fixes bug#22407

dev: 
qua:

git-svn-id: http://desenvolvimento.rjconsultores.com.br/repositorio/sco/BD/FlyWay/trunk@107747 d1611594-4594-4d17-8e1d-87c2c4800839

src/db/migration/V20210707_1722__Mantis22407.sql

@@ -0,0 +1,7 @@
+declare
+    column_exists exception;
+    pragma exception_init (column_exists , -01430);
+begin
+    execute immediate 'ALTER TABLE RECARGA_CELULAR MODIFY (PRODUCT_ID VARCHAR2(20))';
+    exception when column_exists then null;
+end;