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Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 1 post ] 
Author Message
 Post subject: not getting a connection exception right away
PostPosted: Wed May 14, 2008 8:04 pm 
Newbie

Joined: Wed May 14, 2008 7:26 pm
Posts: 1
Hibernate version: 3.2

properties in hibernate.cfg.xml
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.pool_size">1</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.jdbc.use_streams_for_binary">true</property>


Used Db: MySQL 5.0.51a

I'm having trouble while building a session factory from a Configuration object. I set the connection properties hibernate.connection.url, hibernate.connection.username, hibernate.connection.password already in my application and add them to the Configuration object. Im using the default built-in connection manager.

Everything works great if I enter a correct url of a database server. The problem is that when I enter a random url address where there is no database server and call configuration.buildSessionFactory() it doesn't throw any exceptions (with a connection error message) but freezes, like it would try to connect again and again.
After a minute or two I finally get a JDBCConnectionException, heres the full stack trace:
Code:
Last packet sent to the server was 0 ms ago.
org.hibernate.exception.JDBCConnectionException: Cannot open connection
   at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74)
   at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
   at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29)
   at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:426)
   at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
   at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:119)
   at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:57)
   at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1326)
   at data.Controller.startTransaction(Controller.java:130)
   at gui.MainFrame$2.componentHidden(MainFrame.java:229)
   at java.awt.AWTEventMulticaster.componentHidden(Unknown Source)
   at java.awt.Component.processComponentEvent(Unknown Source)
   at java.awt.Component.processEvent(Unknown Source)
   at java.awt.Container.processEvent(Unknown Source)
   at java.awt.Window.processEvent(Unknown Source)
   at java.awt.Component.dispatchEventImpl(Unknown Source)
   at java.awt.Container.dispatchEventImpl(Unknown Source)
   at java.awt.Window.dispatchEventImpl(Unknown Source)
   at java.awt.Component.dispatchEvent(Unknown Source)
   at java.awt.EventQueue.dispatchEvent(Unknown Source)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
   at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
   at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
   at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
   at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Last packet sent to the server was 0 ms ago.
   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
   at java.lang.reflect.Constructor.newInstance(Unknown Source)
   at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
   at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
   at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103)
   at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718)
   at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
   at java.lang.reflect.Constructor.newInstance(Unknown Source)
   at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
   at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302)
   at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
   at java.sql.DriverManager.getConnection(Unknown Source)
   at java.sql.DriverManager.getConnection(Unknown Source)
   at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
   at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423)
   ... 22 more
Caused by: java.net.ConnectException: Connection timed out: connect
   at java.net.PlainSocketImpl.socketConnect(Native Method)
   at java.net.PlainSocketImpl.doConnect(Unknown Source)
   at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
   at java.net.PlainSocketImpl.connect(Unknown Source)
   at java.net.SocksSocketImpl.connect(Unknown Source)
   at java.net.Socket.connect(Unknown Source)
   at java.net.Socket.connect(Unknown Source)
   at java.net.Socket.<init>(Unknown Source)
   at java.net.Socket.<init>(Unknown Source)
   at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:253)
   at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:280)
   at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2026)
   ... 35 more


I would like to get that connection exception much earlier, so I wouldn't have to wait almost 2 minutes to ensure that there is no mysql db running in that location.
Is there any timeout property I could set to get this exception earlier or maybe there are other solutions?


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