Chapter 1. System Requirements
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## Chapter 1. System Requirements

### Thomas Heute

`<theute@jboss.org>`

### Roy Russo

`<roy@jboss.org>`

A list of tested versions or reported as working by users, before reporting a problem please make sure that you are using a compatible version.

If you successfully installed JBoss portal on versions not listed here please let us know so we can add it here.

## 1.1. Minimum System Requirements

- JDK 1.4 or higher (1.4.2 is recommended)
- 512 MB RAM
- 50 MB hard disk space
- 400 MHz CPU

## 1.2. Supported Operating Systems

JBoss Portal is 100% pure Java and therefore interoperable with most operating systems capable of running a Java Virtual Machine (JVM); including Windows, UNIX, and Linux.

## 1.3. JBoss Application Server

JBoss Portal only works with JBoss Application Server.

### Note

Currently we recommend using JBoss AS 4.0.3sp1, or greater. Previous versions of JBoss Application Server are not supported.

## 1.4. Database

JBoss Portal is Database-Agnostic.

### Note

JBoss Portal employs Hibernate as an interface to RDBMS. Most RDBMS supported by Hibernate will work with JBoss Portal.

The following list, outlines known-to-be-working database vendor and version combinations:

- MySQL 4.x.x (along with the connector 3.0.16)
- MySQL 5 ( known issue )
- PostgreSQL 8.x
- HypersonicSQL
- Derby
- Oracle 9 and 10g
- MSSQL

## 1.5. Source building

The source building mechanism works on Windows, Linux, MacOS X and any 'Unix like' operating system.

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