diff -rpcd a/src/backend/main/main.c b/src/backend/main/main.c
*** a/src/backend/main/main.c	2013-12-02 09:17:05.000000000 +0900
--- b/src/backend/main/main.c	2013-12-05 16:24:51.000000000 +0900
*************** static char *get_current_username(const 
*** 58,63 ****
--- 58,68 ----
  int
  main(int argc, char *argv[])
  {
+ #ifdef WIN32
+ 	int			i;
+ 	bool		check_if_admin = true;
+ #endif
+ 
  	progname = get_progname(argv[0]);
  
  	/*
*************** main(int argc, char *argv[])
*** 159,168 ****
  		}
  	}
  
  	/*
  	 * Make sure we are not running as root.
  	 */
! 	check_root(progname);
  
  	/*
  	 * Dispatch to one of various subprograms depending on first argument.
--- 164,191 ----
  		}
  	}
  
+ #ifdef WIN32
+ 
+ 	/*
+ 	 * Allow execution of PostgreSQL by a user with administrative permissions
+ 	 * when -C, --describe-config, or --single is specified. The reasons are:
+ 	 * 1)With these switches, there is no fear of process hijack. 2)The DBA
+ 	 * wants to use them. 3)pg_ctl runs "postgres -C".
+ 	 */
+ 	for (i = 1; i < argc; i++)
+ 		if (strncmp(argv[i], "-C", 2) == 0 ||
+ 			strcmp(argv[i], "--describe-config") == 0 ||
+ 			strcmp(argv[i], "--single") == 0)
+ 			check_if_admin = false;
+ #endif
+ 
  	/*
  	 * Make sure we are not running as root.
  	 */
! #ifdef WIN32
! 	if (check_if_admin)
! #endif
! 		check_root(progname);
  
  	/*
  	 * Dispatch to one of various subprograms depending on first argument.