XRL/22, Mvs Bcp | IBM OS/390 specs

/XRL/22

D150009	2043CH15
	336	(1)	PL/I compiler options
		(2)	options specific to MVS compiler
			336, 336, 336, 336, 337, 337, 337, 337
D150010	2043CH15
	337	(1)	PL/I compiler options
		(2)	execution options
			337, 337, 337, 338
D150014	2043CH15
	339	(1)	ENVIRONMENT attributes
		(2)	unsupported in MVS
			339, 339, 339, 339, 339, 339, 339, 339, 339, 340
D150019	2043CH15
	340	(1)	PL/I calling SORT
		(2)	parameters to be passed
			341, 341, 341, 341, 341, 341, 341, 341, 342
D170001	2043CH17
	351	(1)	Language Environment (LE)
		(2)	general comments on Language Environment
			351
D170016	2043CH17
	359	(1)	migrating from LE/VSE
		(2)	run-time options
			361, 362, 363
D170017	2043CH17
	364	(1)	migrating from LE/VSE
		(2)	user exits & abnormal termination exits
			364, 364, 365, 365
D170018	2043CH17
	365	(1)	migrating from LE/VSE
		(2)	callable services & math services
			366
C180004	2043CH18
	369	(1)	procedure language REXX
		(2)	environments
			370, 370, 371
D250005	2043CH25
	404	(1)	hardware install and configure
		(2)	inter-systems connectivity
			404, 404, 404, 405
D250006	2043CH25
	405	(1)	OS/390 software - order and install
		(2)	installing OS/390 fee-based
			405, 406, 406
D250007	2043CH25
	406	(1)	OS/390 software - order and install
		(2)	entitled methods of installing OS/390
			406, 407
D250008	2043CH25
	407	(1)	standards, procedures, documentation
		(2)	installation standards
			407, 408, 408, 408, 408, 408, 409, 409
D250009	2043CH25
	409	(1)	standards, procedures, documentation
		(2)	systems management procedures
			410, 410, 410, 410, 411, 411, 411
D250010	2043CH25
	412	(1)	standards, procedures, documentation
		(2)	documentation
			412, 412, 412, 412
D250013	2043CH25
	413	(1)	OS/390 customization
		(2)	new OS/390 system
			413, 414, 414, 415, 415
D250011	2043CH25
	415	(1)	OS/390 customization
		(2)	MVS BCP
			415, 415, 416
D250012	2043CH25
	416	(1)	OS/390 customization
		(2)	other OS/390 elements
			416, 416, 417
D260005	2043CH26
	424	(1)	VM, LPAR, or Standalone Systems
		(2)	our recommendation
			425, 425, 429, 430
D280003	2043CH28
	444	(1)	understanding the operator interfaces
		(2)	managing display consoles
			444, 445, 445
D280004	2043CH28
	445	(1)	understanding the operator interfaces
		(2)	extended MCS consoles
			445, 446
D280017	2043CH28

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.

IBM OS/390 manual XRL/22, Mvs Bcp

Models: OS/390

/XRL/22

MVS BCP

OS/390 specifications