Server configuration denies access to data source

[Eric Chaber]

Problem with connection pooling help
maxtive conenction (in server.xml) et to 30 (before was 450) but same problem.
After 15mn of use I get this message:
(using DBCP 1.1 Commons + tomcat 5 + mysql + MSQL/J)

java.sql.SQLException: Server configuration denies access to data source
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:537)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:1585)
at com.mysql.jdbc.Connection.<init>(Connection.java:524)
at com.mysql.jdbc.Driver.connect(Driver.java:359)
at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:82)
at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:300)
at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:816)
at org.apache.commons.dbcp.AbandonedObjectPool.borrowObject(AbandonedObjectPool.java:119)
at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:140)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:518)