/XRL/20

D080011

2043CH08

 

 

 

181

(1)

SQL/DS to DB2

 

 

(2)

other comparison areas

 

 

 

181, 182, 182, 182, 182

D090001

2043CH09

 

 

 

186

(1)

ACF/VTAM

 

 

(2)

product installation

 

 

 

186

D090002

2043CH09

 

 

 

187

(1)

ACF/VTAM

 

 

(2)

resource definition and operation

 

 

 

190, 190

D090003

2043CH09

 

 

 

190

(1)

ACF/VTAM

 

 

(2)

customization and programming

 

 

 

190, 191

D090011

2043CH09

 

 

 

195

(1)

migrating TCP/IP

 

 

(2)

TCP/IP configuration

 

 

 

195, 195

D090014

2043CH09

 

 

 

195

(1)

migrating TCP/IP

 

 

(2)

user written TCP/IP applications

 

 

 

196, 196, 196, 196, 196

D090017

2043CH09

 

 

 

198

(1)

MQSeries

 

 

(2)

MQSeries in operating system environment

 

 

 

198, 200, 201, 202

D100001

2043CH10

 

 

 

207

(1)

JES2

 

 

(2)

major differences

 

 

 

207, 208, 208, 208, 208, 209, 209, 209

D100002

2043CH10

 

 

 

209

(1)

implementing JES2

 

 

(2)

setting up required resources

 

 

 

210, 210

D100003

2043CH10

 

 

 

210

(1)

implementing JES2

 

 

(2)

starting JES2

 

 

 

211

D100004

2043CH10

 

 

 

211

(1)

implementing JES2

 

 

(2)

tailoring JES2

 

 

 

211, 211, 211, 211

D100005

2043CH10

 

 

 

212

(1)

JES2/POWER functional comparison

 

 

(2)

input service

D100006

2043CH10

 

 

 

213

(1)

JES2/POWER functional comparison

 

 

(2)

job scheduling

 

 

 

213, 213, 214, 214, 214

D100007

2043CH10

 

 

 

215

(1)

JES2/POWER functional comparison

 

 

(2)

output service

 

 

 

216, 216, 216, 217, 217, 217, 217, 217, 217, 218, 218

D100008

2043CH10

 

 

 

218

(1)

JES2/POWER functional comparison

 

 

(2)

interactive user interfaces (ICCF/CMS/TSO)

D100009

2043CH10

 

 

 

219

(1)

JES2/POWER functional comparison

 

 

(2)

remote job entry

 

 

 

219, 219, 220, 220

D100010

2043CH10

 

 

 

220

(1)

JES2/POWER functional comparison

 

 

(2)

network job entry

 

 

 

221, 221, 221, 221

D100011

2043CH10

 

 

 

221

(1)

JES2/POWER functional comparison

 

 

(2)

application interfaces

 

 

 

221, 221, 222, 222, 222

D100012

2043CH10

 

 

 

223

(1)

JES2/POWER functional comparison

 

 

(2)

accounting comparisons

 

 

 

223, 223, 224

D100013

2043CH10

 

 

 

224

(1)

JES2/POWER functional comparison

 

 

(2)

RAS characteristics

D100014

2043CH10

 

 

 

225

(1)

JES2/POWER functional comparison

 

 

(2)

JES2 testing techniques

 

 

 

225

D100015

2043CH10

 

 

 

225

(1)

POWER/JES2 detailed comparisons

 

 

(2)

mapping POWER parameters to JES2 init parms

 

 

 

225, 227, 228, 229, 230, 230

Page 666
Image 666
IBM OS/390 manual XRL/20, Acf/Vtam

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.