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.