Also be aware that autoReconnect=true only works (according to the mysql
docs) for Connections with autocommit set to true.
If you are using a connection pool make sure it checks the validity of
Connections every so often. This is configurable for DBCP:
http://jakarta.apache.org/commons/dbcp/configuration.html
If you aren't using a pool then implement some sort of heart beat code
as the previous poster suggested.
HTH,
Jon
Lists wrote:
This is an interesting problem. But first try setting
autoReconnect=true in your connections string.
If you continue to experience a timeout.. Check the logs, and see what
specifically is happening. You may be experiencing an exhaustion of
connections not being released properly.
If it is a true timeout and autoReconnect does not solve it... try
writing a heart beat (1/hour) to test if this keeps it up and running.
Be cognizant of connections NOT being returned back to the pool by a
proper close. Which does not mean that you're not closing correctly
from your code, you maybe experiencing a close issue with JDBC. So,
the version of JDBC is certainly another item to check. :-)
Hope that helps!
jes
On Nov 29, 2005, at 2:21, David W. Brown wrote:
Hello TC dev and Gurus, I have a webapp comprised of several Servlets
and JSP pages. The webapp is functioning very well but after a few
hours of no connections or interaction the TC webapp loses its
connection with the MySQL DB. We are using the server.xml defined
JDBC/MySQL security model using the users and user_roles tables DB
structure. The logins work perfectly until a few hours of (like
overnight) in attendance. Even thought the TC Servlet server is still
up and running logins all fail. After restarting TC the login
mechanism works perfectly. Particulars follow. Please advise.
TC Servlet server 5.5.7
MySQL 4.1
OS Windows XP (whistler).
David Brown
IT/Systems
USM-I KBR-Central
APO AE 09316
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