Installation Prerequisites

Prior to installing any WSO2 Carbon based product, it is necessary to have the appropriate prerequisite software installed on your system. Verify that the computer has the supported operating system and development platforms before starting the installation.

System requirements

Memory	~ 2 GB minimum ~ 512 MB heap size. This is generally sufficient to process typical SOAP messages but the requirements vary with larger message sizes and the number of messages processed concurrently.
Disk	~ 1 GB, excluding space allocated for log files and databases.

Environment compatibility

Operating Systems / Databases

All WSO2 Carbon-based products are Java applications that can be run on any platform that is Oracle JDK 7/8 or OpenJDK 8 compliant.
All WSO2 Carbon-based products are generally compatible with most common DBMSs. For more information, see Working with Databases .
It is not recommended to use Apache DS in a production environment due to issues with scalability. Instead, it is recommended to use an LDAP like OpenLDAP for user management.
For environments that WSO2 products are tested with, see Compatibility of WSO2 Products.
If you have difficulty in setting up any WSO2 product in a specific platform or database, please contact us .

Required applications

The following applications are required for running the DSS and its samples or for building from the source code. Mandatory installations are marked with *.

Application	Purpose	Version	Download Links
Java SE Development Kit (JDK)*	To launch the product as each product is a Java application. To build the product from the source distribution (both JDK and Apache Maven are required). To run Apache Ant.	JDK 7 or 8. Important! Some updates of JDK 1.8 (for example, JDK1.8.0_151) are affected by a known issue related to GZIP decoding. Until this issue is fixed, we recommend one of the following approaches: Use either JDK1.8.0_144 or JDK1.8.0_077 updates. We have verified that these versions are not affected by the known issue. Alternatively, you can disable GZIP decoding for your product by following the steps given below. This will ensure that your product is not affected by the known issue. Open the `catalina-server.xml` file from the `<DSS_HOME>/repository/conf/tomcat/` directory. Set the `compression` parameter (under each of the connector configurations) to false as shown below: compression="off" Restart the server. Oracle and IBM JRE 1.7 are also supported when running (not building) WSO2 products.	OpenJDK Oracle JDK
Apache ActiveMQ JMS Provider	To enable the product's JMS transport and try out JMS samples. The ActiveMQ client libraries must be installed in the product's classpath before you can enable the JMS transport.	5.5.0 or later If you use any other JMS provider (e.g., Apache Qpid), install any necessary libraries and/or components.	Apache ActiveMQ
Apache Ant	To compile and run the product samples .	1.7.0 or later	Apache Ant
Git	Download the source code and build the product from the source distribution.		Linux - http://git-scm.com/download/linux Windows - http://git-scm.com/download/win
Apache Maven	To build the product from the source distribution (both JDK and Apache Maven are required). If you are installing by downloading and extracting the binary distribution instead of building from the source code, you do not need to install Maven.	3.0.*	Apache Maven
Web Browser	Required by all WSO2 products to access each product's Management Console . The Web Browser must be JavaScript enabled to take full advantage of the Management console. NOTE: On Windows Server 2003, you must not go below the medium security level in Internet Explorer 6.x.

You are now ready to install. Click one of the following links for instructions: