diff --git a/WEGA/contrib/ingres/dbs/src/sys/unlock.c b/WEGA/contrib/ingres/dbs/src/sys/unlock.c
new file mode 100644
index 0000000..3f2ce84
--- /dev/null
+++ b/WEGA/contrib/ingres/dbs/src/sys/unlock.c
@@ -0,0 +1,25 @@
+# include	"../conf/gen.h"
+# include	"../h/lock.h"
+
+main(argc, argv)
+int	argc;
+char	*argv[];
+{
+	register int		pid;
+
+	if (AAsequal(argv[1], "dbserver"))
+		pid = 0;
+	else if ((pid = atoi(argv[1])) < 2)
+	{
+		printf("UNLOCK: no process specified\n");
+		exit(1);
+	}
+	AALOCKREQ.l_db = pid;
+	AAlockdes = open(AA_DBS_LOCK, 1);
+	AAsyslock(A_ABT, M_DB, 0L, 0L);
+	sync();
+}
+
+AApageflush()
+{
+}