OWLIM-Enterprise Fact Sheet

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OWLIM-Enterprise is a high-performance, clustered semantic repository created by Ontotext. OWLIM's web site provides extensive information and references regarding support contacts and mailing lists, documentation and latest performance benchmarks.


The key features of OWLIM-Enterprise can be summarised as follows:

  • Scale-out concurrent query processing allows query throughput to be scaled proportionally with the number of cluster nodes
  • Resilience in the event of hardware/software failure means that the cluster remains full functional in the event of a failure of any node
  • Automated fail-over and load-balancing keeps the cluster fully utilised at all times
  • Dynamic configuration and automatic synchronisation allows nodes to be added or removed at any time
  • Notification mechanism allows clients to react to statements in the update stream for the entire cluster

Interfaces, Standards, Requirements

OWLIM-Enterprise: is controlled using the Java JMX Management Extensions interfaces
Platform: Java JRE version 1.6 or later (both 32-bit and 64-bit versions). If custom rule-sets are used then a Java JDK version 1.6 or later is required
Application Server: Any JEE Compliant servlet container, e.g. Tomcat


OWLIM-Enterprise is available under an RDBMS-like commercial license on a per-server-CPU basis; it is neither free nor open-source. To purchase a license or obtain a copy for evaluation, please, contact OWLIM-info@ontotext.com.

Installation and Usage

OWLIM-Enterprise is distributed as a ZIP archive that contains OWLIM's compiled jar's, all required libraries, configuration files, documentation, sample code and data. Use of the rule-compiler (i.e. custom rule-sets) requires the Java Development Kit (JDK) version 1.6 or later, otherwise a Java Runtime Environment (JRE) version 1.6 or later is required.
The installation section of the user guide provides all the information necessary to set up an OWLIM-Enterprise cluster.


OWLIM-Enterprise uses Sesame as a library, taking advantage of its APIs for storage and querying, as well as the support for a wide variety of query languages (e.g. SPARQL and SeRQL) and RDF syntaxes (e.g. RDF/XML, N3, Turtle). The development of OWLIM-Enterprise is partly supported by SEKT, TAO, TripCom, LarKC, and other FP6 and FP7 European research projects.

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