33.2.5Computer Associates

33.2.5.1CA-Convertor

CA-Convertor is a comprehensive system to manage and implement the conversion from VSE to MVS operating systems. CA-Convertor converts VSE COBOL and Assembler language programs and VSE JCL to true MVS programs and JCL, while automatically creating applicable documentation. It performs the burdensome conversion tasks that, under manual control, would be error-prone, tedious and repetitious. With CA-Convertor, the entire process is automated, eliminating redundant data manipulation and unnecessary manual procedures. Programmer productivity levels are not affected by constantly monitoring the conversion and, as CA-Convertor can execute on both VSE and MVS, you can start the conversion without requiring a production MVS environment.

Available for: MVS, VSE

33.2.5.2 CA-DUO

CA-DUO is VSE under MVS transition system software designed to simplify the conversion from the IBM VSE environment to MVS. CA-DUO provides the interface that allows existing VSE application programs to run directly under MVS without source program alterations. This unique approach conserves considerable data center resources, and facilitates a true MVS production environment in the least possible time.

CA-DUO allows all MVS facilities and most VSE facilities to be utilized. It uses standard MVS JCL, which may be generated by CA-Convertor. CA-DUO supports the following programming languages, access methods and data management system: Assembler, COBOL, FORTRAN, PL/I, RPG, RPG-II, DAM, ISAM, VSAM, EXCP, QSAM, BSAM, BISAM, QISAM, DL/I, BOMP, DBOMP, TOTAL, ADABAS/DB, CA-IDMS/DB and CA-Datacom/DB.

Available for: MVS

33.2.6 The Source Recovery Company

The Source Recovery Company recovers missing COBOL or Assembler source code from MVS, VM or VSE executable modules.

The recovered source is guaranteed to produce an executable module that is 100% functionally equivalent to the original executable module that you send them.

The Source Recovery Company can help save a great deal of time, effort, cost and minimize your overall Year 2000 and conversion project risk. You can avoid an expensive rewrite of a program, or even more expensive replacement of an application.

Listed is a brief summary of the services provided by The Source Recovery

Company:

Chapter 33. Conversion Services and Tools 525

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IBM OS/390 manual Computer Associates, Source Recovery Company, CA-Convertor, Ca-Duo

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.