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RPG400 Interview Questions
Questions Answers Views Company eMail

Can we journel logical file and access path? Can we use commitment control for non-join L.F?

4 9572

RETRIVING DELETED RECORDS :- I'm frequently asked how to retrieve deleted records from an unjournaled physical file when the deleted records have not yet been removed from the file. Utility UNDEL lets you undelete records in a physical file. This public domain program is available in CISC and RISC versions, and the complete source code is available for download at: UNDEL for AS/400 Save File (RISC): UNDEL for AS/400 Save File (CISC): UNDEL for AS/400 Save File (Source code): The utility takes advantage of the fact that deleted records in physical files are only flagged as deleted, and the record data still exists until it is overwritten or the file is reorganized with a utility such as RGZPFM. UNDEL simply reads the deleted record, then reuses the record by writing over it with the new record (thus eliminating the flag for the deleted record). Some homegrown and commercial utilities copy the file containing undeleted records to a save file, then use a program to read the save file, which contains live and undeleted records, to a file to undelete the records. The UNDEL utility is superior to the SAVF technique because there's no need to copy the file to a save file, which is especially important for really large files. When run, UNDEL displays the physical file records in their unformatted, raw text form. You can either position the display to a given relative record number or use F19 or F20 to find the previous and next deleted record, respectively. The utility also includes online help, which is almost unheard of for free utilities. Other utilities include the ability to undelete records. You can use the RTVDLTRCD command in the old QUSRTOOL (no longer supported by IBM). QUSRTOOL is now a commercial product called TAA Productivity Tools ( ). The free file editor WRKDBF has a built-in undelete capability ( ), and several commercial file editors can undelete records. For a complete list of file editors, go to, select "Programmer Tools" under "Product Category," then select "File Editors."


I have 1000 records in a file. I would like to generate 10 identical reports from this record with same format (structure of records) how do I do this?


1 4405

I have two sessions S1 & S2 under this 3 jobs(say j1,j2,j3 under session S1) And 2 jobs(Say j4, j5 Under session S2)is running. How many QTEMP & how many LDA will create for the same.


9 8347

What is SFLNXTCHG keyword why it has used and where? Briefly explain with Example.


2 14521

How do I read records from Subfile? what is the purpose of READC explain with example?


4 12413

i would like to know under what circumstance the object will get locked on AS400.


5 7199

what r drawbacks of OPM? Why do we go for ILE RPG?

1 7906


3 7535

Hi all friend, Could Any body send me the code (with coding) of this senario because I have tried but I am stucking somewhere so Please reply ASAp with coding. senario:Q: I have to write the flat file(FLAT1) into the three different PFS (PF1,PF2 and PF3) with the respect of H line data, D line data and Z line data of flat file. where I have different data in flat file(FLAT1) which is mentioned below with data. H0929200909282009092820095529420003000073 D2222220006765555webservi001633.9909222009092820090924200951 8564380134049ROSNER TOYOTA OF FREDE FREDERICKSBURVA 224080000USA840840001633.99001633.99851856492689800208001915 511001633.990408490000000.0000000003446048 1,3 110793145 09070700351 372367 Rosner Motors D3333320006774444webservi000271.2409222009092820090924200951 8564380134049ROSNER TOYOTA OF FREDE FREDERICKSBURVA 224080000USA840840000271.24000271.24851856492689800208001835 511000271.240930680000000.0000000003450293 1 110793254 09072100079 373933 Rosner Motors Z0929200900000020001905.25 FLAT1 has the three pf data H line-represents the header pf data,D-Represent Details pf data,Z-Represents the trailer pf data Now I have to write H line data of flat file into Header pf (PF1),D line data of flat into datails pf(PF2) and Z line data of flat file into pf(PF3) with the spefic position(H,D and Z data of flat file into PF1, PF2 and PF3) of flat file.


4 7500

How do you know if a record exists without doing a READ and CHAIN?


6 12809

What will be your approach in going either for OPNQRYF or Logical files. Which one to go for?

2 5820

How do you call procedures in ILE?

3 5924

What is the syntax of passing parameters to a procedure by value?

1 4901

How do you code file / field renames in ILE RPG?

Accenture, IBM,

4 10063

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Un-Answered Questions { RPG400 }

write an RPG program to calculate the marks of 5 students (A,B, C, D, E)in 3 different subjects (eng, math, sci) an display on the screen


Hi Viewers can any body explain me how to update and ahange the already existed data in physical file using subfile ? please explain me with the code if possible?


1.Load an runtime array of length 99 from the pf and you want to handle all the possible errors?


do you use message subfiles? What are the necessary keywords required coding a message subfile?


can I touch the array during treatments?


how can I tell when to replace the array?


How to search particular records from the database file in rpg?


are there any useful c runtime apis that I can call from rpg iv?


What is difference between bind by copy and bind by reference?


When it is desirable to describe files Internally?


is this a rpg channel?


What is file identifier where we can use?


which program rpg or cl is efficent to update a transaction onto a database file and why ?


how do I play {insert rpg system here}?


if there is a module object , how to find the program object for this module object.Assume the module object name and program object name is not same.