getGMAP callable service 6, 12 getUMAP callable service 6, 12 global access checking 10

H

hardware

requirements

planning

considerations 22

HRF2240

9

I

ICHEACTN macro, changes to 17 ICHEINTY macro, changes to 17 ICHETEST macro, changes to 17 initUSP callable service 6, 12 installation considerations 25

templates 27 installation exits 1

See alsoexits IRR@XACS 19 ISPF panels

changed 19

L

library, RACF publications changes to 20

LOGSTR keyword 16

LSQA

storage requirement 26

M

macros

changes to 17

RELEASE=2.4 keyword 17, 23 messages

changes to 17 new 17

migration

recommended strategy 21 migration considerations

administration 2 application development 3 auditing 3 customization 2 general user 3 installation 2 installation-defined classes 29 overview 1

planning 1 migration path

from RACF 1.9 22 from RACF 1.9.2 22 from RACF 2.1 22 from RACF 2.2 21

migration path(continued)

from releases prior to RACF 1.9 22

from Security Server (RACF) Release 1 21

N

new and enhanced support summary of changes 11

O

OpenEdition services

auditing use of superuser status 6, 23 changed panels 19

changes to data areas 16

definition of a system-wide default 6, 23 description of enhancements 6

OS/390 OpenEdition 1

See alsoOpenEdition services

OS/390 Security Server (RACF) Release 1 migration path from 21

P

panels

 

 

 

 

 

 

 

changed

 

19

 

 

 

PASSWORD

 

command

13

 

password history

 

 

changes

31

 

 

 

list

 

31

 

 

 

 

PASSWORD

 

USER

command 7

 

PERMIT

command

13,

14

 

planning

 

considerations

 

compatibility

 

23

 

hardware

 

requirements 22

 

planning

 

for

 

migration

 

overview

 

1

 

 

 

PLPA

 

 

 

 

 

 

 

storage

requirement 25

 

PROCESS

class

 

 

 

 

 

auditing

 

23

 

 

product

ID

 

 

 

 

changes needed because of 10

program control by system ID

 

administrative considerations

31

compatibility

considerations

23

program

profiles

23

 

programming

interfaces

 

changes

to

CDT

12

 

data

areas

15

 

 

new callable service 11, 12

publications

 

 

 

 

changes

to

RACF

library 20

 

on CD-ROM xii

 

 

 

softcopy

 

xii

 

 

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

Page 70
Image 70
IBM OS/390 manual See alsoexits IRR@XACS 19 Ispf panels, Lsqa, Plpa

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.