tomcat5.09+oracle9.02+hibernate2.12.

tomcat/conf/server.xml
----------------------------------------
<Context path="/hibernate" docBase="hibernate" debug="0" reloadable="true" crossContext="true">
<Resource name="jdbc/hibernate" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/hibernate">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:oracle:thin:@localhost:1521:daily</value>
</parameter>
<parameter>
<name>username</name>
<value>dlc</value>
</parameter>
<parameter>
<name>password</name>
<value>love1234</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>10</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>-1</value>
</parameter>
</ResourceParams>
</Context>
-----------------------------------------
tomcat/webapps/hibernate/web-inf/web.xml

<resource-ref>
<description>
Resource reference to a factory for java.sql.Connection
instances that may be used for talking to a particular
database that is configured in the server.xml file.
</description>
<res-ref-name>
jdbc/hibernate
</res-ref-name>
<res-type>
javax.sql.DataSource
</res-type>
<res-auth>
Container
</res-auth>
</resource-ref>

-----------------------------------------------------

F:\Tomcat 5.0\webapps\hibernate\WEB-INF\classes\Course.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping>
<class
name="test.Course"
table="Courses"
dynamic-update="false"
>

<id
name="id"
column="CourseId"
type="string"
unsaved-value="any"
>
<generator class="assigned"/>
</id>

<property
name="name"
type="string"
update="true"
insert="true"
column="Name"
/>
</class>
</hibernate-mapping>


--------------------------------------------------------------
F:\Tomcat 5.0\webapps\hibernate\WEB-INF\classes\hibernate.cfg.xml

<?xml version='1.0' encoding='utf-8'?>

<!DOCTYPE hibernate-configuration
PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>
<session-factory>
<property name="connection.datasource">java:comp/env/jdbc/hibernate</property>
<property name="show_sql">false</property>
<property name="dialect">net.sf.hibernate.dialect.Oracle9Dialect</property>

<!-- Mapping files -->
<mapping resource="Course.hbm.xml"/>


</session-factory>

</hibernate-configuration>

------------------------------------------------------------


######################
### Query Language ###
######################

## define query language constants / function names

hibernate.query.substitutions true 1, false 0, yes 'Y', no 'N'



#################
### Platforms ###
#################

## JNDI Datasource

#hibernate.connection.datasource jdbc/test
#hibernate.connection.username db2
#hibernate.connection.password db2


## HypersonicSQL

#hibernate.dialect net.sf.hibernate.dialect.HSQLDialect
#hibernate.connection.driver_class org.hsqldb.jdbcDriver
#hibernate.connection.username sa
#hibernate.connection.password
#hibernate.connection.url jdbc:hsqldb:hsql://localhost
#hibernate.connection.url jdbc:hsqldb:test
#hibernate.connection.url jdbc:hsqldb:.


## PostgreSQL

#hibernate.dialect net.sf.hibernate.dialect.PostgreSQLDialect
#hibernate.connection.driver_class org.postgresql.Driver
#hibernate.connection.url jdbc:postgresql:template1
#hibernate.connection.username pg
#hibernate.connection.password
#hibernate.query.substitutions yes 'Y', no 'N'


## DB2

#hibernate.dialect net.sf.hibernate.dialect.DB2Dialect
#hibernate.connection.driver_class COM.ibm.db2.jdbc.app.DB2Driver
#hibernate.connection.url jdbc:db2:test
#hibernate.connection.username db2
#hibernate.connection.password db2


## DB2/400

#hibernate.dialect net.sf.hibernate.dialect.DB2400Dialect
#hibernate.connection.username user
#hibernate.connection.password password

## Native driver
#hibernate.connection.driver_class COM.ibm.db2.jdbc.app.DB2Driver
#hibernate.connection.url jdbc:db2://systemname

## Toolbox driver
#hibernate.connection.driver_class com.ibm.as400.access.AS400JDBCDriver
#hibernate.connection.url jdbc:as400://systemname


## MySQL

#hibernate.dialect net.sf.hibernate.dialect.MySQLDialect
#hibernate.connection.driver_class org.gjt.mm.mysql.Driver
#hibernate.connection.driver_class com.mysql.jdbc.Driver
#hibernate.connection.url jdbc:mysql:///test
#hibernate.connection.username root
#hibernate.connection.password


## Oracle

hibernate.dialect net.sf.hibernate.dialect.Oracle9Dialect
hibernate.dialect net.sf.hibernate.dialect.OracleDialect
hibernate.connection.driver_class oracle.jdbc.driver.OracleDriver
hibernate.connection.username dlc
hibernate.connection.password love1234
hibernate.connection.url jdbc:oracle:thin:@localhost:1521:daily


## Sybase

#hibernate.dialect net.sf.hibernate.dialect.SybaseDialect
#hibernate.connection.driver_class com.sybase.jdbc2.jdbc.SybDriver
#hibernate.connection.username sa
#hibernate.connection.password sasasa
#hibernate.connection.rl jdbc:sybase:Tds:co3061835-a:5000/tempdb


## Mckoi SQL

#hibernate.dialect net.sf.hibernate.dialect.MckoiDialect
#hibernate.connection.driver_class com.mckoi.JDBCDriver
#hibernate.connection.url jdbc:mckoi:///
#hibernate.connection.url jdbc:mckoi:local://C:/mckoi1.00/db.conf
#hibernate.connection.username admin
#hibernate.connection.password nimda


## SAP DB

#hibernate.dialect net.sf.hibernate.dialect.SAPDBDialect
#hibernate.connection.driver_class com.sap.dbtech.jdbc.DriverSapDB
#hibernate.connection.url jdbc:sapdb://localhost/TST
#hibernate.connection.username TEST
#hibernate.connection.password TEST
#hibernate.query.substitutions yes 'Y', no 'N'


## MS SQL Server

#hibernate.dialect net.sf.hibernate.dialect.SQLServerDialect
#hibernate.connection.username sa
#hibernate.connection.password sa

## JSQL Driver
#hibernate.connection.driver_class com.jnetdirect.jsql.JSQLDriver
#hibernate.connection.url jdbc:JSQLConnect://1E1/test

## JTURBO Driver
#hibernate.connection.driver_class com.newatlanta.jturbo.driver.Driver
#hibernate.connection.url jdbc:JTurbo://1E1:1433/test

## WebLogic Driver
#hibernate.connection.driver_class weblogic.jdbc.mssqlserver4.Driver
#hibernate.connection.url jdbc:weblogic:mssqlserver4:1E1:1433

## Microsoft Driver (not recommended!)
#hibernate.connection.driver_class com.microsoft.jdbc.sqlserver.SQLServerDriver
#hibernate.connection.url jdbc:microsoft:sqlserver://1E1;DatabaseName=test;SelectMethod=cursor

## jTDS (not supported!)
#hibernate.connection.driver_class net.sourceforge.jtds.jdbc.Driver
#hibernate.connection.url jdbc:jtds:sqlserver://1E1/test;SelectMethod=cursor
#hibernate.jdbc.use_scrollable_resultset false

## Interbase

#hibernate.dialect net.sf.hibernate.dialect.InterbaseDialect
#hibernate.connection.username sysdba
#hibernate.connection.password masterkey

## DO NOT specify hibernate.connection.sqlDialect

## InterClient

#hibernate.connection.driver_class interbase.interclient.Driver
#hibernate.connection.url jdbc:interbase://localhost:3060/C:/firebird/test.gdb

## Pure Java

#hibernate.connection.driver_class org.firebirdsql.jdbc.FBDriver
#hibernate.connection.url jdbc:firebirdsql:localhost/3050:/firebird/test.gdb


## Pointbase

#hibernate.dialect net.sf.hibernate.dialect.PointbaseDialect
#hibernate.connection.driver_class com.pointbase.jdbc.jdbcUniversalDriver
#hibernate.connection.url jdbc:pointbase:embedded:sample
#hibernate.connection.username PBPUBLIC
#hibernate.connection.password PBPUBLIC



#################################
### Hibernate Connection Pool ###
#################################

hibernate.connection.pool_size 1



###########################
### C3P0 Connection Pool###
###########################

#hibernate.c3p0.max_size 2
#hibernate.c3p0.min_size 2
#hibernate.c3p0.timeout 5000
#hibernate.c3p0.max_statements 100
#hibernate.c3p0.idle_test_period 3000
#hibernate.c3p0.acquire_increment 2
##hibernate.c3p0.validate false



###################################
### Apache DBCP Connection Pool ###
###################################

## connection pool

#hibernate.dbcp.maxActive 100
#hibernate.dbcp.whenExhaustedAction 1
#hibernate.dbcp.maxWait 120000
#hibernate.dbcp.maxIdle 10

## prepared statement cache

#hibernate.dbcp.ps.maxActive 100
#hibernate.dbcp.ps.whenExhaustedAction 1
#hibernate.dbcp.ps.maxWait 120000
#hibernate.dbcp.ps.maxIdle 10

## optional query to validate pooled connections:

#hibernate.dbcp.validationQuery select 1 from dual
#hibernate.dbcp.testOnBorrow true
#hibernate.dbcp.testOnReturn false



##############################
### Proxool Connection Pool###
##############################

## Properties for external configuration of Proxool

hibernate.proxool.pool_alias pool1

## Only need one of the following

#hibernate.proxool.existing_pool true
#hibernate.proxool.xml proxool.xml
#hibernate.proxool.properties proxool.properties

## Or, alternatively, all of these
## Standard configuration properties of Proxool

#hibernate.proxool.house-keeping-sleep-time 30000
#hibernate.proxool.house-keeping-test-sql
#hibernate.proxool.maximum-connection-count 4
#hibernate.proxool.maximum-connection-lifetime 4
#hibernate.proxool.simultaneous-build-throttle 2
#hibernate.proxool.maximum-active-time 500
#hibernate.proxool.minimum-connection-count 2
#hibernate.proxool.fatal-sql-exception
#hibernate.proxool.prototype-count
#hibernate.proxool.statistics
#hibernate.proxool.recently-started-threshold
#hibernate.proxool.overload-without-refusal-lifetime



#################################
### Plugin ConnectionProvider ###
#################################

## use a custom ConnectionProvider (if not set, Hibernate will choose a built-in ConnectionProvider using hueristics)

#hibernate.connection.provider_class net.sf.hibernate.connection.DriverManagerConnectionProvider
#hibernate.connection.provider_class net.sf.hibernate.connection.DatasourceConnectionProvider
#hibernate.connection.provider_class net.sf.hibernate.connection.C3P0ConnectionProvider
#hibernate.connection.provider_class net.sf.hibernate.connection.DBCPConnectionProvider
#hibernate.connection.provider_class net.sf.hibernate.connection.ProxoolConnectionProvider



#######################
### Transaction API ###
#######################

## the Transaction API abstracts application code from the underlying JTA or JDBC transactions

#hibernate.transaction.factory_class net.sf.hibernate.transaction.JTATransactionFactory
#hibernate.transaction.factory_class net.sf.hibernate.transaction.JDBCTransactionFactory


## to use JTATransactionFactory, Hibernate must be able to locate the UserTransaction in JNDI
## default is java:comp/UserTransaction
## you do NOT need this setting if you specify hibernate.transaction.manager_lookup_class

#jta.UserTransaction jta/usertransaction
#jta.UserTransaction javax.transaction.UserTransaction
#jta.UserTransaction UserTransaction


## to use JCS caching with JTA, Hibernate must be able to obtain the JTA TransactionManager

#hibernate.transaction.manager_lookup_class net.sf.hibernate.transaction.JBossTransactionManagerLookup
#hibernate.transaction.manager_lookup_class net.sf.hibernate.transaction.WeblogicTransactionManagerLookup
#hibernate.transaction.manager_lookup_class net.sf.hibernate.transaction.WebSphereTransactionManagerLookup
#hibernate.transaction.manager_lookup_class net.sf.hibernate.transaction.OrionTransactionManagerLookup
#hibernate.transaction.manager_lookup_class net.sf.hibernate.transaction.ResinTransactionManagerLookup



##############################
### Miscellaneous Settings ###
##############################

## print all generated SQL to the console

#hibernate.show_sql true


## auto schema export

#hibernate.hbm2ddl.auto create-drop
#hibernate.hbm2ddl.auto create
#hibernate.hbm2ddl.auto update


## specify a JDBC isolation level

#hibernate.connection.isolation 4


## set the JDBC fetch size

#hibernate.jdbc.fetch_size 25


## set the maximum JDBC 2 batch size (a nonzero value enables batching)

hibernate.jdbc.batch_size 0


## enable use of JDBC 2 scrollable ResultSets (specifying a Dialect will cause Hibernate to use a sensible default)

#hibernate.jdbc.use_scrollable_resultset true


## use streams when writing binary types to / from JDBC

hibernate.jdbc.use_streams_for_binary true


## use JDBC 3 PreparedStatement.getGeneratedKeys to get the identifier of an inserted row

#hibernate.jdbc.use_get_generated_keys true


## specify a default schema for unqualified tablenames

#hibernate.default_schema test


## use a custom stylesheet for XML generation (if not specified, hibernate-default.xslt will be used)

#hibernate.xml.output_stylesheet C:/Hibernate/net/sf/hibernate/hibernate-default.xslt


## enable outerjoin fetching (specifying a Dialect will cause Hibernate to use sensible default)

#hibernate.use_outer_join false


## set the maximum depth of the outer join fetch tree

hibernate.max_fetch_depth 1


## enable CGLIB reflection optimizer (enabled by default)

#hibernate.cglib.use_reflection_optimizer false



##########################
### Second-level Cache ###
##########################

## optimize chache for minimal "puts" instead of minimal "gets" (good for clustered cache)

#hibernate.cache.use_minimal_puts true


## enable the query cache

hibernate.cache.use_query_cache true


## choose a cache implementation

#hibernate.cache.provider_class net.sf.ehcache.hibernate.Provider
#hibernate.cache.provider_class net.sf.hibernate.cache.EmptyCacheProvider
hibernate.cache.provider_class net.sf.hibernate.cache.HashtableCacheProvider
#hibernate.cache.provider_class net.sf.hibernate.cache.TreeCacheProvider
#hibernate.cache.provider_class net.sf.hibernate.cache.OSCacheProvider
#hibernate.cache.provider_class net.sf.hibernate.cache.JCSCacheProvider
#hibernate.cache.provider_class net.sf.hibernate.cache.SwarmCacheProvider



############
### JNDI ###
############

## specify a JNDI name for the SessionFactory

#hibernate.session_factory_name hibernate/session_factory


## Hibernate uses JNDI to bind a name to a SessionFactory and to look up the JTA UserTransaction;
## if hibernate.jndi.* are not specified, Hibernate will use the default InitialContext() which
## is the best approach in an application server

#file system
#hibernate.jndi.class com.sun.jndi.fscontext.RefFSContextFactory
#hibernate.jndi.url file:/

#WebSphere
#hibernate.jndi.class com.ibm.websphere.naming.WsnInitialContextFactory
#hibernate.jndi.url iiop://localhost:900/

package test;

import net.sf.hibernate.*;
import net.sf.hibernate.cfg.*;
import java.util.*;
import java.io.IOException;
import java.io.PrintWriter;

public abstract class HibernateBase
{
protected SessionFactory sessionFactory;//会话工厂，用于创建会话
protected Session session;//hibernate会话
protected Transaction transaction; //hiberante事务

public HibernateBase()throws HibernateException
{
this.initHibernate();
}
// 帮助方法
protected void initHibernate()
throws HibernateException {

// 装载配置，构造SessionFactory对象
sessionFactory = new Configuration().configure().buildSessionFactory();
}

/**
*开始一个hibernate事务
*/
protected void beginTransaction()
throws HibernateException {

session = sessionFactory.openSession();
transaction = session.beginTransaction();
}

/**
*结束一个hibernate事务。
*/
protected void endTransaction(boolean commit)
throws HibernateException {

if (commit) {
transaction.commit();
} else {
//如果是只读的操作，不需要commit这个事务。
transaction.rollback();
}
session.close();
}
}
--------------------------------
package test;

import test.*;
import net.sf.hibernate.*;
import net.sf.hibernate.cfg.*;
import java.util.*;


/**
*和course相关的业务逻辑
*/
public class CourseBean extends HibernateBase
{
public CourseBean()throws HibernateException
{
super();
}
/**
*增加一个Course
*/
public void addCourse(Course st)throws HibernateException
{
beginTransaction();
session.save(st);
endTransaction(true);
}

/**
*查询系统中所有的Course，返回的是包含有Course持久对象的Iterator。
*/
public Iterator getAllCourses()throws HibernateException
{
String queryString = "select courses from Course as courses";
beginTransaction();
Query query = session.createQuery(queryString);
Iterator it= query.iterate();
return it;
}

/**
*删除给定ID的course
*/
public void deleteCourse(String id)throws HibernateException
{
beginTransaction();
Course course=(Course)session.load(Course.class,id);
session.delete(course);
endTransaction(true);
}

/**
*按course的名字进行模糊查找，返回的是包含有Course持久对象的Iterator。
*/
public Iterator getSomeCourse(String name)throws HibernateException
{
String queryString = "select c from Course as c where c.name like :name" ;
beginTransaction();
Query query = session.createQuery(queryString);
query.setString("name", "%"+name+"%");
Iterator it= query.iterate();
return it;
}
}
---------------------------------

package test;

import java.util.Set;

/**
*在hibernate中代表了Course表的类。
*/
public class Course
{
/**每个属性和表的一个字段对应**/
private String id;
private String name;

/**students表示course中的学生，在后面才会用到，暂时不管**/
private Set students;

/**属性的访问方法**/
public void setId(String string) {
id = string;
}

public String getId() {
return id;
}

public void setName(String name)
{
this.name=name;
}
public String getName()
{
return this.name;
}
public void setStudents(Set stud)
{
this.students=stud;
}
public Set getStudents()
{
return this.students;
}
}
-----------------------------------------
<%@ page import="java.sql.*,java.util.*,test.*" errorPage="error.jsp"%>



<html><body><center>
<%

Course course=new Course();
CourseBean courseBusiness=new CourseBean();

try
{
if(course.getId().equals(null)||course.getId().equals(""));
else courseBusiness.addCourse(course);
%>
成功添加了Course：<br>
name：<%=course.getName()%>
Id:<%=course.getId()%>
<%
}
catch(Exception e)
{
}
%>

<hr>
<br>::增加一个course::<br>
<form action="course.jsp" method="get" name="add">
id:<input type=text name="id"><br>
name:<input type=text name="name"><br>
<input type=submit value="submit"><br>
</form>
<hr>
::按名字模糊查找::<br>
<form action="queryCourse.jsp" method="get" name="queryByName">
name:<input type=text name="name"><br>
<input type=submit value="query"><br>
</form>
<hr>
::删除一个Course::<br>
<form action="deleteCourse.jsp" method="get" name="queryByName">
id:<input type=text name="id"><br>
<input type=submit value="delete"><br>
</form>
<hr>
<a href=viewAll.jsp>::查看所有Course::<a>
</center>
</body>
</html>

Hard to offer help given the style of your post. I suggest you read this, then ask again..

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