[COBOL400-L] Read same file

[cobol400-l@xxxxxxxxxxxx]

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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