The system logger provides a sysplex-wide logging mechanism for VSAM, CICS®, and RRS. An integrated MVS™ function designed to support system and subsystem components in a Parallel Sysplex®, the system logger implements a set of services that enables applications to write, browse, and delete log data. The system logger exploits coupling facility technology.

You can use the system logger services to merge data from multiple instances of an application, including from different systems across a Parallel Sysplex. The system logger significantly reduces the complexity of managing multiple logs (which would otherwise be required) and allows a single-system view of the log data in a Parallel Sysplex environment.