Solution :
Analyze table and index by using these scripts
analyze [table] validate structure cascade; analyze [index] validate structure;
if the analyze had failed drop index or table and recreate them.
November 4, 2010
ORA-00600: internal error code, arguments: [kdsgrp1], [], [], [], [], [], [], []
December 4, 2009
java.lang.LinkageError: Class javax/xml/namespace/QName violates loader constraints: definition mismatch between parent and child loaders
Reason:
QName.class exists in both j2ee.jar and some jar that was added to the project. A definition mismatch occurs when classloader load these QName classes.
Solution:
Remove QName.class file from the jars that you add to the project. (ie. stax-api-1.0.1.jar, xml-apis-1.3.04.jar)
Spring Webservice Soap Request/Response Logging with log4j
Add following lines to log4j.xml
<appender
name="SPRINGLOGFILE"
class="org.apache.log4j.RollingFileAppender">
<param
name="File"
value="logs/spring.log" />
<param
name="Append"
value="true" />
<param
name="MaxFileSize"
value="1MB" />
<param
name="MaxBackupIndex"
value="5" />
<layout class="org.apache.log4j.PatternLayout">
<param
name="ConversionPattern"
value="%d %-5p %c{2} - %m%n" />
</layout>
</appender>
<logger name="org.springframework.ws">
<priority value="DEBUG" />
<appender-ref ref="SPRINGLOGFILE" />
</logger>
May 4, 2009
Javascript Email Validation (Regular Expression)
function isValidEmail(email)
{
var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if(!filter.test(email))
return false;
return true;
}
Using jQuery with RichFaces
RichFaces includes jQuery JavaScript framework. You can use the futures of jQuery directly without defining the component on a page if it is convenient for you. To start using the jQuery feature on the page, include the library into a page with the following code:
<a4j:loadScript src="resource://jquery.js"/>
In order to test jQuery on your page
Add the following to the <body>:
<a href="">Link</a>
Add the following to the page:
<script type="text/javascript">
jQuery(document).ready(function() {
jQuery("a").click(function() {
alert("Hello world!");
});
});
</script>
- Remember to use
jQuery()function instead of$()
then just click the “Link”
WARNING: Unable to find required classes (javax.activation.DataHandler and javax.mail.internet.MimeMultipart). Attachment support is disabled.
Solution:
1. download activation.jar http://java.sun.com/javase/technologies/desktop/javabeans/jaf/downloads/index.html
2. download mail.jar http://java.sun.com/products/javamail/downloads/index.html
3. add these two jar’s to the project
April 30, 2009
Changing port number in JBoss
JBoss Version : 4.2.0.GA
JBoss is running on port number 8080 as default. If you want to change the port number of your JBoss (jBoss 4)
1. Open JBoss Home/server/default/deploy/jboss-web.deployer folder
*if JBoss is running under “minimal” or “all” mode, open JBoss Home/server/mode/deploy/jboss-web.deployer
2. Open server.xml file in this folder
3. Find <Connector port=”8080″ address=… tag
4. Change 8080 port, with any port you want to use
* ie. <Connector port=”8081″ address=…
5. Restart JBoss
Adding users and roles to Tomcat
Apache Tomcat Version : 6.0.18
Open the tomcat-users.xml, located in your Tomcat Home/conf folder.
To add a role :
<role rolename="myRole"/>
To add a user :
<user username="myUsername" password="myPassword" roles="myRole"/>
To asign multiple roles to a user :
<user username="myUsername" password="myPassword" roles="myRole1,myRole2,myRole3"/>
tomcat-users.xml
<?xml version="1.0" encoding="utf-8"?>
<tomcat-users>
<role rolename="manager"/>
<user username="admin" password="admin" roles="manager"/>
</tomcat-users>
PiJava 