Pssr has a Return operation, so the call from the main

handler remains in effect until the call stack entry is removed, or called to disable itSystem. See APItheReferencefor more information on these ILE bindable APIs.

Figure 118 shows an example of enabling and coding a cancel handler f procedure. (Cancel handlers can also be enabled for main procedures way.)

*-----------------------------------------------------------------

*Define the prototype for the cancel handler. This procedure is

*a local procedure.

	*-----------------------------------------------------------------
D CanHdlr		PR
D	pMsg		*
	*-----------------------------------------------------------------
	* Define the prototype for a subprocedure to enable the cancel
	* handler.
	*-----------------------------------------------------------------
D Enabler		PR
	*-----------------------------------------------------------------
	* Define the prototype for a subprocedure to call Enabler
	*-----------------------------------------------------------------
D SubProc		PR
	*-----------------------------------------------------------------
	* Main procedure. Call SubProc three times.
	*-----------------------------------------------------------------
C		CALLP	SubProc
C		CALLP	SubProc
C		CALLP	SubProc
C		SETON	LR

Figure	118 (Part	1 of 4).	Enabling and Coding a Cancel Handler for a Subprocedure

*-----------------------------------------------------------------

*Procedure SubProc. Call Enabler. Since this call will fail,

*define a local *PSSR subroutine to handle the error.

	*-----------------------------------------------------------------
P SubProc		B
C		CALLP	Enabler
	*-----------------------------------------------------------------
	* The PSSR has a RETURN operation, so the call from the main
	* procedure to SubProc will not fail.
	*-----------------------------------------------------------------
C	*PSSR	BEGSR
C	'Subproc PSSR'DSPLY
C		RETURN
C		ENDSR
P SubProc		E

Figure	118 (Part	2 of 4).	Enabling and Coding a Cancel Handler for a Subprocedure

Chapter 12. Handling Exceptions245

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.

IBM AS/400 manual Pssr has a Return operation, so the call from the main, Subproc Pssrdsply

Models: AS/400

Figure 118 shows an example of enabling and coding a cancel handler f procedure. (Cancel handlers can also be enabled for main procedures way.)

CALLP

CALLP

CALLP

CALLP

* The PSSR has a RETURN operation, so the call from the main

* procedure to SubProc will not fail.

*PSSR

'Subproc PSSR'DSPLY

RETURN

ENDSR

AS/400 specifications