Answer Posted / katiyar
As I mentioned above RRN (Relative Record Number) may be a
cause of "Session and Device Error". So In program code, at
display(EXFMT) subfile code, check the value of RRN. If is
is zero and you are making on the SFLDSP indicator *On or it
is un-conditional and doing display subfile. Then it will
give you the same error.So to avoid this situation you can
code in the way it mentioned below.
C If (RRN <= *Zeros)
C Eval *In32 = *OFF
C Else
C Eval *In32 = *ON
C EndIf
Where *In32 is SFLDSP indicator in Subfile code.
------------------OR-------------------
C If (RRN > Zeros)
C EXFMT SFLCTL (Subfile Control Display)
C EndIf
Both ways can be choose to avoid RRN related error.
==========================================================
Except the RRN, There are literally hundreds of other things
that can cause a "session or device error," and each has
exactly one "right" solution.For e.g. there may be chances
that you have not declared the keyword 'SFILE' i.e
SFILE(subfile rcdfmt name : RRN) while declaring
display(subfile) file in F-specs of your program. If so then
one can get the "session or device error".
Therefore, when you get a "session or device error," look at
the job log. In the job log will be a message that will
tell you exactly what the problem is. And also understand
all in better way, one should understand subfile programming
first.
| Is This Answer Correct ? | 14 Yes | 0 No |
Post New Answer View All Answers
how do you use commitment control in rpg?
1. If there are two programs using same file and 2 users are using the file at the same time and what can be done to allow them both to access? 2. How can remove lock from the file for accessing it by both users?
what is the necessary keyword needed to scroll subfile records?
What is the diff bw PF/LF Name and their Record format name? what is restriction in record format then file name?
can any one help in hawkeye and turnover or any change management system plzzzzz or send the documents to my mail id :gvsp.as4@gmail.com
Explain mdt?
Please tell me how to read the records from a file with load an array of size with error conditions(The logic answer for this question is ARR is array of 99 elements Z-ADD 0 IDX *LOVAL SETLL FILE READ FILE 99 *IN99 DOWEQ *OFF IDX ANDLT 99 ADD 1 IDX MOVE FIELD ARR,IDX READ FILE 99 ENDDO).So,Please give me the complete of this code.
is this a rpg channel?
how can I tell when to replace the array?
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 ment by record level identifier?
give an eg of ACQ-(ACQUIRE),BIT OFF,BIT ON,DEALLOC,DUMP,FEOD,FORCE,MHHZO,MHLZO,MHLLZO,MLHZO,REL,RESET,TESTZ,TESTB,TESTN----GIVE SMALL EXAMPLE TO THE OPCODES...TO UNDERSTAND FUNCTIONING...........
When it is desirable to describe files Internally?
How can we override a file during runtime in rpg?
which program rpg or cl is efficent to update a transaction onto a database file and why ?
