OT/ Tomcat, Hibernate and MYSQL problem

[Marco Mistroni <mm...@waersystems.com>]

Hello,

	First of all, I apologize for the off topic issue..
I know this is not the list, but I tried hibernate forums, and
Searched the web with no solution.. hopefully some of u had the
Same problem and solved it..


I m experiencing problems with Hibernate in tomcat, talking to mysql.

My situation is that I didn't define any connection pools in tomcat, but
left it to Hibernate to handle that...

After leaving the application running for 11 hours, I got following
exception

hi all, 
i have a webapp taht uses Hibernate and MYSQL, running on top of tomcat.

i am letting Hibernate handle the connections to mysql db, since i have
no connection pools defined in tomcat. 
after running the application for nearly 9 hours, when i tried to use my
app to connect to the database i got following exception: 

Caused by: net.sf.hibernate.JDBCException: Could not execute query 
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1476) 
at net.sf.hibernate.impl.QueryImpl.list(QueryImpl.java:45) 
at
com.myapp.hibernate.HibernatePersistenceManager.query(HibernatePersisten
ceManager.java:205) 
... 31 more 
Caused by: java.sql.SQLException: Communication link failure:
java.net.SocketException, underlying cause: Software caused connection
abort: recv failed 

** BEGIN NESTED EXCEPTION ** 

java.net.SocketException 
MESSAGE: Software caused connection abort: recv failed 

STACKTRACE: 

java.net.SocketException: Software caused connection abort: recv failed 



now i have searched the web and found two possible alternatives..
one was to add following problems to hibernate config file..
<property name="connection.autoReconnect">true</property> 
<property name="connection.autoReconnectForPools">true</property> 
<property
name="connection.is-connection-validation-required">true</property> 


but this does not work, as ihave added thos eproperties to hibernate
properties file and i am still getting same exception 


then I tried to add ?autoReconnect=true  to JBDC URL, but that didn't
work either coz I left application running for 11 hours and after that I
got same
exception...

can anyone help me out?

THANX in advance and regards
	marco



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