Managing Activation Groups

programs activated within one activation group are developed as one co application.

You identify the activation group that

your ILE program will run in at

program creation. The activation group is

determined

by

the

value

spec

ACTGRP

parameter when

the

program object

was created. (OPM programs alw

run in the default activation group; you

cannot

change their

activation

cation.)

Once

an

ILE

program (object

type *PGM)

is

activated,

it

remain

until

the

activation

group

is

deleted.

 

 

 

 

 

 

The

remainder

of

this section

tells

you

how to

specify

an

activation

to delete one.

For

more

information on activationILEgroups,Concepts.refer to

 

Specifying an Activation

Group

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You

control

that activation

group

your

ILE

program

will

run

in

by speci

for

the

ACTGRP

parameter

when

you

create

your program

(using

CRTPGM

or

CRTBNDRPG)

or

service

program

(using CRTSRVPGM).

 

 

 

 

 

 

Note:

If

you

are

using

the

CRTBNDRPG

command, you

can

only

specify

a v

 

for

ACTGRP

if

the

value

of

DFTACTGRP is

*NO.

 

 

 

 

 

You can choose one of the following values:

¹ a named activation group

A named

activation

group allows you to manage a collection of

ILE pro

and

service

programs as one application. The activation

group

is

cre

the

first

program that specified the activation group

name

on

crea

It

is

then

used

by all programs and service programs

that

specify

activation group name.

A named activation group ends when it is deleted using the CL comman RCLACTGRP. This command can only be used when the activation group is longer in use. When it allis resourcesnded, associated with the programs and service programs of the named activation group are returned to system.

The named activation group QILE is the default value of the ACTGRP eter on the CRTBNDRPG command. However, because activation groups are intended to correspond to applications, it is recommended that you different value for this parameter. For example, you may want to n vation group after the application name.

¹*NEW

When *NEW is specified, a new activation group is created whenever program is called. The system creates a name for the activation gr name is unique within your job.

An activation

group

created with *NEW

always

ends when

the program(s)

ciated

with

it

end. For this reason, if you plan

on

returning

from

with

LR

OFF

in

order to keep your program active,

then

you

should

*NEW

for

the

ACTGRP

parameter.

 

 

 

 

 

 

 

Note:

This value

is not valid for service programs.

A

service

program

 

run

in

a

named activation group

or the

activation

group

of

its

*NEW is the default value for the ACTGRP parameter on the CRTPGM command.

110 ILE RPG for AS/400 Programmer's Guide

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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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