1. I have2 records in a PF.
READ PF
DO
DSPLY EMPNO
RETRN
DSPLY EMPNO
ENDDO
What was the output
2. SETON LR vs RETURN
3. Primary File
4. How to delete a deleted spaces
5. How to read a PF in reverse order in CL
6. I have a object in Lib A, B and C. But it shows in D
Lib..Why?
7.
Answers were Sorted based on User's Feedback
1A: system will display the first record data and will exit
the program and when ever you recall that program 2nd time
from the same session then system will display the second
record data and subsequent calls from the same screen will
display the second record data only.
2A: SETONLR will close the files and then close the program
and exit the program but RETURN will remain open the opened
file and exit the program with out closing the files.
3A: Once if you define the file as primary file then system
will seuqnetial read the all the recods in that program and
then only it will exit the program, if you use the primary
file alone ina program you need to use the SETONLR because
system it self will close the file once it reaches the EOF.
4A: deleting the deleted space in the sense we are trying
reuse the space of deleted records for that we can it using
the command called "Reorganize Physical File Mbr (RGZPFM)".
5A: we can use the OVRDBF & POSDBF commands in CL
| Is This Answer Correct ? | 8 Yes | 0 No |
Once RETURN excute then system exit the program, second
DSPLY will never excute, in first DSPLY EMPNO system will
show the first record value.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / jai
thanks Venkatesh.But one thing in 1 ques..
1. What was the output on both DSPLY EMPNO.
2. Whether after RETRN the DSPLY statement will execute or Not?
3. If its execute after RETRN, What was the Output on 2nd
DSPLY EMPNO
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / srikanth
After executing RETURN statement, any statements next to RETURN will also be executed. In the above code program will display two records. When you call same program again from same session next two records will be displayed. If program is coded with LR indicator, next call of same program will also display same first two records.
| Is This Answer Correct ? | 0 Yes | 4 No |
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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."
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