fixes bug #9003

git-svn-id: http://desenvolvimento.rjconsultores.com.br/repositorio/sco/BD/FlyWay/trunk@68713 d1611594-4594-4d17-8e1d-87c2c4800839

src/db/migration/V20170508_1427__mantis9003.sql

@@ -0,0 +1,7 @@
+declare
+    object_exists exception;
+    pragma exception_init (object_exists , -00955);
+begin
+	execute immediate 'ALTER TABLE RUTA MODIFY (PREFIXO VARCHAR2(16))';	
+    exception when object_exists then null;
+end;