We have Orion 1.1.37 with MySQL (mm.mysql driver). MySQL is used as a non-pooled data-source. Everything works fine, but when server is left running for the night, at the morning the DB connection has "crashed": java.sql.SQLException: Lost connection to server during query at org.gjt.mm.mysql.Connection.execSQL(Connection.java) at org.gjt.mm.mysql.Connection.execSQL(Connection.java) at org.gjt.mm.mysql.Statement.execute(Statement.java) at org.gjt.mm.mysql.jdbc2.Statement.execute(Statement.java:114) .... This happens in both Win NT and Linux. Have you had similar problems? Is this a bug in the driver (as it would seem) or in Orion, or a configuration issue? Here's my datasource config: <data-sources> <data-source name="Project data-source" class="com.evermind.sql.ConnectionDataSource" location="jdbc/ProjectDS" inactivity-timeout="0" max-connections="100" pooled-location="jdbc/ProjectPooledDS" xa-location="jdbc/xa/NProjectXADS" ejb-location="jdbc/ProjectEJBDS" url="jdbc:mysql://info02.infomates.net:3306/project" connection-driver="org.gjt.mm.mysql.Driver" /> </data-sources>