Selects the locking implementation to be used. 
                  	  
               
            
 
            	 
             
               		
               Restriction: These tunables are supported for native COBOL only. 
                  		
               
 
               	 
              
            	 
            
               Syntax:
 
               		 
               		>>-----set lock_mode=---.-0-.-----------><
                        +-1-+
                        +-2-+
                        +-3-+ (UNIX) 
               	   
            	 
            
               Parameters:
 
               		 
               		
               
                   
                     			  
                     			  
                     			 
                      
                        				
                         
                           				  
                           | 0 | Uses the locking mechanism provided by Micro Focus COBOL V3.1 and earlier versions. | 
 
                        				
                         
                           				  
                           | 1 | Provides compatibility with DOS and OS/2 locking mechanisms. | 
 
                        				
                         
                           				  
                           | 2 | Provides interlanguage locking. This method causes record locks to lock the physical record. | 
 
                        				
                         
                           				  
                           | 3 
                              					  (applies to UNIX environments only) | Provides compatibility with C-ISAM version 5 and above. | 
 
                        			 
                      
                     		  
                  
                 
               	 
              
            	 
            
               Properties:
 
               		 
               		
                
                  		
                  
                      
                        			  
                        			  
                        			 
                         
                           				
                            
                              				  
                              | Default: | 1 (Windows) or 
                                 			  
                                 					 2 (UNIX) | 
 
                           				
                            
                              				  
                              | IDE equivalent: | None | 
 
                           			 
                         
                        		  
                     
                    
                  		
                 
               	 
              
            	 
             
            
           
         
         
Comments:
This tunable is only applicable if the File Handler configuration option FILEMAXSIZE is set to 4.