what is the equivalent keyword for CHAIN opcode ??
- 7 Answers
- 10866 Views
- TCS, I also Faced
- E-Mail Answers
Answer Posted / ajay
Setll + ReadE
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
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."
When we have a file with Duplicate records and I want to read the unique record from the file. For example a file containing Emp Name as 'Ram' and there are 3 entries of it. So how to read a unique record from File?
what is the procedure and explain about real time scenario.
what was the robotech rpg?
how do I preserve and clean the array?
what is the necessary keyword needed to scroll subfile records?
Assume 2 users are using the same file and first user updates some record in the file. Will the 2nd user will be able to see the updated record or not?
what is *place and *auto keyword in prtf ?plz explain
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
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
What is the difference between copybooks and subprocedures in as400?
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?
which program rpg or cl is efficent to update a transaction onto a database file and why ?
What is a record lock error?
explain sflclr, sflend, sfldlt, and sflcsrrrn?
