RPGIII Program Locks

I take an option 2 on customized menu on our AS/400 box , which calls an RPG 
III program.
  There is nothing much special in this program which can may nt be a reason to 
lock so many files.
  But once I run the option , come out and see  WORKJOB & 14. Display open 
files, if active, it gives below number of locks.
  The list of locks is very big(only part of the list is shown below), Can some 
one throw light how to go and trouble shoot this problem.
  I have also pasted a portion of the program , I didnt see any special in this 
program or subsequent called programs that could throw these many locks.
  Any pointers are greatly appreciated.
   
   
   
   
   
   
   
   
   
                       Member/                                                  
File       Library    Device     Scope      Activation Group                   
QDUI80     QSYS       QPADEV001T *ACTGRPDFN 0000000002 *DFTACTGRP              
QDPGMRMN   QSYS       QPADEV001T *ACTGRPDFN 0000000002 *DFTACTGRP              
CTLFIL     LIBAIG     CTLFIL     *ACTGRPDFN 0000000002 *DFTACTGRP              
CTLDEF     LIBAIG     CTLDEF     *ACTGRPDFN 0000000002 *DFTACTGRP              
MENU       C90ENG     QPADEV001T *ACTGRPDFN 0000000002 *DFTACTGRP              
SYSPRM     C90FILES   SYSPRM     *ACTGRPDFN 0000000002 *DFTACTGRP              
SECMNU     PROENG     SECMNU     *ACTGRPDFN 0000000002 *DFTACTGRP              
ACTMNU     C90FILES   ACTMNU     *ACTGRPDFN 0000000002 *DFTACTGRP              
ACTLOG     LIBAIG     ACTLOG     *ACTGRPDFN 0000000002 *DFTACTGRP              
PRASTE     LIBAIG     PRASTE     *ACTGRPDFN 0000000002 *DFTACTGRP              
RISKTE     LIBAIG     RISKTE     *ACTGRPDFN 0000000002 *DFTACTGRP              
 PRASEI     LIBAIG     PRASEI     *ACTGRPDFN 0000000002 *DFTACTGRP    
 RISKEI     LIBAIG     RISKEI     *ACTGRPDFN 0000000002 *DFTACTGRP    
 PRASED     LIBAIG     PRASED     *ACTGRPDFN 0000000002 *DFTACTGRP    
 RISKED     LIBAIG     RISKED     *ACTGRPDFN 0000000002 *DFTACTGRP    
 PRASEC     LIBAIG     PRASEC     *ACTGRPDFN 0000000002 *DFTACTGRP    
 RISKEC     LIBAIG     RISKEC     *ACTGRPDFN 0000000002 *DFTACTGRP    
 PRATNT     LIBAIG     PRATNT     *ACTGRPDFN 0000000002 *DFTACTGRP    
 PPPTNT     LIBAIG     PPPTNT     *ACTGRPDFN 0000000002 *DFTACTGRP    
 PRASSA     LIBAIG     PRASSA     *ACTGRPDFN 0000000002 *DFTACTGRP    
 RISKSA     LIBAIG     RISKSA     *ACTGRPDFN 0000000002 *DFTACTGRP    
 PRASPS     LIBAIG     PRASPS     *ACTGRPDFN 0000000002 *DFTACTGRP  
  ==========================================================
  I take a option 2 from a menu this calls an RPGIII program.
_____________________________________________________________
 SELEC#    IFEQ '2'                    
 SELEC#    OREQ '4'                    
           MOVE '1'       WFLAG2  1    
           END                         
==========================
  SELEC#    IFEQ '2'                   
  SELEC#    OREQ '4'                   
            MOVE '1'       WFLAG2  1   
                                       
==============================
 WFLAG2    IFEQ '1'               
 *IN30     IFEQ '0'               
           MOVE PPARM#    PPARM   
           MOVE WKSTN#    WKSTN   
                                  
            Z-ADD*ZEROS    PCOPY              
            MOVE *BLANKS   PFILE              
            MOVEL'YN989  ' PFILE              
            CALL '@PROP'  PROPT              
  CMD01     IFEQ '1'                          
            SETON                     30      
            END                               
            END                               
            END                               
                                              
===========================================
WFLAG2    IFEQ '1'                   
          MOVEL'RM8008' MSGID#      
          ELSE                       
          MOVEL'RM8007' MSGID#      
          END                        
          ELSE                       
WFLAG2    IFEQ '1'                   
          MOVEL'RM8006' MSGID#      
          END                        
          END                   
                   
   
  Thanks,
                                             

                
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