Re: Read same file

Hello.

Your PGMA is reading the file the fastes way it can be done, if your 
intention is to read trough the whole file sequentially.

Your PGMB defines the file as indexed with dynamic access.  If you are 
going to read one and one record by key, this is the way to define the 
file.  But we don't see any file access in PGMB, only a definition.

PGMB calls PGMC, and it is the same here, we don't see any programmed file 
access, only the definition of the file.

Execution time will higly depend upon the way you use open/close, and the 
way you read the file by key.  You probably don't have to worry about your 
sequential read in PGMA, but consentrate on PGMB/PGMC. 


Mvh.

Geir Kildal
TietoEnator AS





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[COBOL400-L] Read same file






Hello,
 
I am new to the AS400.  I have 3 programs that using the same file but
different Access mode.

       IDENTIFICATION DIVISION. 
       PROGRAM-ID.  PGMA. 
       :
       SELECT FILEA ASSIGN TO DATABASE-FILEA 
           FILE STATUS IS STATUS-A 
           ACCESS MODE IS SEQUENTIAL 
           ORGANIZATION IS SEQUENTIAL. 
       :
       10-READ-A.
           READ FILEA.
           IF STATUS = "00"
              CALL "PGMB" USING PARM1
              Go To 10-READ-A.
       10-READ-A-X. EXIT.

       IDENTIFICATION DIVISION. 
       PROGRAM-ID.  PGMB. 
       :
       SELECT FILEA ASSIGN TO DATABASE-FILEA 
           FILE STATUS IS STATUS-A 
           ACCESS MODE IS DYNAMIC 
           ORGANIZATION IS INDEXED 
           RECORD KEY IS EXTERNALLY-DESCRIBED-KEY. 
       :
       CALL "PGMC" USING PARM2.

       IDENTIFICATION DIVISION. 
       PROGRAM-ID.  PGMC. 
       :
       SELECT FILEA 
           ASSIGN TO DATABASE-FILEA 
           FILE STATUS IS STATUS-A 
           ACCESS MODE IS DYNAMIC 
           ORGANIZATION IS INDEXED 
           RECORD KEY IS EXTERNALLY-DESCRIBED-KEY. 


PGMA is read FILEA one by one.
My problem is the process time for complete the program PGMA is too long.
Could someone help me, how the 
accelerate the process .

rgds
Agus R

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