Thursday, September 10, 2015

How to install and Configure Apache Http Server on Cent OS

Here are the steps to install and configure Apache WebServer on Cent OS :
  • Install Apache HTTP Server (By default Cent OS comes with Apache)
    • yum install httpd
  • Set to Chkconfig to start on boot
    • chkconfig --level 235 httpd on
  • Uncomment below line from configuration(/etc/httpd/conf/httpd.conf) file
    • NameVirtualHost *:80
  • Restart Apache Http Server
    • service httpd restart
  • Verify Apache Server
    • Goto your browser and check localhost or localhost.localdomain It will display Apache Test Page



How to install and configure MySQL on Cent OS

Here are the steps to install and configure MySQL on Cent OS :
  • Install MySql Server
    • yum install mysql-server mysql php-mysql
  • Set to Chkconfig to start on boot
    • chkconfig –level 235 mysqld on
  • Start the MySQL service
    • service mysqld start
  • Set the password for all domains
    • myql -u root
    • SET PASSWORD FOR 'root'@'localhost' = PASSWORD('new-password');
    • SET PASSWORD FOR 'root'@'localhost.localdomain' = PASSWORD('new-password');
    • SET PASSWORD FOR 'root'@'127.0.0.1' = PASSWORD('new-password');
  • Exit and verify the MySQL version
    • exit
    • mysql --version
      • mysql Ver 14.14 Distrib 5.1.73, for redhat-linux-gnu (x86_64) using readline 5.1




How to install GIT on CentOS

It is quite easy to install GIT using YUM command line manage utility on CENT OS 6.

Install :

# yum clean all
# yum install git

Verify Subversion : 

# git --version

Thanks..!!!

Monday, August 24, 2015

How to add MySQL component in the Tivoli Directory Intregator (TDI).

To support MySQL database in the TDI, You first need to add mysql driver into the TDI

Here are the steps :
  • Download and copy mysql (mysql-connector-java-5.1.23-bin.jar ) jar to the location "${IBM}\TDI\V7.1\jars\3rdparty\others" where IBM is your installation directory
  • Restart TDI if it's running.
  • Click on Add component under AssemblyLines and choose JDBC connector
  • In JDBC URL,  add “jdbc:mysql://<IP>:<PORT>/<DATABASE_NAME>”.
  • in JDBC Driver, add com.mysql.jdbc.Driver
  • Provider correct Username and Password of your database.
  • Select table Name from select button.
  • Click Finish to connect to the MySQL Database.



Friday, June 26, 2015

org.hibernate.HibernateException: No Session found for current thread

I am working one Spring MVC project in which I have integrated Spring with hibernate and most of the time, I use to get this error message while performing database operation ..

org.hibernate.HibernateException: No Session found for current thread

Reason : This is happening because I have missed declaring the transaction in my Spring Application. sessionFacory needs transaction to work.

Solution :

Define transaction manager in your Spring configuration file. Here is my spring-config.xml file :


<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${db.driverClassName}" />
<property name="jdbcUrl"
value="jdbc:mysql://${db.host}:${db.port}/${db.name}" />
<property name="user" value="${db.username}" />
<property name="password" value="${db.password}" />
</bean>

<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"
depends-on="provDB">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="PACKAGE_NAME" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${db.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>

<bean id="dao" class="DAO_IMPL_CLASS.DaoImpl">
<property name="sessionFactory" ref="sessionFactory" />
</bean>

<tx:annotation-driven transaction-manager="transactionManager" />

<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>

and Add @Transactional annotation on your service function

@Override
@Transactional
public String saveConfiguration(...) {
daoImpl.saveConfiguration(configuration);
return "issue_resolved";
}

I guess, It can be useful to many prople.. Happy Coding..!!!

Friday, May 29, 2015

How to install SVN Client on CENT OS 6

It is quite easy to install SVN Client using YUM command line manage utility on CENT OS 6.

Install :

# yum clean all
# yum install subversion

Verify Subversion

# svn --version

Thanks..!!!

Friday, February 20, 2015

How to generate JavaDoc jar using Maven

The maven-javadoc plugin can be used to generate a javadoc jar file, It uses JDK's javadoc.exe tools to generate javadocs, pack in jar file and deploy along with your project.
To add support of javadoc in your Maven, Just add 'maven-javadoc' plugin into your pom.xml file and specify goal as 'jar'.
Example :
<!-- Generates JAVADOC -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
Run it as mvn:install or mvn:package, It will generate javadoc and package it as a jar file.

Reference:



     

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