NJE Network Management Records JES2 records the following information reflecting network events:

SMF 55 Network Signon

SMF 56 Network Integrity (invalid password) SMF 58 Network Signoff

See System Management Facilities for details.

NJE Accounting

Most NJE related information is carried in the NJE headers as the job is routed from node to node. Here is a summary of the differences between POWER and JES2 accounting records for NJE:

Table 16. Accounting Records for NJE Activities

NJE Activity

VSE/POWER Account

MVS/JES2 SMF Record

 

Record

 

 

 

 

Job Transmission

Transmit/Receive

SMF26

 

Account Record

 

 

 

 

SYSOUT Transmission

Transmit/Receive

SMF57

 

Account Record

 

 

 

 

Job & SYSOUT Receipt

Transmit/Receive

- N/R -

 

Account Record

 

 

 

 

Signons

- N/R -

SMF55

 

 

 

Signoffs

Network Account Record

SMF58

 

 

 

Start BSC Line

- N/R -

SMF47

 

 

 

Start SNA Line

- N/R -

SMF52

 

 

 

Stop BSC Line

- N/R -

SMF48

 

 

 

Stop SNA Line

- N/R -

SMF53

 

 

 

Line PW Violation

- N/R -

SMF49

 

 

 

Node PW Violation

- N/R -

SMF56

 

 

 

KEY: - N/R - Not Recorded

10.3.10 RAS Characteristics

JES2 has extensive recovery routines in the event of a failure within the spooling subsystem; many more than VSE/POWER. Here are some examples:

Program check within the JES2 code

Hardware Problem: Defective Track on Spool Disk Error Recovery and the JES2 ªBADTRACKº initialization statement.

Defective Spool Volume - Work continues without defective spool volume, replace if required

Defective Track/Volume in Checkpoint - Checkpoint reconfiguration dialog

Tape I/O Error - Error Recovery (not JES)

Start JES2 without IPL with a Hot Start

Spool Filling Warning Message

224VSE to OS/390 Migration Workbook

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IBM OS/390 manual RAS Characteristics, NJE Accounting, Accounting Records for NJE Activities

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.