摘要： Now doing a new project which choose the newest weblogic 12.1.2.0.0 as web container.But found the Derby database also popping out with weblogic start up.below is the solution to enabled Apache Derby Database start or disabled it .- make sure you have the WebLogic samples and the sample DB installed 阅读全文

摘要： Takeaway: When designing a database table structure, it's important to choose an efficient strategy for storing a logical Boolean that you can use in many programming environments. Find out how from this Oracle expert.When designing a database table structure, it's important to choose an eff 阅读全文

摘要： If it is Windows and you are using TortoiseSVN, then right-click on a folder of the working copy, go to Subversion tab, click on Properties. 阅读全文

摘要： eclipse中-->选定项目-->右键-->弹出 Properties for项目名 -->选择server子项-->选择需要的server即可(Always use the following server when running this project) 阅读全文

摘要： Maybe you want to develop in a custom team environment or you usualy work on different machines (that's my case) and don't want to do annoying thinks like constantly sending the files from one PC to the other. What you really need is a code hosting in SVN or CSVto save your work and manage y 阅读全文

摘要： This tutorial will cover a basic scenario where it integrates Spring Security, using database-backed authentication, into an existing Spring web application.Spring Security is a security framework that provides declarative security for your Spring-based applications. Spring Security provides a compr 阅读全文

摘要： What it does:if set to "true", any cached data used by the OSGi framework and eclipse runtime will be wiped clean. This will clean the caches used to store bundle dependency resolution and eclipse extension registry data. Using this option will force eclipse to reinitialize these caches.Ho 阅读全文

摘要： 悲观锁和乐观锁数据的锁定分为两种方法，第一种叫做悲观锁，第二种叫做乐观锁。悲观锁顾名思义，就是对数据的冲突采取一种悲观的态度，也就是说假设数据肯定会冲突，所以在数据开始读取的时候就把数据锁定住乐观锁就是认为数据一般情况下不会造成冲突，所以在数据进行提交更新的时候，才会正式对数据的冲突与否进行检测，如果发现冲突了，则让用户返回错误的信息，让用户决定如何去做。在SqlServer等其余很多数据库中，数据的锁定通常采用页级锁的方式，也就是说对一张表内的数据是一种串行化的更新插入机制，在任何时间同一张表只会插1条数据，别的想插入的数据要等到这一条数据插完以后才能依次插入。带来的后果就是性能的降低，在多 阅读全文

摘要： WebLogic Server StuckThreadMaxTime value is exceeded during configurationIf you are configuring WebLogic Server 9.2 MP2 or 10 using the Configurator and you take longer than 600 seconds to finish the configuration, the following error is returned to the terminal and WebLogic Server domain and server 阅读全文

摘要： 问题页面: JSF 2.0 + Spring + Hibernate Example JSF + Spring + Hibernate ... 阅读全文