i got this message when deploy entity bean (cmp) :

org.jboss.deployment.DeploymentException: Error while creating table; - nested throwable: (java.sql.SQLException: Invalid argument value: Too big column length for column 'userId' (max = 255). Use BLOB instead)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCStartCommand.createTable(JDBCStartCommand.java:190)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCStartCommand.execute(JDBCStartCommand.java:84)

my cmp-field not tell about database mapping, like this:

<cmp-field>
<field-name>userId</field-name>
<cmp-field>

i have try to add information about database mapping in jbosscmp-jdbc.xml :

<cmp-field>
<field- name>userId</field-name>
<jdbc-type>VARCHAR</jdbc-type>
<sql-type>VARCHAR(25)</sql-type>
</cmp-field>

but, still not work. i got same deployment exception message.

Please help me to solve this problem...

NOTE: i'm using jboss 3.0.0.