Discussion :

[Watchwolf]

Bonjour,

J'utilise JDBC pour me connecter � une BdD Mysql en local. La table dans laquelle j'effectue mes requ�tes est surcharg�e par moment et mes requ�tes sont mise en attente (locked).

J'ai un programme en python qui tourne bien, il attends que les requ�tes unlock. J'ai un autre programme en Java qui lui renvoie cette exception. Il doit manquer une reconnexion ou quelque chose comme �a.

Je pr�cise que mes requ�tes sont toujours ex�cut� par Mysql m�me si l'exception a �t� lev�.

Code :

S�lectionner tout - Visualiser dans une fen�tre � part

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Last packet sent to the server was 203 ms ago.
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
	at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
	at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2873)
	at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2763)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3299)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1837)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1961)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2537)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2466)
	at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1383)
	at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.logicalcobwebs.proxool.ProxyStatement.invoke(ProxyStatement.java:100)
	at org.logicalcobwebs.proxool.ProxyStatement.intercept(ProxyStatement.java:57)
	at $java.sql.Wrapper$$EnhancerByProxool$$a4c68fa2.executeQuery(<generated>)
	....
Caused by: java.net.SocketException: Socket closed
	at java.net.SocketInputStream.socketRead0(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:129)
	at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:113)
	at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:160)
	at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:188)
	at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2329)
	at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2774)
	... 19 more
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

Ma configuration JDBC

Code :

S�lectionner tout - Visualiser dans une fen�tre � part

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  <proxool>
    <alias>baseTickets</alias>
    <driver-url>jdbc:mysql://localhost/baseTickets</driver-url>
    <driver-class>com.mysql.jdbc.Driver</driver-class>
    <driver-properties>
      <property name="user" value="hehe"/>
      <property name="password" value="hehe"/>
    </driver-properties>
    <maximum-connection-count>10</maximum-connection-count>
    <house-keeping-test-sql>select CURRENT_DATE</house-keeping-test-sql>
    <autoReconnect>true</autoReconnect>
    <maximum-connection-lifetime>118000000</maximum-connection-lifetime>
  </proxool>

Voila j'ai tout essay�, si vous avez des id�es ca serait vraiment bien

[Watchwolf]

La solution :

maximum-active-time: http://proxool.sourceforge.net/properties.html