PermGen Space eclipse

One of the reason is due to changes in "Java 6u21 distribution"

The change was done in "java.dll" to replace "Sun MicroSystems" to "Oracle Corporation"

(Source : http://www.infoq.com/news/2010/07/eclipse-java-6u21)

Solutions :

1, Degrade to java 6u20 version

2, modify PermGen Space by starting eclipse with "-vmargs -XX:PermSize=64M -XX:MaxPermSize=128M" as options

Ex: eclipse -vmargs -XX:PermSize=64M -XX:MaxPermSize=128M

(Source : http://wiki.eclipse.org/FAQ_How_do_I_increase_the_permgen_size_available_to_Eclipse%3F)

Postgresql ReStore Command

1, In Windows XP, Go to “All Programs” --> “Postgresql” --> “psql”

2, Accept default settings and you will get prompt like “postgres-#”

3, Postgresql has its own utility for Restore called “psql”.

The most common options used are :

1, -d --> database name

2, -U --> user of the database(default is postgres)

3, -f --> backup (*.dmp) file

Syntax : psql [options]

Ex: To restore “archive1.dmp” into a database “mydatabase”,

Run the commands below .

A, create database mydatabase

B,psql –d mydatabase –U postgres –f “E:\archive1.dmp”

Postgresql BackUp Command

1, In Windows XP, Go to Run , type cmd to open Command Prompt

2, Go to the Bin directory inside the Postgresql Installation directory

For EX : E:\workdir\Postgresql\bin

3, Postgresql has its own utility for BackUp called “pg_dump”.

The most common options used are :

1, -h à localhost (hostname)

2, -p à port (default is 5432)

3, -U à user of the database(default is postgres)

4, -f à output backup file name with location

Syntax : pg_dump [options] [databasename]

Ex: To backup “mydatabase” into a file “archive1.dmp” in location “E:\” ,

Use pg_dump -h localhost -p 5432 -U postgres –f “E:\archive1.dmp” mydatabase

Configuring JBoss server in Eclipse

1.Open eclipse -->select server windows --> right click -->New Server
2.Select Jboss As 5.1 under Jboss community in New server popup window-->click next
3.Configure the Home Dirctory as E:\BonAppetit_Product\jboss-5.1.0.GA
4.select server as default-->Click Finish

Steps to Create and Deploy a Prototype Application

Lets see how to do Rapid Application Development from existing database using Seam - Gen tool provided by seam

1, open command prompt and go to the location where seam is extracted

ex : D:\BonAppetit_Product\jboss-seam-2.2.0.GA

2, if you get problem :The JAVA_HOME environment variable should point to a JDK, not a JRE

solution : right-click "My computer", Properties ->Advanced Tab -> Environmental Variables,

and click "New" button to add JAVA_HOME environmental variable .

Provide following values:

a, variable name : JAVA_HOME

b, variable value : (for ex:) C:\Program Files\Java\jdk1.6.0_21

and click ok and do step-1 again .

3, type "seam setup" command and do as defined below :

[echo] Welcome to seam-gen :-)

[input] Enter your Java project workspace (the directory that contains

your Seam projects) [C:/Projects] [C:/Projects]

D:\BonAppetit_Product\Eclipse\Workspace_BonAppetit_Product

[input] Enter your JBoss home directory [C:/Program Files/jboss-4.2.2.GA]

[C:/Program Files/jboss-4.2.2.GA]

D:\BonAppetit_Product\jboss-5.1.0.GA

[input] Enter the project name [myproject] [myproject]

BonPro

[echo] Accepted project name as: BonPro

[input] Do you want to use ICEfaces instead of RichFaces [n] (y, [n])

n

[input] Select a RichFaces skin [blueSky] ([blueSky],

classic, ruby, wine, deepMarine, emeraldTown, japanCherry, DEFAULT)

emeraldTown

[input] Is this project deployed as an EAR (with EJB

components) or a WAR (with no EJB support) [ear] ([ear], war)

ear

[input] Enter the Base package name for your Java Classes

[com.mydomain.Bonpro] [com.mydomain.Bonpro]

com.Bonpro

[input] Enter the Java package name for your session

beans [com.Bonpro.action] [com.Bonpro.action]

com.Bonpro.action

[input] Enter the Java package name for your entity beans

[com.Bonpro.model] [com.Bonpro.model]

com.Bonpro.model

[input] Enter the Java package name for your test cases

[com.Bonpro.action.test] [com.Bonpro.action.test]

com.Bonpro.test

[input] What kind of database are you using? [hsql] ([hsql], mysql,

oracle, postgres, mssql, db2, sybase, enterprisedb, h2)

postgres

[input] Enter the Hibernate dialect for your database

[org.hibernate.dialect.PostgreSqlDialect] [org.hibernate.dialect.PostgreSqlDialect]

Hit Enter key (automatically generated one !!!)

[input] Enter the filesystem path to the JDBC driver jar [lib/h2.jar]

D:\BonAppetit_Product\jboss-5.1.0.GA\postgresql-8.4-701.jdbc4.jar

(download jar from : http://jdbc.postgresql.org/download.html )

[input] Enter JDBC driver class for your database [org.h2.Driver]

[org.postgresql.Driver]

Hit Enter key (automatically generated one !!!)

[input] Enter the JDBC URL for your database [jdbc:postgresql:.] [jdbc:postgresql:.]

jdbc:postgresql:sample

(format : jdbc:postgreql:database name)

[input] Enter database username [sa] [sa]

postgres

[input] Enter database password [] []

postgres

[input] Enter the database schema name (it's OK to leave it blank) [] []

Hit Enter key (automatically generated one !!!)

[input] Enter the database catalog name (it's OK to leave it blank) [] []

Hit Enter key (automatically generated one !!!)

[input] Are you working with tables that already exist in the database?

[n] (y, [n])

y

[input] Do you want to drop and re-create the database tables and data in

import.sql each time you deploy? [n] (y, [n])

n

[propertyfile] Creating new property file:

D:\BonAppetit_Product\jboss-seam-2.2.0.GA/seam-gen/build.properties

[echo] Installing JDBC driver jar to JBoss server

[copy] Copying 1 file to

D:\BonAppetit_Product\jboss-5.1.0.GA\server\default\lib

[echo] Type 'seam create-project' to create the new project

BUILD SUCCESSFUL

Now, you had configured settings for the project. To create project , go to next step .

4, Now type 'seam create-project' and it will create a new project for you in the workspace location provided by you in the above step

5, Now open eclipse -> New -> General - > Existing Projects into WorkSpace -> Select root Directory (as given by you in step - 3) -> Finish

6, Once imported, the project will automatically build and will get deployed in the JBoss server.

7. Now start the JBoss server and browse following URL :

(for ex :) http://localhost:8080/BonPro(Project name provided by you in step-3)

(format : http://localhost:8080/project-name)

Now we have created a sample prototype application

using seam-gen from an existing database !!!

Configuring JBoss Tools in Eclipse

1, Go the website : http://labs.jboss.com/tools/download.html

2, Choose latest stable release under update sites and copy the link:

for ex: http://download.jboss.org/jbosstools/updates/stable/galileo/

3, open eclipse -> Help -> Install New Software -> Add ..

4, provide following information in the "Add site" window came now .

a, Name : Jboss Tools (any name as you wish)

b, Location : http://download.jboss.org/jbosstools/updates/stable/galileo/ (url copied in step 2)

5, Choose "All JBoss Tools" and Click "Next" -> "I accept the terms and conditions" -> Finish

Now JBoss Tools are getting Configured into the Eclipse IDE !!!