Several basic problems of WebLogic

web| problem
1, how to give WebLogic the specified size of memory?

In the script that initiates WebLogic (Startservername in the corresponding server directory of the Domian), add

With set mem_args=-xms32m-xmx200m, the minimum memory can be adjusted to 32M, Max 200M

2, how to set the WebLogic hot start Mode (development mode) and product release mode?

You can modify the startup mode of the corresponding server in the admin console for one of the development or product models. or modify the service

Startup file or commenv file, add set Production_mode=true.

3, how to start without entering a username and password?

Modify service startup files to add Wls_user and WLS_PW entries. You can also add in the Boot.properties file

The user name and password that have been encrypted.

4, in the WebLogic Management console for an application domain (or a Web site, domain) for JMS and EJB or

The connection pool and other related information to configure, actually save in what file?

stored in the Config.xml file in this domain, it is the core configuration file for the server.

5, talk about a domain in the WebLogic default directory structure? For example, to put a simple helloworld.jsp

In what directory, but in the browser can be into the http://host: port number//helloword.jsp can see the results of the operation? And for example, what do you do with a javabean that you write?

Domain directory \ Server directory \applications, put the application directory in this directory will be available as an application access

, if the Web application, the application directory needs to meet the requirements of the Web application directory, JSP files can be directly placed in the application directory

, JavaBean needs to be placed in the classes directory of the Web-inf directory of the application directory, and the default should be set for the server

Use will be implemented on the browser without entering the application name.

6. How do I see the EJB that has been published in WebLogic?

You can use the Admin console to view all published EJBS in its deployment

7, how to WebLogic in the SSL configuration and client authentication configuration or say Java (standard) for SSL configuration

SSL is implemented using DEMOIDENTITY.JKS and Demotrust.jks KeyStore in the default installation and requires configuration services

Using enable SSL to configure its ports, you need to obtain private keys and digital certificates from the CA in product mode, creating

Build identity and trust KeyStore, mount the acquired key and digital certificate. You can configure this SSL connection to be one-way

or bi-directional.

8. Which configuration files should be involved in publishing EJB in WebLogic

Different types of EJB-related configuration files are involved in a configuration file that includes

EJB-JAR.XML,WEBLOGIC-EJB-JAR.XMLCMP entity beans typically also require

Weblogic-cmp-rdbms-jar.xml

9, EJB need to directly implement its business interface or home interface, please brief reasons.

Remote interface and home interface do not need to implement directly, their implementation code is generated by the server, program running

The corresponding implementation class is used as an instance of the corresponding interface type.

10, talk about the difference between persistent and non-persisten when developing a message bean in WebLogic

Persistent MDB can guarantee the reliability of message delivery, that is, if there is a problem with the EJB container, the JMS service

The service will still send the message when this MDB is available, and the non-persistent message will be lost.

Abandon.

11. What are some of the common patterns in Java EE that you know or have heard about? and some ideas about design pattern

Session façade pattern: using Sessionbean to access Entitybean

Message façade pattern: implementing an Asynchronous call

EJB command pattern: Use command JavaBeans instead of Sessionbean for lightweight access

Data Transfer Object Factory: Simplifies Entitybean with DTO Factory features

Generic Access: Simplifies Entitybean data-delivery features via the Attibuteaccess interface

Business Interface: Implementing the same interface specification with the remote (local) interface and the Bean class is consistent with business logic

Of

The design of EJB architecture will directly affect system performance, scalability, maintainability, component reusability and

Development efficiency. The more complex the project, the greater the project team, the greater the importance of good design.