Updating an existing structure-based log stream to another structure

You can Start of change update End of change an existing structure-based log stream to use a different coupling facility structure. Do this by issuing the IXGINVNT REQUEST=UPDATE service with the STRUCTNAME parameter to identify the new structure to be associated with the log stream.

To upgrade a structure-based log stream to use a new coupling facility structure, the following must be true:

The LOGR couple data set must be formatted at a z/OS® Version 1 Release 2 (HBB7705) level or later.
The IXGINVNT request must be submitted on a system at z/OS Version 1 Release 3 or later.
The structure specified on the STRUCTNAME parameter must be defined in a structure definition in the LOGR policy.
All connections (active or failed) to the log stream must be disconnected.

Before connecting to or issuing any system logger services against an upgraded log stream, you must also make sure that the structure associated with the log stream is specified in the CFRM policy couple data set.