diff --git a/lib/sqlalchemy/engine.py b/lib/sqlalchemy/engine.py
index 79902446d6..f176e5a180 100644
--- a/lib/sqlalchemy/engine.py
+++ b/lib/sqlalchemy/engine.py
@@ -701,9 +701,6 @@ class SQLEngine(schema.SchemaEngine):
                 parameters = {}
         try:
             c.execute(statement, parameters)
-        except self.dbapi().OperationalError, e:
-            c.parent.invalidate()
-            raise exceptions.SQLError(statement, parameters, e)
         except Exception, e:
             raise exceptions.SQLError(statement, parameters, e)
         self.context.rowcount = c.rowcount