are these errors related? What's the best fix

Hi Guys,

Once again, I rely on more sophisticated developers than I am to solve my problems. I am running 2.2.2 on a linux box, and my clients are either locking up, or getting connection errors - I have changed the ping Delay in the server, which seemed to help, but looking at the server error logs - I get these errors. I only use ASA for the repository, and use mysql for the database that drives the application.

2005-11-23 08:05 : Loading - Done

2005-11-23 08:05 : com.sybase.jdbc2.jdbc.SybSQLException: ASA Error -195: Column ‘client_id’ in table ‘servoy_client_stats’ cannot be NULL

2005-11-29 14:39 : select info.id_Info from info order by info.grad_date desc, info.semester

2005-11-29 14:39 : java.sql.SQLException: Communication link failure: java.io.EOFException, underlying cause: null

** BEGIN NESTED EXCEPTION **

java.io.EOFException

STACKTRACE:

java.io.EOFException
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1394)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:1538)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1929)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1167)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1278)
at com.mysql.jdbc.MysqlIO.sqlQuery(MysqlIO.java:1224)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2248)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2208)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2189)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1572)
at sun.reflect.GeneratedMethodAccessor26.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.servoy.j2db.persistence.datasource.p.invoke(Unknown Source)
at $Proxy1.executeQuery(Unknown Source)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:179)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:179)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:179)
at com.servoy.j2db.dataprocessing.SQLEngine.a(Unknown Source)
at com.servoy.j2db.dataprocessing.SQLEngine.performQuery(Unknown Source)
at sun.reflect.GeneratedMethodAccessor82.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:534)

** END NESTED EXCEPTION **

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:1713)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1929)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1167)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1278)
at com.mysql.jdbc.MysqlIO.sqlQuery(MysqlIO.java:1224)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2248)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2208)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2189)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1572)
at sun.reflect.GeneratedMethodAccessor26.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.servoy.j2db.persistence.datasource.p.invoke(Unknown Source)
at $Proxy1.executeQuery(Unknown Source)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:179)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:179)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:179)
at com.servoy.j2db.dataprocessing.SQLEngine.a(Unknown Source)
at com.servoy.j2db.dataprocessing.SQLEngine.performQuery(Unknown Source)
at sun.reflect.GeneratedMethodAccessor82.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
at sun.rmi.transport.Transport$1.run(Transport.java:148)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:534)

Thanks for any pointers

Graham