Job logs and communication problems, Qsysarb

Displaying the Product Activity Log to solve communication problems

The Print Error Log and the Product Activity Log provide you with important information for solving communications problems.

To view the product activity log, do the following:

1.Display or print the product activity log using these steps:

v Type STRSST (Start System Service Tools) on any AS/400 command line, and press the Enter key. v In the System Service Tools menu, select Option 1 to display or print the product activity log.

For more information about the Product Activity Log, see the Communications Management book.

For related information, see:

vHistory logs

v“System service tools and communication problems” on page 82

v“Using error messages to aid in error recovery” on page 84

Displaying the Print Error Log to solve communication problems

The Print Error Log and the Product Activity Log provide you with important information for solving communications problems.

To view the Print Error Log, do the following:

1.Type PRTERRLOG (Print Error Log) on any AS/400 command line. Press the Enter key.

The command places a formatted printer file of the machine error log in a spooled printer file that is named QPCSMPRT or in a specified output file.

2.Find and read these error logs.

For more information about displaying the Print Error Log, see the Communications Management book.

A variety of job logs may contain information that helps you determine the cause of a communications problem. For a detailed description of these job logs, see: “Job logs and communication problems”

Job logs and communication problems

A variety of job logs may contain information that helps you determine the cause of a communications problem. Many of these logs contain messages that can help you understand what the system has done concerning your communications functions. The following are some of the most useful jobs to review when you have a communications problem:

QSYSARB

System arbiter. This job log is for devices, and communications in general. It also contains ONLINE at IPL messages.

QSYSCOMM1

Communications and input/output system job. This job log is for problem logging and for local area network (LAN) manager messages. It also contains ONLINE at IPL messages for network servers and their lines.

QCMNARB01 through QCMNARB99

Communications arbiter. These job logs contain information for communications startup, take-down, and error recovery.

QLUS Logical unit services.

QLUR Logical unit (LU) 6.2 resynchronization job. This job log is for two-phase commit synchronization processing.

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AS/400 specifications

The IBM AS/400, now known as the IBM iSeries, is a midrange computer system that has been a cornerstone of enterprise computing since its introduction in 1988. Designed to provide a robust platform for business applications, the AS/400 is celebrated for its reliability, scalability, and integrated database capabilities.

One of the key features of the AS/400 is its Integrated Operating Environment, which blends hardware and software resources seamlessly. This integration allows businesses to execute diverse workloads, ranging from traditional applications to modern web-based services, all on a single platform. The operating system, OS/400 (now IBM i), offers a rich set of APIs and tools for developers, simplifying application development and management.

Another standout characteristic of the AS/400 is its built-in database, DB2 for i. This powerful relational database management system allows for efficient data handling and provides advanced features such as support for SQL, XML, and JSON, making it easier for businesses to manage their data and integrate it with other systems. The database's tight integration with the operating system enables high performance and security.

In terms of scalability, the AS/400 can accommodate small businesses as well as large enterprises, with the ability to support hundreds of users simultaneously. Its architecture allows for easy upgrades in hardware, meaning that organizations can scale their systems without replacing the entire infrastructure.

Security is another critical attribute of the AS/400. With a sophisticated security model, it offers built-in user authentication, access control, encryption, and auditing capabilities to protect data and applications from unauthorized access.

The AS/400 also supports multiple programming languages, including RPG, COBOL, Java, and PHP, giving organizations the flexibility to choose the development tools that best fit their needs. This diversity helps maintain legacy applications while also developing new ones that leverage modern technologies.

Moreover, the platform supports both traditional green-screen interfaces and modern graphical user interfaces, allowing organizations to transition smoothly into contemporary user experience paradigms.

Overall, the IBM AS/400 stands out as a resilient, flexible, and secure computing platform that enables organizations to effectively manage their business operations, streamline processes, and adapt to changing market demands. Its unique combination of integrated features and capabilities ensures that it remains relevant in today's fast-paced technology landscape.