diff --git a/Src/Asp.Net/SqlSugar/Realization/Kdbndp/SqlBuilder/KdbndpBuilder.cs b/Src/Asp.Net/SqlSugar/Realization/Kdbndp/SqlBuilder/KdbndpBuilder.cs
index a848c3a98..ef0c6a554 100644
--- a/Src/Asp.Net/SqlSugar/Realization/Kdbndp/SqlBuilder/KdbndpBuilder.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/Kdbndp/SqlBuilder/KdbndpBuilder.cs
@@ -90,6 +90,11 @@ namespace SqlSugar
                 return SqlTranslationLeft + name.ToUpper(IsUpper).TrimEnd('"').TrimStart('"') + SqlTranslationRight;
             }
         }
+        public override string GetUnionFomatSql(string sql)
+        {
+            return " ( " + sql + " )  ";
+        }
+
 
         /// <summary>
         /// 
diff --git a/Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleQueryBuilder.cs b/Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleQueryBuilder.cs
index bfc62d3b8..8d6adb5a0 100644
--- a/Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleQueryBuilder.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleQueryBuilder.cs
@@ -90,6 +90,7 @@ namespace SqlSugar
             if (this.GetGroupByString==null&&this.Take == 1 && this.Skip == 0&&oldOrderBy== "ORDER BY sysdate ") 
             {
                 result = $" {sql.ToString()} {(this.WhereInfos.Any()?"AND":"WHERE")}   ROWNUM = 1 ";
+                result = result.Replace(rowNumberString, " ");
             }
             if (ExternalPageIndex > 0)
             {