Oracle Intelligent Advisor (formerly known as Oracle Policy Automation or its abbreviation OPA) is a suite of software products for modeling and deploying business rules within enterprise applications. Oracle Corporation acquired OPA in December 2008 when it purchased Australian software company RuleBurst Holdings, then trading as Haley. Oracle Intelligent Advisor was designed by RuleBurst to transform legislation and policy documents into executable business rules, particularly for the calculation of benefit entitlements and payment amounts. Although OPA was originally developed for and sold to the public sector, it is widely used in other industries.