Error Handling In Cobol
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may occur in the system facilities that your program uses. You can anticipate possible error conditions by putting code
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into your program to handle them. If error-handling code is not error handling c++ present in your program, your program could behave in a manner that you did not anticipate, error handling db2 data files could be corrupted, and incorrect output may be produced. Without error-handling code, you may not even be aware that a problem exists. The action taken by
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your error-handling code can vary from attempting to cope with the situation and continue, to issuing a message, to halting the program. At a minimum, coding an error message to identify an error condition is a good idea. When you run an ILE COBOL program, several types of errors can occur. The ILE COBOL statement active
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at the time of a given error causes certain ILE COBOL clauses or phrases to be run. This chapter discusses how to: Use error-handling bindable APIs Initiate deliberate dumps Handle errors in string operations Handle errors in arithmetic operations Handle errors in input-output operations Handle errors in sort/merge operations Handle exceptions on the CALL statement Create user-written error-handling routines. ILE Condition Handling On the AS/400 system, there are several ways that programs can communicate status to one another. One of the main methods is to send an OS/400 message. There are several type of OS/400 messages. These include inquiry, informational, completion, escape, and notify. For example, the final message sent by the ILE COBOL compiler when a compilation is successful is LNC0901, Program program-name created in library library-name on date at time. Message LNC0901 is a completion message. If a compilation fails, you will receive message LNC9001, Compile failed. Program-name not created. Message LNC9001 is an escape message. An ILE condition and an OS/400 mes
the successful completion of the Application Engine program, change the field value to a positive value. Check for that value in your COBOL program.
Join INTELLIGENT WORK FORUMSFOR COMPUTER PROFESSIONALS Log In Come Join Us! Are you aComputer / IT professional?Join Tek-Tips Forums! Talk With Other Members Be Notified Of ResponsesTo Your Posts Keyword Search One-Click Access To YourFavorite Forums Automated SignaturesOn Your Posts Best Of All, It's Free! Join Us! *Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.Tek-Tips Posting Policies Jobs Jobs from Indeed What: Where: jobs by Link To This Forum! Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.Just copy and paste the BBCode HTML Markdown MediaWiki reStructuredText code below into your site. COBOL General discussion Forum at Tek-Tips HomeForumsProgrammersLanguagesCOBOL General discussion Forum ON CALL exception thread209-1697103 Forum Search FAQs Links MVPs ON CALL exception ON CALL exception rajesh082 (Programmer) (OP) 31 Oct 12 04:38 Hi, First of all, let me admit that its been a long time since I have written a plain COBOL call. However I still do remember the syntax and everything, so when this happened it really puzzled me. I have written a new COBOL Batch Module, lets say PROGA PROGA is calling PROGB as follows: CODE --> COBOLCall PROGB using inPROGB outPROGB on exception move 'Fejl - Call PROGB' to logLocation string 'Program ' PROGB ' not found' delimited by size into logDescription end-string perform errorExit end-call The thing is PROGB has not even been written till now. So I expected the program to fail here, but it went ahead without doing anything to the next statements. What I fopun even stranger was that when I removed the On exception condition, The program did abend as expected saying that the module PROGB is not found. CODE --> COBOLCall PROGB using inPROGB outPROGB end-call What is that I am overlooking for the ON exception condition not getting executed? RE: ON CALL exception MarcLodge (Programmer) 31 Oct 12 07:53 Hi Rajesh, I must admit I've never used the ON EXCEPTION statement as I've always passed return codes between programs and allowed the Operating System to sort out any errors where the program doesn't exist. To my mind, if somebody has gone to the trouble of including exception handling of this type in their operating system, then I might as well use it But, your statement, as yo