Orbeon MySQL connection constantly dropping - orbeon

Question

I'm constantly losing my MySQL connection after a few minutes. I see no errors in the log until I attempt to connect.
I'm happy to post any settings that will help debug, just let me know what you need to see.
context.xml:
<Resource name="jdbc/mysql" auth="Container" type="javax.sql.DataSource"
initialSize="10" maxActive="50" maxIdle="20" maxWait="60000"
driverClassName="com.mysql.jdbc.Driver"
poolPreparedStatements="true"
username="orbeon"
password="pw"
url="jdbc:mysql://localhost:3306/orbeon"/>
my.cnf:
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
skip-external-locking
skip-name-resolve
bind-address = 0.0.0.0
key-buffer = 256M
thread_stack = 256K
thread_cache_size = 8
max_allowed_packet = 16M
max_connections = 200
myisam-recover = BACKUP
wait_timeout = 180
net_read_timeout = 30
net_write_timeout = 30
back_log = 128
table_cache = 128
max_heap_table_size = 32M
lower_case_table_names = 0
query_cache_limit = 1M
query_cache_size = 16M
log_error = /var/log/mysql/error.log
log_slow_queries = /var/log/mysql/slow.log
long-query-time = 5
log-queries-not-using-indexes
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
[isamchk]
key-buffer = 256M
max_allowed_packet = 16M
!includedir /etc/mysql/conf.d/

Answer 1

Try adding the following two attributes to your existing <Resource> for MySQL. With those, the connection pool in Tomcat will check that the connection is still usable after getting it from the pool.
validationQuery="select 1 from dual"
testOnBorrow="true"
So your <Resource> should look something like (of course with the appropriate username, password, and server):
<Resource name="jdbc/mysql" auth="Container" type="javax.sql.DataSource"
initialSize="3" maxActive="10" maxIdle="20" maxWait="30000"
driverClassName="com.mysql.jdbc.Driver"
poolPreparedStatements="true"
validationQuery="select 1 from dual"
testOnBorrow="true"
username="orbeon"
password="orbeon"
url="jdbc:mysql://localhost:3306/orbeon?useUnicode=true&characterEncoding=UTF8"/>

Answer 2

Why do you have your wait_timeout set so low???
http://dev.mysql.com/doc/refman/5.0/en/server-system-variables.html#sysvar_wait_timeout