You can use global access checking to improve the performance of RACF® authorization checking for selected resources. For example, an entry in the global access checking table can allow all of the users on the system to have READ access to the SYS1.HELP data set.

The global access checking table is maintained in storage and is checked early in the RACF authorization checking sequence. If an entry in the global access checking table allows the requested access to a resource, RACF performs no further authorization checking. This can eliminate the need for I/O to the RACF database to retrieve a resource profile, which can result in substantial performance improvements.

If an entry in the global access checking table allows a requested access to a resource, no auditing is done for the request.

For information on planning and setting up the global access checking table, see Setting up the global access checking table.