor11.newInstance(Unknown Source)
  18.         at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
  19.         at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
  20.         at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
  21.         at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:378)
  22.         at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
  23.         at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:146)
  24.         at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:195)
  25.         at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:184)
  26.         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200)
  27.         at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1086)
  28.         at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073)
  29.         at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:44)
  30.         at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1810)
  31.         at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:648)
  32. Caused by: java.net.ConnectException: Connection refused (Connection refused)
  33.         at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
  34.         at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
  35.         at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
  36.         at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
  37.         at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
  38.         at java.base/java.net.Socket.connect(Socket.java:591)
  39.         at java.base/java.net.Socket.connect(Socket.java:540)
  40.         at java.base/java.net.Socket.<init>(Socket.java:436)
  41.         at java.base/java.net.Socket.<init>(Socket.java:246)
  42.         at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:254)
  43.         at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:292)
  44.         ... 20 more



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