Many of the world's mission critical applications run on IMS, the most secure, highest performing, and lowest cost hierarchical database management software for online transaction processing (OLTP). How do customers keep this key z/OS subsystem available and running efficiently at peak performance? This session focuses on real customer problems and associated solutions with managing this critical environment.-Rick Engel-IBM; Tracy Dean-IBM Corporation; Carl Peterson-Army and Air Force Exchange Services; Derek Baessler-Texas Instruments