I think this is a mysql issue. Two clues as to how you should set things up 1) you need to set autoreconnect to true for MySQL in the url. Please see http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html#Database%20Connection%20Pool%20(DBCP)%20Configurations and look at the MySQL example, specifically, <parameter> <name>url</name>
<value>jdbc:mysql://localhost:3306/javatest?autoReconnect=true</value>
</parameter>2) Look at this and see if this is your issue: http://raibledesigns.com/page/rd/20030821 and look at the comments on the MySQL issue Thanks, Steve
Dave Tilley wrote:
Ok, I am trying to get DBCP connection pooling working reliably (and not dropping connections)...so far i am not having much success. After a period of several hours of non-use, Hibernate will generate the familiar ioExcpetion when the connections are timed out.
With that in mind, can someone give me a definitive list of DBCP params that are required to be set to get this working, along with some reasonable values???
Right now, i'm using:
"hibernate.dbcp.maxActive" "hibernate.dbcp.maxIdle" "hibernate.dbcp.maxWait" "hibernate.dbcp.testOnBorrow" -> true "hibernate.dbcp.testOnReturn" -> true "hibernate.dbcp.validationQuery"
Do i need to set any others???? Are there any other tricks to getting DBCP working with Hibernate that i need to know?
I have tried using C3P0 and also fooled around with this autoreconnect=true URL, but i have given up on both of these options and would like to get DBCP configured "the right way".
I would *really* appreciate some guidance with this -- i will be happy to summarize what i learn and submit it for a FAQ or something if that will help so others will have this well-documented online somewhere.
Many thanks,
-dave
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