Data sharing in IMS environments

When more than one IMS system has concurrent access to an IMS database, those systems are sharing data, and you have a data-sharing environment. In a data-sharing environment, you manage multiple IMS systems, each running on different z/OS® systems in a sysplex. Such configurations require more sophisticated operations and recovery procedures.

This information describes how to allow more than one IMS online or batch system concurrent access to data that resides in a common database. If you use IMS to control this common access to data, the data sharing support provided by Database Recovery Control (DBRC) is required.