The UNLOCK statement releases all record locks held by the run unit on a named file. 
                  
 
            
            
               General Format
 
               	  
               	  
 
               
              
            
            
               Syntax Rule
 
               	  
                
                  	 
                  - File-name must occur in the SELECT statement of the file control entry. 
                     	 
                  
  
            
            
               General Rules
 
               	  
                
                  	 
                  - The file referenced by file-name must already be opened with the OPEN statement. 
                     	 
                  
- The UNLOCK statement releases all record locks held by the run unit on a named file.