Chapter 23. LISTLOG/PRINTLOG - Printing Log Streams
Chapter 21. VSAM Backup/Restore

18.5Migration Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371

18.5.1REXX and SAA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372

18.6REXX Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372

Part 4. Converting VSE Utilities to OS/390 Utilities . . . . . . . . . . . . . . . . . . . . . . . 373

Chapter 19. SORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375

19.1JCL Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375

19.2Control Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377

19.3 Additional DFSORT/VSE Migration Considerations . . . . . . . . . . . . 379

19.3.1Control Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379

19.3.2ICETOOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380

Chapter 20. DITTO

. . . . . . . . . . . . . . .

381

20.1

Compatibility with Previous Releases of DITTO

. . . . . . . . . . . . . .

381

20.2

DITTO Functions that are No Longer Supported

. . . . . . . . . . . . . .

382

20.3

DITTO Functions that are Not Recommended

. . . . . . . . . . . . . . .

383

20.4

DITTO Function Code Synonyms

. . . . . . . . . . . . . . .

384

20.5

Batch Keywords that are No Longer Supported

. . . . . . . . . . . . . .

384

20.6

Batch Keywords that are Not Recommended

. . . . . . . . . . . . . . .

385

20.7DITTO/ESA Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385

. . . . . . . . . . . . . . . . . . . . . . . . 387

21.1VSAM Backup/Restore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387

21.1.1OS/390 VSAM Backup/Restore . . . . . . . . . . . . . . . . . . . . . 387

21.1.2VSE/VSAM Backup/Restore . . . . . . . . . . . . . . . . . . . . . . . 387

Chapter 22. Librarian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389

22.1Overall Library Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389

22.1.1OS/390 ISPF Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 390

22.1.2OS/390 Library Management . . . . . . . . . . . . . . . . . . . . . . . 391

. . . . . . . . . . . 393

23.1VSE PRINTLOG Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393

23.2VSE LISTLOG Utility Program . . . . . . . . . . . . . . . . . . . . . . . . . 393

23.3OS/390 Hardcopy Processing . . . . . . . . . . . . . . . . . . . . . . . . . 393

23.3.1SYSLOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394

23.3.2Printing SYSLOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394

23.4OPERLOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394

23.4.1Printing OPERLOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394

23.5 JES2 System Data Sets - Job Log and System Messages . . . . . . . . 395

23.6Systems Management Recording . . . . . . . . . . . . . . . . . . . . . . 395

23.6.1Printing SMF Records . . . . . . . . . . . . . . . . . . . . . . . . . . . 395

Chapter 24. VSE/Fast Copy and OS/390 DFSMSdss

397

24.1

VSE/Fast Copy (Online and Stand-Alone)

397

24.2

DFSMSdss - OS/390 Component

398

Part 5. Setting Up the Migration Environment

. . . . . . . . . . . . . . . . . .

399

Chapter 25. Prepare the Migration Environment

. . . . . . . . . . . . . . . . .

401

25.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401

25.2 Install and Configure Required Hardware . . . . . . . . . . . . . . . . . . 402

Contents xi

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IBM manual Part 4. Converting VSE Utilities to OS/390 Utilities, Part 5. Setting Up the Migration Environment
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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.
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