USING IDCAMS UTILITY,
SYSIN DD * 
         ALTER(OLDNAME)
         NEWNAME(NEWNAME)
 /*

1. hibernate is ORM  wich  maps POJO using xml
      file  to  access and create data form hatro database.
       but in jdbc developers has to write code  to map 
     object model data to rdbms  and it access. 

   2. jdbc  using  SQL to access database developer has  to 
      effective way to access the database.but hibernate 
       provides HQL wich powerful and includes all feature
        of SQL and  supports  ploymorphic query.
 3.    Hibernate  data transaction  is fast due to work is 
       perform due  container mean its xml file mostly but 
       JDBC   has slow  transaction.

it is better to create our own scripts as per requirement, 
becauese weblogic itself is having the tools to fetch data .

Use the monitoring tab available in the WL Console or else
you can go for external tools such as LeekHunter

WLS8 supports JMX but it uses weblogic implementation of 
JMX server. It does not supports generalise sun javax API 
which can be used with any JVM. There are some patches 
available which can be used with WLS8 which will enabled 
JMX based monitoring. Once JMX is enable there are many 
monitoring tools available in the market. One can even go 
for custom JMX utilities which can be used for server 
monitoring.

WLST Scripting is best way to monitor all Weblogic 
parameters from console or to automate in a script and 
generate an schedueled emails.

admin console&jms

A project is something i.e doveloped based on the clients 
requirements and it is used by the specific persons only.
A product is something i.e is doveloped based on the 
company's requirements and it is used by all the people.

client server application consists of two tiers 
client tier and server tier
web server application consists of three tiers
client tier 
server tier
data base tier
in the client server application the client tier consists 
of presentation layer and buisness layer which inturn 
consists of presentation logic and buisness logic, the 
server tier consists of presentation layer and buisness 
layer which inturn consists of presentation logic and 
buisness logic 
in the web server application the client tier consists of 
presentation layer and buisness layer which inturn consists 
of presentation logic and buisness logic,the server tier 
consists of presentation layer and buisness layer which 
inturn consists of presentation logic and buisness logic 
and the database tier consists of presentation layer and 
buisness layer which inturn consists of buisness logic and 
buisness logic

Project: Project is some thing i.e. Developed based on 
specific client requirements , it is used for only that 
customer.

Product: Product is some thing i.e. Developed based on 
organization level requirements , it is used for multiple 
customers.

product means requrimentes are defined by the company 
itself.

project means requrimentes are came from the 
client.application is developed based on customer or client 
requrimntes.

The best example for product and the project is ecards
every ecard is a product.we select that product and
customize the things like background,message ,header,footer
etc. the customized product is nothing but project is sent
to particular person.so that project is used by the selected
persons only, where as product like ecards is used by the
every person.

i think u can understand with this answer.

Weblogic's implementationof the RMI specification uses a
proprietary wire-protocol known as T3. javasoft's reference
implementation of RMI uses a proprietary protocol callrd
JRMP. weblogic developed T3 because they needed a
scalable,efficient protocol for building enterprise-class
destributed object systems with java.

T3 provides a framework for WebLogic Server messages that 
support for enhancements. These enhancements include 
abbreviations and features, such as object replacement, 
that work in the context of WebLogic Server clusters and 
HTTP and other product tunneling. T3 predates Java Object 
Serialization and RMI, while closely tracking and 
leveraging these specifications. T3 is a superset of Java 
Object. Serialization or RMI; anything you can do in Java 
Object Serialization and RMI can be done over T3. T3 is 
mandated between WebLogic Servers and between programmatic 
clients and a WebLogic Server cluster. HTTP and IIOP are 
optional protocols that can be used to communicate between 
other processes and WebLogic Server. It depends on what you 
want to do. For example, when you want to communicate 
between a browser and WebLogic Server-use HTTP, or an ORB 
and WebLogic Server-IIOP.