How I can reread the physical file in CL program once the
end of file reached in same CL program.
- 20 Answers
- 59146 Views
- IBM, I also Faced
- E-Mail Answers
Answer Posted / abhishek bajpai
hi Shobhit,
POSDBF and OVRDBF can only position the file at the desired
location if the file hasn't reached EOF yet. If the file is
already at EOF, then thesekeywords won't help you in
positioning the cursor.
However, there is one keyword recently added to the CL
commands and that is 'CLOSE'. After the file is at EOF
mark, you can close it by using this keyword and the next
RCVF keyword will retrieve the first record again, or u can
position the cursor anywhere using POSDBF or OVRDBF.
Thanks
| Is This Answer Correct ? | 15 Yes | 5 No |
Post New Answer View All Answers
How to call one program from another program in RPG? please help me with the code
how can you display specific subfile page on the screen in unequal subfile?
What is the difference between copybooks and subprocedures in as400?
If my rpg program has a date field, what extra care I have to take while compiling that rpg program? If the file is keyed and I have declared the file as well as key list properly in my program. Still am getting an error message like "chain/reade operation is not allowed" what may be the case?
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): http://www.as400network.com/sharewarefiles/undelris.zip UNDEL for AS/400 Save File (CISC): http://www.as400network.com/sharewarefiles/undel.zip UNDEL for AS/400 Save File (Source code): http://www.as400network.com/sharewarefiles/undelsrc.zip 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 ( http://www.taatool.com ). The free file editor WRKDBF has a built-in undelete capability ( http://www.wrkdbf.com ), and several commercial file editors can undelete records. For a complete list of file editors, go to http://www.sourcebook400.com, select "Programmer Tools" under "Product Category," then select "File Editors."
how do I declare a table or array in rpg iv?
what was the robotech rpg?
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
how does the rpg element work?
what is the procedure and explain about real time scenario.
How to handle duplicate error handling in RPG?
How do u design a physical file, when you have 2 Unique fields like for eg in A student file student ID and student examination no both are unique
1. What is bound-by-call and bound-by-reference? 2. Where and why is *Nomain used? 3. What are the difficulties faced by programmers when using service programs? 4. Explain the different ways of parsing and compiling XML in iSeries.
Interviewer asked me write down DDS for load all subfile .can anybody write dds
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?
