diff --git a/Src/Asp.Net/OracleTest/Demos/1_Query.cs b/Src/Asp.Net/OracleTest/Demos/1_Query.cs
index 620345864..2596d279b 100644
--- a/Src/Asp.Net/OracleTest/Demos/1_Query.cs
+++ b/Src/Asp.Net/OracleTest/Demos/1_Query.cs
@@ -185,6 +185,13 @@ namespace OrmTest.Demo
         private static void Ado()
         {
             var db = GetInstance();
+
+
+            string spName = "PR_TEST";
+            var p1 = new SugarParameter("@O_RESULT", null, true);
+            p1.IsRefCursor = true;
+            var dt3 = db.Ado.UseStoredProcedure().GetDataTable(spName, p1);
+
             db.Ado.BeginTran();
             var t1 = db.Ado.SqlQuery<string>("select 'a'  from dual");
             var t2 = db.Ado.GetInt("select 1  from dual");
diff --git a/Src/Asp.Net/SqlSugar/Abstract/AdoProvider/AdoProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
index 41891ab39..f89c140d3 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
@@ -655,7 +655,10 @@ namespace SqlSugar
             {
                 foreach (var outputParameter in parameters.Where(it => it.Direction.IsIn(ParameterDirection.Output, ParameterDirection.InputOutput,ParameterDirection.ReturnValue)))
                 {
-                    var gobalOutputParamter = this.OutputParameters.Single(it => it.ParameterName == outputParameter.ParameterName);
+                    var gobalOutputParamter = this.OutputParameters.FirstOrDefault(it => it.ParameterName == outputParameter.ParameterName);
+                    if (gobalOutputParamter == null) {//Oracle bug
+                        gobalOutputParamter=this.OutputParameters.FirstOrDefault(it => it.ParameterName == outputParameter.ParameterName.TrimStart(outputParameter.ParameterName.First()));
+                    }
                     outputParameter.Value = gobalOutputParamter.Value;
                     this.OutputParameters.Remove(gobalOutputParamter);
                 }