This documentation is for WSO2 Complex Event Processor 4.0.0. View documentation for the latest release.
WSO2 Complex Event Processor is succeeded by WSO2 Stream Processor. To view the latest documentation for WSO2 SP, see WSO2 Stream Processor Documentation.

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Operating Systems / Databases

  • All WSO2 Carbon-based products are Java applications that can be run on any platform that is Oracle JDK 1.8.* or OpenJDK compliant.  We do not recommend OpenJDK as we do not support it or test our products with it.
  • All WSO2 Carbon-based products are generally compatible with most common DBMSs. For more information, see  Working with Databases .
  • If you have difficulty in setting up any WSO2 product in a specific platform or database, please contact us .
  • 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.
  • WSO2 CEP does not support SunOS 5.10 and  IBM AIX. For environments that WSO2 products are tested with, see Compatibility of WSO2 Products .


 as we do not support it or test our products with it.




Download Links

Oracle Java SE Development Kit (JDK)*



Do not use JDK1.8.0_151 due to a known issue. This issue is fixed in JDK 1.8.0_162-ea. However, use JDK 1.8.0_144 until the latter mentioned version is released.

  • IBM JDK/JRE 1.7 and 1.8 are supported when running (not building) WSO2 products.We do not recommend


Oracle JDK

GitRequired to check out the source from the Git repository.1.9.0 or later

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.http://maven.apache.orgApache Maven

Web Browser

To access each product's Management Console . The Web Browser must be JavaScript enabled to take full advantage of the Management console.


WSO2 CEP does not support Internet Explorer browser.

  • Firefox 39.0
  • Firefox 40.0.3
  • Chrome 43.0.2357.125
  • Chrome 45.0.2454.93
  • Safari 8.0.7

Apache Storm

To deploy WSO2 CEP in a distributed mode.


If you want to run custom extensions in the CEP distributed deployment with Apache Storm, edit the dependencies in the <CEP_HOME>/samples/utils/storm-dependencies-jar/pom.xml file accordingly, and build only this pom.xml file.

0.9.5 Storm

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