You can get sample code,

internally-developed

tools,

and

exits to

RACF. All this code works

in our environment, at

the

time

we make i

but is not officially supported. Each tool or sample has a README

describes

the

tool

or

sample and

any restrictions

on

its

use.

The

simplest

way

to

reach

this

code

is

through

the

RACF

home pag

home page,

clickSystem/390on

FTP Servers

 

under

the

topic,

“RACF

Sample

Materials.”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The

code

is

 

also

availablelscftp.pokfrom.ibm.com

 

throughanonymous

ftp .

 

To

get

access:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Log

in

as anonymoususer

 

.

 

 

 

 

 

 

 

 

 

 

2. Change

the directorycd ) /pub/racf/mvs(

 

to find the subdirectories th

 

contain

the

sample

code.

We'll

post an announcement on RACF-L,

 

MVSRACF, and SECURITY CFORUM whenever we add anything.

 

 

Restrictions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Because

the

sample

code

and

tools

are

not

officially supported,

Ÿ There are no guaranteed enhancements.

ŸNo APARs can be accepted.

The

name

and availabilityftp ofserverthe may change in the future. We'

post

an

announcement on RACF-L, MVSRACF, and SECURITY CFORUM

if

this

happens.

However, even with these restrictions, it should be useful for access to this code.

To Request Copies of

IBM

Publications

 

 

Direct

your

request for copies

of any

IBM publication to your IBM

to

the

IBM

branch office serving

your

locality.

There is also a toll-free customer support number (1-800-879-2755) available Monday through Friday from 6:30 a.m. through 5:00 p.m. Mountain Time. You use this number to:

Ÿ Order or inquire about IBM publications

Ÿ Resolve any software manufacturing or delivery concerns

ŸActivate the Program Reorder Form to provide faster and more conve ordering of software updates

See the advertisement at the back of the book forOS/390information about Security Server (RACF) Information Package.

About This Book xv

Page 17
Image 17
IBM OS/390 manual Publications, Ftp, FTP Servers

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.