Manuals / IBM / Computer Equipment / Server

IBM OS/390 manual XRL/15

Models: OS/390

1 673
Download 673 pages 53.75 Kb
Page 661
Image 661

/XRL/15

 

 

 

3, 3, 4, 4, 10, 10, 13, 18, 27, 28, 29, 35, 35, 35, 36, 39, 42,

 

 

 

43, 44, 134, 163, 182, 193, 205, 235, 241, 250, 251, 329,

 

 

 

352, 353, 354, 358, 359, 371, 401, 420, 485, 529, 529,

 

 

 

531, 531, 532

ECH0024

2043VARS

 

 

 

i

(1)

SORT

 

 

 

131, 341, 341, 342, 377, 379, 379

ECH0025

2043VARS

 

 

 

i

(1)

DASD

 

 

 

16, 108, 108, 108, 108, 108, 109, 120, 129, 129, 130, 304,

 

 

 

402, 404, 408, 408, 425, 425, 432, 432, 432, 433, 433, 508

SYSTIND

2043VARS

 

 

 

i

(1)

system

 

 

 

11

VIRTIND

2043VARS

 

 

 

i

(1)

virtual storage

 

 

 

5, 135, 289

APPLIND

2043VARS

 

 

 

i

(1)

application

 

 

 

10, 32, 47, 50, 137, 150, 179, 196, 221, 358, 430, 440,

 

 

 

495, 548

ANALIND

2043VARS

 

 

 

i

(1)

analyzing

 

 

 

473, 474, 476, 500

AUTIND

2043VARS

 

 

 

i

(1)

automated

 

 

 

37, 50, 488, 490, 519

BATIND

2043VARS

 

 

 

i

(1)

batch

 

 

 

14, 162, 171, 195, 451, 512

CATIND

2043VARS

 

 

 

i

(1)

catalog

 

 

 

110, 110, 110, 111, 114, 114, 115, 117, 118, 120, 120,

 

 

 

125, 432, 476

COMMIND

2043VARS

 

 

 

i

(1)

command

 

 

 

163, 171, 231, 242, 453, 454

COMPIND

2043VARS

 

 

 

i

(1)

comparing

 

 

 

86, 89, 91, 181, 238, 242, 250, 328

CONTIND

2043VARS

 

 

 

i

(1)

controlling

 

 

 

444, 447, 447, 448, 448, 448, 448, 449, 449, 449, 449,

 

 

 

449, 450, 450, 450, 450, 451, 451, 451

COURIND

2043VARS

 

 

 

i

(1)

courses

 

 

 

535, 536, 536, 537, 537

DATIND

2043VARS

 

 

 

i

(1)

data

 

 

 

75, 76, 125, 125, 159, 182, 182, 195, 292, 405, 407

CONVIND

2043VARS

 

 

 

i

(1)

converting

 

 

 

163, 252, 252, 253, 258, 259, 259, 345, 516

DATBIND

2043VARS

 

 

 

i

(1)

database

 

 

 

175, 176, 176, 180

DEFIND

2043VARS

 

 

 

i

(1)

defining

 

 

 

72, 203, 221, 228, 229, 230, 230, 236, 236, 240, 293

DEVIND

2043VARS

 

 

 

i

(1)

device

 

 

 

36, 80, 329, 402, 448, 448, 448

DIFFIND

2043VARS

 

 

 

i

(1)

differences

 

 

 

169, 209, 241, 419

DISPIND

2043VARS

 

 

 

i

(1)

display

 

 

 

259, 444, 444, 445, 447, 448, 449

DOSIND

2043VARS

 

 

 

i

(1)

DOS

 

 

 

335, 343, 345, 356

DOSCIND

2043VARS

 

 

 

i

(1)

DOS/VS COBOL

 

 

 

252, 253, 260, 263

EXITIND

2043VARS

 

 

 

i

(1)

exits

 

 

 

147, 148, 191, 211, 220, 221, 230, 243, 364, 364, 364,

 

 

 

365, 385, 415

FCBIND

2043VARS

 

 

 

i

(1)

FCB

 

 

 

209, 217, 217, 218

FILIND

2043VARS

 

 

 

i

(1)

file

 

 

 

35, 35, 50, 72, 124, 234, 257, 257, 258, 330, 334, 346,

 

 

 

492, 546

Page 660 Page 662
Page 661
Image 661
IBM OS/390 manual XRL/15
Page 660 Page 662

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.