Computer implemented method, system and computer usable program code for end-to-end transaction tracking of long-running processes such as a Business Process Execution Language (BPEL) process in a data processing system, such as a data processing system implemented in a Service-Oriented Architecture (SOA). A computer implemented method for tracking and correlating transactions in a process in a data processing system includes gathering instance identification data and instance state data regarding a transaction and storing the instance identification data and instance state data in association with transaction data regarding the transaction. Asynchronous event data is collected, and transaction performance information for an asynchronous event within the transaction is calculated using the transaction data. A tracking report of the transaction is then generated using the calculated transaction performance information.