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REPORT 1 - ACTIVE phases (lists all ′executed′ phases by library).

REPORT 2 - INACTIVE phases (lists all ′dormant or yet to be activated′ phases by library).

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REPORT 3 - Y2KREADY phases (lists all phases flagged as Y2K ready by library).

REPORT 4 - DUPLICATE phases (lists all ′duplicate′ phases by library).

Log File - four reports are provided which detail PHASE usage:

∙REPORT 1 - File Report by Phase (lists all ′active′ phases sequenced from most active (using a tally of the number of times the phase was invoked) to least active).

∙REPORT 2 - File Report by Library (phase/library cross-reference by library).

∙REPORT 3 - File Report by Jobname (phase/job cross-reference by job name).

∙REPORT 4 - File Report by Program (phase/program cross-reference by program).

Log File - three reports are available which provide details on FILES (for example, data sets) used:

∙REPORT 1 - File Report by Program (program/data set cross-reference by program).

∙REPORT 2 - File Report by Data Set (data set/phase cross-reference by data set).

∙REPORT 3 - File Report by Jobname (job/data set cross-reference by job name).

33.2.3IBM COBOL and CICS Command Level Conversion Aid (CCCA)

The tedious process of COBOL migration can be easier than you think with the IBM COBOL and CICS Command Level Conversion Aid (CCCA) for VSE Release

1.CCCA for VSE, a Program Offering, helps you easily convert old COBOL source code and copy books to the new COBOL standard.

CCCA for VSE converts OS/VS COBOL, DOS/VS COBOL, and COBOL 74 Standard VS COBOL II (either VS COBOL II Release 3, or VS COBOL II Release 4 (CMPR2)) source code to COBOL 85 Standard VS COBOL II Release 3 or 4 (NOCMPR2), or to IBM COBOL for VSE. You can customize this conversion process to meet your unique requirements.

CCCA simplifies the migration process by:

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Identifying and converting source code

Reducing the effort to convert programs

Minimizing conversion errors

522VSE to OS/390 Migration Workbook

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IBM OS/390 manual IBM Cobol and Cics Command Level Conversion Aid Ccca
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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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