Which is better LF or OPNQRYF ? When should we use LF and
when should we use OPNQRYF ?
- 5 Answers
- 17652 Views
- HCL, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / vaiv20
It depends on the situation. Whenever any update, delete or
add is performed on file, access data paths to the logicals
are also updated hence if data is very huge in the file it
will take toll on system response time for doing the
update, delete or add operation.Hence take a call based on
this consideration. Also, if you want to create a view on a
physical file for not so frequent use its better to use
OPNQRYF.
| Is This Answer Correct ? | 14 Yes | 0 No |
Answer / reecha
If the no. of records to be filtered is less then OPNQRYF
is better option then LF becoz it create temporaray ODP
only & overhead on system is less.
if teh records to be filtered out are more ten LF sud be
created
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / adarsh
It depends on the frequency of accessing the records from
physical file. If records are huge and frequency of
accessing them is high then go for LF , but if records are
huge or less but Frequency is minimal then go for QPNQRYF
as it does not create a permanent object.
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / arun
according to me
lf is used for upd(non joint lf),view,
in this path is permanent it occupies more spaces
openqryf is used for temp path ,
it can access 5 files
so opqryf is better
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / m nihar
OPNQRYF is better then LF. Coz , OPNQRYF creates temporary
access path but LF creates permanent objects.
When we use all fields of your file then we use OPNQRYF for
temporaryly use. But when we use some choosen fields from
file then we use LF.
| Is This Answer Correct ? | 2 Yes | 10 No |
Define an Interactive Job?
why we use binding directory and service pgm
Show 2 ways to convert a date from YYMMDD to MMDDYY (MULT operation not acceptable)
How do I release jobs in queue and change a job destination to a different printer. I know wrkjobq but I have not worked with As/400 for a while,so_can someone help me?
what are the different opcodes available in rpg for database access ?
what key word is used when screen is re-display?
What is the difference between a Physical File & a Logical?
28 Answers Accenture, ACS, IBM,
How many record formats can you have in a Physical file and in a Logical file ?
Hi.can any body give me the code for this quesiton please.Because i dont have to try to enter the code in to the AS/400 server.Please can anybody give the answer for this question with complete code? A smple RPLE pgm which accepts the starting number and ending number as parameter.It then has to count all the odd numbers b/w the accepted range of numbers and display the results/ Ex:if the input parameters are 11 and 30 the result should be 10(11,13,15,17,19,21,23,25,27,29) Please explain and give me the complete code?
How many MONMSG commands can declare in a CL program?
CAN WE INSERT FIELD IN PHYSICAL FILE BY USING OPNQRYF?
How can the user implicitly open and close the files in RPG program ?
RPG400 
