Chapter 10. Troubleshooting your CGI programs

You can use the Work with Active Jobs (WRKACT JOB) command to check on the status of server jobs, as follows:

WRKACTJOB SBS(QHTTPSVR) JOB(server_instance)

When the server is not processing a request, the Work with Active Jobs display might be similar to Figure 1:

 

 

Work with Active Jobs

 

AS400SYS

 

 

 

 

 

 

10/22/97

16:35:38

CPU %:

.4

Elapsed time: 00:02:01

Active jobs:

98

 

Type options, press Enter.

 

 

 

 

 

2=Change

3=Hold 4=End

5=Work with

6=Release 7=Display message

8=Work with spooled files

13=Disconnect ...

 

 

Opt Subsystem/Job

User

Type

CPU %

Function

Status

 

DEFAULT

QTMHHTTP

BCH

.0

PGM-QZHBHTTP

TIMW

 

DEFAULT

QTMHHTTP

BCI

.0

 

TIMW

 

DEFAULT

QTMHHTTP

BCI

.0

 

TIMW

 

DEFAULT

QTMHHTTP

BCI

.0

 

TIMW

 

 

 

 

 

 

 

 

Bottom

Parameters or command

 

 

 

 

 

===>

 

 

 

 

 

 

 

F3=Exit

F5=Refresh F10=Restart statistics F11=Display elapsed data

F12=Cancel

F23=More options

F24=More keys

 

 

Figure 1. WRKACTJOB SBS(QHTTPSVR) Job(DEFAULT)

To find out if server jobs have ended abnormally, check the spooled files that contain the job logs (QPJOBLOG) for the user profile QTMHHTTP.

The symptoms that are described in this section would be seen running a request to the AS/400 server at a browser.

Symptom

Connection abandoned, dropped, or no data sent.

Note: Different browser issues different messages when no data is returned to the browser. Abandoned, dropped or no data will be displayed at the browser.

Cause: The system has incorrectly formatted a CGI program that writes data to standard output. The data that is written to stdout may have one of the following problems:

vNo data written to stdout

vNo “Content-type”, “Location”, or “Status” line

© Copyright IBM Corp. 1997, 2000

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IBM AS/400E manual Troubleshooting your CGI programs, Symptom
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AS/400E specifications

The IBM AS/400E, now more commonly known as IBM i, is a robust and versatile midrange server that has been designed to provide a comprehensive computing solution for businesses of all sizes. First introduced in the late 1980s, the AS/400 series has undergone multiple enhancements and rebranding, with the AS/400E being one of the notable iterations. This powerful platform is closely associated with IBM's commitment to reliability, scalability, and integrated business solutions.

One of the main features of the AS/400E is its highly integrated architecture that combines hardware and software into a cohesive system. This integration allows for seamless operations, reducing the complexity typically associated with managing disparate systems. The system is powered by IBM's proprietary OS/400 operating system, which has evolved into IBM i, featuring advanced capabilities like object-oriented programming, integrated database management, and security features that are essential for enterprise environments.

A key characteristic of the AS/400E is its robust database support, primarily through the use of DB2 for i. This integrated database management system enables efficient data handling and retrieval, facilitating real-time business analytics and reporting. Furthermore, the platform supports a variety of programming languages, including RPG, COBOL, and Java, making it flexible for developers who require diverse tools for application development.

The AS/400E is also known for its exceptional reliability and uptime, making it a preferred choice for critical business applications in industries such as finance, healthcare, and manufacturing. This reliability is backed by advanced error detection and correction mechanisms, as well as redundancy features that help prevent data loss and minimize downtime.

In terms of scalability, the AS/400E can effortlessly expand to accommodate growing business demands. Organizations can increase processing power by adding more resources without significant disruption. This scalability, combined with the system’s built-in virtualization capabilities, allows businesses to optimize resource usage and streamline operations.

Security is another defining feature of the AS/400E. The platform incorporates various layers of security measures, including user authentication, encryption, and comprehensive auditing capabilities, ensuring that sensitive business data is protected against unauthorized access.

Overall, the IBM AS/400E remains a powerful tool in the enterprise computing landscape, providing businesses with an integrated, reliable, and secure solution for their technological needs. Its enduring popularity is a testament to its capability to evolve with changing business requirements while maintaining its core attributes of high performance and stability.
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