Error when using EJB / persistence

[purdticker]

I'm getting the following exception thrown when I call findByPrimaryKey():
javax.ejb.EJBException: The bean encountered a non-application exception.;
nested exception is: 
        <openjpa-1.0.2-r420667:627158 nonfatal general error>
org.apache.openjpa.persistence.PersistenceException: For input string: "13
02:22:28"

I've been following this tutorial as much as possible, although some things
in my environment are a little different:
http://cwiki.apache.org/GMOxDOC21/myphonebook-very-simple-entity-ejb-example.html

My Code:

Action.java: Entity Bean
package com.accentureebs.ejb.ControlMSchedule;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "CTM_SCH_ACTION")
public class Action {
        private int id;
        private String desc;
        private String updatedLogon;
        private java.sql.Date timeStamp;
        
        public Action() {}
        
        public Action(int id) {
                this.id = id;
        }
        
        /*************************/
        /** GETTERS AND SETTERS **/
        /*************************/
        
        @Id
        @Column(name="SCH_ACTION_ID")
        public int getId() { return id; }
        public void setId (int id) { this.id = id; }
        
        @Column(name="SCH_ACTION_DESC", nullable=false, length=32)
        public String getDesc() { return desc; }
        public void setDesc (String desc) { this.desc = desc; }
        
        @Column(name="UPDT_LOGON", nullable=false, length=9)
        public String getUpdatedLogon() { return updatedLogon; }
        public void setUpdatedLogon(String updatedLogon) { this.updatedLogon =
updatedLogon; }
        
        @Column(name="TIME_STAMP")
        public java.sql.Date getTimeStamp() { return timeStamp; }
        public void setTimeStamp(java.sql.Date timeStamp) { this.timeStamp =
timeStamp; }

}

ActionLocal.java -> Interface
package com.accentureebs.ejb.ControlMSchedule;

public interface ActionLocal {
        public Action findByPrimaryKey(String key);
}

ActionBean.java -> Implementation of interface
package com.accentureebs.ejb.ControlMSchedule;

import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceUnit;

@Stateless
public class ActionBean implements ActionLocal {
        @PersistenceUnit(unitName="CTMSchedulePU")
        protected EntityManagerFactory emf;
        
        public ActionBean() {}
        
        public Action findByPrimaryKey(String key) {
                EntityManager em = emf.createEntityManager();
                
                Action action = (Action)em.find(Action.class, key);
                
                em.close();
                
                return action;
        }
}

openejb-jar.xml:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ejb:openejb-jar
xmlns:conn="http://geronimo.apache.org/xml/ns/j2ee/connector-1.2";
xmlns:dep="http://geronimo.apache.org/xml/ns/deployment-1.2";
xmlns:name="http://geronimo.apache.org/xml/ns/naming-1.2";
xmlns:ejb="http://openejb.apache.org/xml/ns/openejb-jar-2.2";
xmlns:pkgen="http://openejb.apache.org/xml/ns/pkgen-2.1";
xmlns:app="http://geronimo.apache.org/xml/ns/j2ee/application-2.0";
xmlns:sec="http://geronimo.apache.org/xml/ns/security-2.0";
xmlns:web="http://geronimo.apache.org/xml/ns/j2ee/web-2.0.1";
xmlns:pers="http://java.sun.com/xml/ns/persistence";
xmlns:client="http://geronimo.apache.org/xml/ns/j2ee/application-client-2.0";>
    <dep:environment>
        <dep:moduleId>
            <dep:groupId>default</dep:groupId>
            <dep:artifactId>EBSPortalEJB</dep:artifactId>
            <dep:version>1.0</dep:version>
            <dep:type>car</dep:type>
        </dep:moduleId>
    </dep:environment>
</ejb:openejb-jar>

persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence    xmlns="http://java.sun.com/xml/ns/persistence";
                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
version="1.0"
                xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd";>
        <persistence-unit name="CTMSchedulePU">
                <description>Control-M Schedule Persistence Unit</description>
        
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
                <jta-data-source>EBSPool</jta-data-source>
                <non-jta-data-source>EBSPool</non-jta-data-source>
                <class>com.accentureebs.ejb.ControlMSchedule.Action</class>
        </persistence-unit>
</persistence>
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