com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

openlca.org | 3 months ago
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    PermissionsEx Groups ERROR! HELP!

    GitHub | 3 years ago | cheddarjac
    com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  2. 0

    Help!

    GitHub | 4 years ago | CraftyMcloving
    com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link fai lure The last packet sent successfully to the server was 0 milliseconds ago. The driv er has not received any packets from the server.
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    エミュ鯖構築方法+質問スレ - 1315916521 - メイプルエミュ鯖交流所

    shitaraba.net | 2 years ago
    com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link fai lure Last packet sent to the server was 0 ms ago.
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  5. 0

    MySQL communication link failure

    Stack Overflow | 2 years ago
    com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
  6. 0

    Failed to connect to MySQL database

    Stack Overflow | 2 years ago
    com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 1 432 637 479 787 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago. Failed to connect to MySQL database

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Root Cause Analysis

  1. java.net.ConnectException

    Connection refused: connect

    at java.net.DualStackPlainSocketImpl.connect0()
  2. Java RT
    Socket.<init>
    1. java.net.DualStackPlainSocketImpl.connect0(Native Method)
    2. java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
    3. java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    4. java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    5. java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    6. java.net.PlainSocketImpl.connect(Unknown Source)
    7. java.net.SocksSocketImpl.connect(Unknown Source)
    8. java.net.Socket.connect(Unknown Source)
    9. java.net.Socket.connect(Unknown Source)
    10. java.net.Socket.<init>(Unknown Source)
    11. java.net.Socket.<init>(Unknown Source)
    11 frames
  3. MySQL jdbc
    JDBC4Connection.<init>
    1. com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259)
    2. com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:305)
    3. com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2461)
    4. com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2498)
    5. com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2283)
    6. com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:822)
    7. com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
    7 frames
  4. Java RT
    Constructor.newInstance
    1. sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    2. sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    3. sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    4. java.lang.reflect.Constructor.newInstance(Unknown Source)
    4 frames
  5. MySQL jdbc
    NonRegisteringDriver.connect
    1. com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
    2. com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:404)
    3. com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317)
    3 frames
  6. Java RT
    DriverManager.getConnection
    1. java.sql.DriverManager.getConnection(Unknown Source)
    2. java.sql.DriverManager.getConnection(Unknown Source)
    2 frames
  7. org.openlca.core
    WrappedUIJob$1.run
    1. org.openlca.core.database.ConnectionData.createServerConnection(Unknown Source)
    2. org.openlca.core.database.DescriptorFetch.doFetch(Unknown Source)
    3. org.openlca.core.database.MySQLServer.getDatabaseDescriptors(Unknown Source)
    4. org.openlca.core.application.db.ConnectionJob.run(Unknown Source)
    5. org.openlca.core.application.WrappedUIJob$1.run(Unknown Source)
    5 frames
  8. RWT
    BusyIndicator.showWhile
    1. org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    1 frame
  9. org.openlca.core
    WrappedUIJob.runInUIThread
    1. org.openlca.core.application.WrappedUIJob.runInUIThread(Unknown Source)
    1 frame
  10. Workbench
    UIJob$1.run
    1. org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95)
    1 frame
  11. RWT
    Display.readAndDispatch
    1. org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    2. org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    3. org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
    4. org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
    4 frames
  12. Eclipse UI
    Workbench$7.run
    1. org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
    2. org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
    3. org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
    4. org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
    4 frames
  13. Databinding
    Realm.runWithDefault
    1. org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    1 frame
  14. Eclipse UI
    Workbench.createAndRunWorkbench
    1. org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
    1 frame
  15. Eclipse UI
    PlatformUI.createAndRunWorkbench
    1. org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    1 frame
  16. org.openlca.core
    Application.start
    1. org.openlca.core.application.plugin.Application.start(Unknown Source)
    1 frame
  17. Equinox Container
    EclipseAppHandle.run
    1. org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    1 frame
  18. Eclipse OSGi
    EclipseStarter.run
    1. org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    2. org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    3. org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
    4. org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
    4 frames
  19. Java RT
    Method.invoke
    1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    2. sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    3. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    4. java.lang.reflect.Method.invoke(Unknown Source)
    4 frames
  20. Equinox
    Main.run
    1. org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
    2. org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
    3. org.eclipse.equinox.launcher.Main.run(Main.java:1438)
    3 frames