IBM Health Checker for z/OS is a tool for managing checks. It monitors check execution and provides support for defining system checks, issuing WTOs, and executing checks at a specified interval. Some checks are shipped with IBM Health Checker for z/OS and Sysplex and others are distributed via PTF. The checks themselves are intended to identify potential problems before they impact your availability or, in worst cases, cause outages. Collectively, they produce output to help you analyze the values defined for this system. This book covers setting up, using, and developing checks for IBM Health Checker for z/OS.