Authorizing CICS regions to access MVS resources

You should consider authorizing access to the following when planning your security requirements to run CICS®:

CICS PDS libraries
Protect your CICS data sets that use RACF®. See Protecting CICS load module data sets.
VTAM® ACB
Authorize each CICS region userid to OPEN the VTAM ACB for the region’s specified APPLID. See Authorizing access to a CICS region’s VTAM ACB.
CICS system transactions
Authorize each CICS region userid to access the CICS category 1 system transactions. See Authorizing the region userid to access category 1 transactions.
SMSVSAM server
Authorize each CICS region to open the SMSVSAM control ACB if you plan to use CICS with VSAM record-level data sharing. See Authorizing access to an SMSVSAM server.
System logger log streams
Authorize each CICS region userid to access the MVS™ system logger log streams that are used by CICS. See Authorizing access to MVS log streams.
z/OS® UNIX System Services
Include an OMVS segment in the CICS region's user profile, specifying the UID parameter, to ensure that your CICS regions have the required access to z/OS UNIX system services. See Authorizing CICS region userids to z/OS UNIX System Services.
RACF resource classes
Activate the appropriate RACF resource classes to enable terminal users to access CICS resources and user-defined resources. See Activating RACF resource classes.
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