A Strategy to Avoid

Job

Default Activation Group

*PGM(X)

CL

QILE Activation Group

*PGM(Y)

RPG

*SRVPGM(Z)

RPG

Figure

11.

Scenario to Avoid.

An application is split between the OPM default activation

group

and a

named

activation

group.

When

split

across

the default activation group and any named activation

are mixing OPM behavior with ILE behavior. For example, programs in the

activation group

may

be

expecting

the

ILE programs to

free

their res

the program ends. However, this will

not

occur until the activation grou

Similarly,

the

scope

of

overrides

and

 

shared

ODPs

will

be

more

diffic

when

an

application

is split

between

the

default

activation

group

and

By

default,

the

scope

for

the

named

group

will

be

at the

activation

for the default activation group, it

 

can

be

either

call

level

or

job

group level.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

32 ILE RPG for AS/400 Programmer's Guide

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Image 56
IBM AS/400 manual Activation Group
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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.
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