what is the necessary command needed before OPNQRYF and why?
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Answer / abhishek bajpai
It is not mandatory to use OVRDBF(*Yes) before OPNQRYF. You
can still use OPNQRYF without OVRDBF.
But here the pupose of the OPNQRYF won't be solved.
Opnqryf creates its own Open data path and to share the
same data path in a program we use ovrdbf share(*yes), if
we do not use ovrdbf, then program will have its own ODP,
so it will read the file from begining on which query has
been run. So, OPNQRYF selected records will have no
importance.
So, we need to use CPYFRMQRYF command and put the selected
records in to runtime file and use that file to read in
program.
| Is This Answer Correct ? | 20 Yes | 2 No |
Answer / sumit gupta
Hi guddu............
OVRDBF is not mandatory before doing OPNQRYF. OVRDBF is
only used to share the open data path within the calling
program(i.e we can use the selected records from OPNQRYF in
further program whose call is being made after
OVRDBF+OPNQRYF).
But is we dont use the OVRDBF command then open data path
will not be shared and if we done the RCVF on that file
after OPNQRYF(WITHOUT OVRDBF) then the selected records
from OPNQRYF will not be used and this RCVF will process
all the records from that file.
OVRDBF command is used just to share the open data path (By
specifying SHARE(*YES).
We we want to use the selected records from the OPNQRYF in
our further programs which call after this CL then we can
use CPYFRMQRYF command to copy all the selected records
from this OPNQRYF and then RCVF on this new file(which has
got generated by CPYFRMQRYF).
| Is This Answer Correct ? | 11 Yes | 2 No |
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