Enable/Disable Changes

OS/390 Version 2 Release 4 has a new

product ID that affects the

function

in

all of

its elements

including

the Security Server. The ID()

the IFAPRDxx parmlib member needs to be "5647-A01". The remainder of th

parameters

remain

the same. Without this necessary

change

to

the ID(

the Security Server will not initialize.

In

order to

keep

from

making c

future, you can use the value ID(*).

For

moreOS/390 information,Security

see

Server

(RACF)

System

Programmer's

Guide.

 

 

 

 

 

OW26237 Enhancements of

Global

Access

Checking

 

 

 

 

This enhancement allows RACROUTE REQUEST=AUTH processing to use

global

 

access checking

for

general

resource classes regardless of whether o

class has been RACLISTed by either SETROPTS RACLIST or RACROUTE

 

 

REQUEST=LIST. Authorization checking using RACROUTE REQUEST=AUTH

 

 

 

searches

the

global

access

checking table for a matching

entry,

ignori

the

class. If

no global access checking table entry matches

the

sear

access specified in the entry is less than the access

being reques

searches

for

a

matching profile in the class. With this

release

of

Server (RACF), this processing occurs regardless of whether

or

not

the

RACLISTed

using

SETROPTS

RACLIST

or RACROUTE REQUEST=LIST.

 

 

 

10 OS/390 V2R4.0 Security Server (RACF) Planning: Installation and Migration

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IBM OS/390 manual Enable/Disable Changes, Guide, OW26237 Enhancements, Access, Raclist

OS/390 specifications

IBM OS/390, a versatile operating system, was a cornerstone in enterprise environments and played a pivotal role in mainframe computing. Released in the mid-1990s, OS/390 combined the strengths of IBM's MVS (Multiple Virtual Storage) with new features and enhancements, targeting scalability, reliability, and performance in demanding business applications.

One of the key features of OS/390 was its robust support for multiple users and processes. The system allowed thousands of concurrent users to access applications and data, ensuring high availability and minimizing downtime—a critical requirement for many large organizations. This scalability was supported through various enhancements in memory management and processor scheduling, enabling optimal resource allocation across diverse workloads.

OS/390 was known for its superior workload management capabilities. The Workload Manager (WLM) component allowed administrators to define service policies, specifying how system resources would be allocated according to the priority of tasks. This ensured that critical business processes received the necessary resources while less critical tasks were managed more flexibly.

Another significant characteristic of OS/390 was its commitment to security. The operating system provided comprehensive security features, including user authentication, data encryption, and auditing capabilities. This focus on security was vital for organizations handling sensitive data, ensuring compliance with regulations and safeguarding against unauthorized access.

OS/390 also supported advanced technologies that facilitated integration and development. The system included features like the IBM CICS (Customer Information Control System) for transaction processing and IMS (Information Management System) for database management. These technologies allowed organizations to build robust, high-performance applications tailored to specific business needs.

The ease of network integration was another strength of OS/390. With the advent of the Internet and global connectivity, OS/390 systems could easily interface with various network protocols, enabling businesses to operate in a connected world. This inclusion paved the way for many organizations to expand their capabilities and offer new services, driving digital transformation.

In conclusion, IBM OS/390 represented a significant advancement in mainframe technology, combining scalability, security, and robust workload management. Its rich feature set and support for critical enterprise applications solidified its role as a vital component of many organizations' IT infrastructures, ensuring they could meet their operational challenges head-on while supporting future growth. As technology continues to evolve, the legacy of OS/390 remains influential in the realm of computing.