diff --git a/paramecio/cromosoma/databases/mysqldb.py b/paramecio/cromosoma/databases/mysqldb.py
index bcfe0a0..8634517 100644
--- a/paramecio/cromosoma/databases/mysqldb.py
+++ b/paramecio/cromosoma/databases/mysqldb.py
@@ -43,6 +43,8 @@ class SqlClass:
             
             self.connection[name_connection]=SqlClass.mypool.connect()
             
+            self.connection[name_connection].ping(True)
+            
             self.connected=True
             
         except: