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Old 03-11-2008, 04:38 AM   #1
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Registered: Mar 2008
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Tomcat: Communication link failure: EOFException

m running tomcat 6.0.13 on a redhat 4.1.1 and I'm seeing this all too often in the catalina.out log:

java.sql.SQLException: Communication link failure:, underlying cause: null
at com.mysql.jdbc.MysqlIO.readFully(
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(
at com.mysql.jdbc.MysqlIO.checkErrorPacket(
at com.mysql.jdbc.MysqlIO.sendCommand(
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(
at com.mysql.jdbc.Connection.execSQL(
at com.mysql.jdbc.PreparedStatement.executeQuery(
at com.uploadtracker.frontend.UPTRADRIVER.getSLAVESTATUS(
at com.uploadtracker.frontend.UPTRADRIVER.getTrack(

I've searched many forums/mail lists and cannot come up with a fix.
Any ideas as to what's causing this? Could it be a dodgy network or mishandling of connections? Would setting "autoReconnect" and/or "autoReconnectForPools" options to true in the connection strings help?
This doesn't actually cause any crashes, but its still a mystery to me.


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