com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"

java-forums.org | 7 months ago
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    How To Solve "Too Many Connections" error message

    java-forums.org | 7 months ago
    com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
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    How To Solve "Too Many Connections" error message

    java-forums.org | 7 months ago
    com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections"
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    MySQL :: MySQL unreachable under heavy load

    mysql.com | 1 year ago
    com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.

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Root Cause Analysis

  1. com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException

    Data source rejected establishment of connection,  message from server: "Too many connections"

    at sun.reflect.NativeConstructorAccessorImpl.newInstance0()
  2. Java RT
    Constructor.newInstance
    1. sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    2. sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    3. sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    4. java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    4 frames
  3. MySQL jdbc
    JDBC4Connection.<init>
    1. com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
    2. com.mysql.jdbc.Util.getInstance(Util.java:382)
    3. com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1013)
    4. com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
    5. com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
    6. com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1116)
    7. com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2338)
    8. com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2371)
    9. com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2163)
    10. com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794)
    11. com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
    11 frames
  4. Java RT
    Constructor.newInstance
    1. sun.reflect.GeneratedConstructorAccessor6.newInstance(Unknown Source)
    2. sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    3. java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    3 frames
  5. MySQL jdbc
    NonRegisteringDriver.connect
    1. com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
    2. com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:378)
    3. com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)
    3 frames
  6. Java RT
    DriverManager.getConnection
    1. java.sql.DriverManager.getConnection(DriverManager.java:582)
    2. java.sql.DriverManager.getConnection(DriverManager.java:185)
    2 frames
  7. wezzara_project_2
    edit_bosta$1.actionPerformed
    1. wezzara_project_2.bosta_class.get_images_no(bosta_class.java:195)
    2. wezzara_project_2.bosta_class.getwared(bosta_class.java:85)
    3. wezzara_project_2.wared_bosta.<init>(wared_bosta.java:45)
    4. wezzara_project_2.edit_bosta.BeditActionPerformed(edit_bosta.java:225)
    5. wezzara_project_2.edit_bosta.access$000(edit_bosta.java:16)
    6. wezzara_project_2.edit_bosta$1.actionPerformed(edit_bosta.java:130)
    6 frames
  8. Java RT
    EventDispatchThread.run
    1. javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
    2. javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
    3. javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
    4. javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
    5. javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
    6. java.awt.Component.processMouseEvent(Component.java:6263)
    7. javax.swing.JComponent.processMouseEvent(JComponent.java:3255)
    8. java.awt.Component.processEvent(Component.java:6028)
    9. java.awt.Container.processEvent(Container.java:2041)
    10. java.awt.Component.dispatchEventImpl(Component.java:4630)
    11. java.awt.Container.dispatchEventImpl(Container.java:2099)
    12. java.awt.Component.dispatchEvent(Component.java:4460)
    13. java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
    14. java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
    15. java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
    16. java.awt.Container.dispatchEventImpl(Container.java:2085)
    17. java.awt.Window.dispatchEventImpl(Window.java:2475)
    18. java.awt.Component.dispatchEvent(Component.java:4460)
    19. java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    20. java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    21. java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    22. java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
    23. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
    24. java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
    25. java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
    25 frames