0 Replies Latest reply on Oct 25, 2012 3:29 PM by Lakshmi Narayana Garoju

    JBOSS running into IO exception

    Lakshmi Narayana Garoju Newbie

      Hi, could somebody help me with this problem? JBOSS that I am running sometimes crashes.

      It seems it is losing connection to MySQL. When I observed the thread dump I found below exception.

       

      INFO   | jvm 2    | 2012/10/24 10:49:51 | 10:49:51,383 WARN  [JBossManagedConnectionPool] Unable to fill pool

      INFO   | jvm 2    | 2012/10/24 10:49:51 | org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception:

      INFO   | jvm 2    | 2012/10/24 10:49:51 |

      INFO   | jvm 2    | 2012/10/24 10:49:51 | ** BEGIN NESTED EXCEPTION **

      INFO   | jvm 2    | 2012/10/24 10:49:51 |

      INFO   | jvm 2    | 2012/10/24 10:49:51 | com.mysql.jdbc.CommunicationsException

      INFO   | jvm 2    | 2012/10/24 10:49:51 | MESSAGE: Communications link failure due to underlying exception:

      INFO   | jvm 2    | 2012/10/24 10:49:51 |

      INFO   | jvm 2    | 2012/10/24 10:49:51 | ** BEGIN NESTED EXCEPTION **

      INFO   | jvm 2    | 2012/10/24 10:49:51 |

      INFO   | jvm 2    | 2012/10/24 10:49:51 | java.io.EOFException

      INFO   | jvm 2    | 2012/10/24 10:49:51 | MESSAGE: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.

      INFO   | jvm 2    | 2012/10/24 10:49:51 |

      INFO   | jvm 2    | 2012/10/24 10:49:51 | STACKTRACE:

      INFO   | jvm 2    | 2012/10/24 10:49:51 |

      INFO   | jvm 2    | 2012/10/24 10:49:51 | java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1997)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2411)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2916)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3421)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1247)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.Connection.createNewIO(Connection.java:2748)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.Connection.<init>(Connection.java:1553)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:172)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.createConnectionEventListener(InternalManagedConnectionPool.java:584)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.fillToMin(InternalManagedConnectionPool.java:531)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at org.jboss.resource.connectionmanager.PoolFiller.run(PoolFiller.java:74)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |      at java.lang.Thread.run(Thread.java:619)

      INFO   | jvm 2    | 2012/10/24 10:49:51 |

      INFO   | jvm 2    | 2012/10/24 10:49:51 |

      INFO   | jvm 2    | 2012/10/24 10:49:51 | ** END NESTED EXCEPTION **

       

      Thanks

      Lakshmi Narayana