Hibernate version: 3.1.3

Mapping documents:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Jun 16, 2006 3:17:58 PM by Hibernate Tools 3.1.0.beta5 -->
<hibernate-mapping>
<class name="au.edu.nsw.det.csa.eat.uni.datatypes.UniCourse"
table="UNI_COURSE" mutable="false">
<composite-id name="id" class="au.edu.nsw.det.csa.eat.uni.datatypes.UniCourseId">
<key-property name="uniCode" type="string">
<column name="UNI_CODE" length="10" />
</key-property>
<key-property name="courseCode" type="string">
<column name="COURSE_CODE" length="10" />
</key-property>
</composite-id>
<version name="transactionId" type="integer" unsaved-value="null">
<column name="TRANSACTION_ID" precision="8" scale="0"/>
</version>
<many-to-one name="uni" class="au.edu.nsw.det.csa.eat.uni.datatypes.Uni" update="false" insert="false" fetch="select">
<column name="UNI_CODE" not-null="true" />
</many-to-one>
<property name="description" type="string">
<column name="DESCRIPTION" length="60" not-null="true"/>
</property>
<set name="uniUnits" table="UNI_COURSE_UNIT">
<key>
<column name="UNI_CODE"/>
<column name="COURSE_CODE"/>
</key>
<many-to-many unique="true" class="au.edu.nsw.det.csa.eat.uni.datatypes.UniUnit">
<column name="UNI_CODE"/>
<column name="UNIT_CODE"/>
</many-to-many>
</set>
</class>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Jun 16, 2006 3:17:58 PM by Hibernate Tools 3.1.0.beta5 -->
<hibernate-mapping>
<class name="au.edu.nsw.det.csa.eat.uni.datatypes.UniUnit" table="UNI_UNIT">
<composite-id name="id" class="au.edu.nsw.det.csa.eat.uni.datatypes.UniUnitId">
<key-property name="uniCode" type="string">
<column name="UNI_CODE" length="10" />
</key-property>
<key-property name="unitCode" type="string">
<column name="UNIT_CODE" length="10" />
</key-property>
</composite-id>
<version name="transactionId" type="integer" unsaved-value="null">
<column name="TRANSACTION_ID" precision="8" scale="0"/>
</version>
<many-to-one name="uni" class="au.edu.nsw.det.csa.eat.uni.datatypes.Uni" update="false" insert="false" fetch="select">
<column name="UNI_CODE" not-null="true"/>
</many-to-one>
<property name="description" type="string">
<column name="DESCRIPTION" length="40" />
</property>
<property name="weighting" type="big_decimal">
<column name="WEIGHTING" precision="2" scale="1" />
</property>
<set name="assessmentCategories" inverse="true" table="ASSESSMENT_CATEGORY_UNIT">
<key>
<column name="UNI_CODE" not-null="true"/>
<column name="UNIT_CODE" not-null="true"/>
</key>
<many-to-many unique="true" class="au.edu.nsw.det.csa.eat.assessment.datatypes.AssessmentCategory">
<column name="ASSESSMENT_CATEGORY_ID" not-null="true"/>
</many-to-many>
</set>
<join table="UNI_COURSE_UNIT" inverse="true" optional="true">
<key>
<column name="UNI_CODE"/>
<column name="UNIT_CODE"/>
</key>
<many-to-one name="uniCourse" not-null="true" insert="false" update="false">
<column name="UNI_CODE" not-null="true"/>
<column name="COURSE_CODE" not-null="true"/>
</many-to-one>
</join>
</class>
</hibernate-mapping>

Full stack trace of any exception that occurs:
ERROR [hibernate.HibernateUtil] - Error configuring Hibernate SessionFactory specified by resource eat.hibernate.cfg.xml

org.hibernate.MappingException: Repeated column in mapping for collection: au.edu.nsw.det.csa.eat.uni.datatypes.UniCourse.uniUnits column: UNI_CODE

at org.hibernate.mapping.Collection.checkColumnDuplication(Collection.java:290)

at org.hibernate.mapping.Collection.checkColumnDuplication(Collection.java:313)

at org.hibernate.mapping.Collection.validate(Collection.java:270)

at org.hibernate.mapping.Set.validate(Set.java:19)

at org.hibernate.cfg.Configuration.validate(Configuration.java:988)

at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1169)

at au.edu.nsw.det.jet.hibernate.HibernateUtil.buildSessionFactory(HibernateUtil.java:56)

at au.edu.nsw.det.jet.hibernate.servlets.HibernateInitServlet.generateHibernateConfig(HibernateInitServlet.java:217)

at au.edu.nsw.det.jet.hibernate.servlets.HibernateInitServlet.init(HibernateInitServlet.java:148)

at com.evermind.server.http.HttpApplication.loadServlet(HttpApplication.java:2141)

at com.evermind.server.http.HttpApplication.findServlet(HttpApplication.java:4582)

at com.evermind.server.http.HttpApplication.initPreloadServlets(HttpApplication.java:4676)

at com.evermind.server.http.HttpApplication.initDynamic(HttpApplication.java:820)

at com.evermind.server.http.HttpApplication.<init>(HttpApplication.java:542)

at com.evermind.server.Application.getHttpApplication(Application.java:889)

at com.evermind.server.http.HttpServer.getHttpApplication(HttpServer.java:707)

at com.evermind.server.http.HttpSite.getApplication(HttpSite.java:426)

at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:430)

at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:278)

at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:120)

at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)

at java.lang.Thread.run(Thread.java:534)

Name and version of the database you are using: Oracle9i


Is this a bug reported as

http://opensource.atlassian.com/projects/hibernate/browse/HHH-1338