diff --git a/Src/Asp.NetCore2/SqlSeverTest/OracleTest/Demo/DemoO_Fastest.cs b/Src/Asp.NetCore2/SqlSeverTest/OracleTest/Demo/DemoO_Fastest.cs
index 6ad605035..f3cc9dbc1 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/OracleTest/Demo/DemoO_Fastest.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/OracleTest/Demo/DemoO_Fastest.cs
@@ -42,7 +42,8 @@ namespace OrmTest
                     }
                 }
             });
-        
+            //db.DbMaintenance.DropTable("TESTFAST11");
+            //db.DbMaintenance.TruncateTable<TestFAST11>();
             db.CodeFirst.InitTables<TestFAST11>();
             //db.Insertable<TestFAST11>(new List<TestFAST11>() {
             //  new TestFAST11(){  Date=DateTime.Now, Id=Guid.NewGuid()+"", Sex=1 , }
@@ -50,13 +51,14 @@ namespace OrmTest
             //db.Fastest<TestFAST11>().BulkCopy(new List<TestFAST11>() {
             //  new TestFAST11(){  Date=DateTime.Now, Id=Guid.NewGuid()+"", Sex=1 , }
             //});
-            var data = new List<TestFAST11>() {
-              new TestFAST11(){  Date=DateTime.Now, Id=Guid.NewGuid()+"", Sex=1  }
-            };
+        
             //db.Updateable(data).ExecuteCommand();
-            db.Fastest<TestFAST11>().BulkCopy(data);
-            var x = db.Queryable<TestFAST11>().ToList();
- 
+            for (int i = 0; i < 2; i++)
+            {
+                db.Fastest<TestFAST11>().BulkCopy(new List<TestFAST11> { new TestFAST11() { Date = DateTime.Now, Id = Guid.NewGuid() + "", Sex = 1 } });
+                var x = db.Queryable<TestFAST11>().ToList();
+                var updaterows = db.Fastest<TestFAST11>().BulkUpdate(x); 
+            }
         }
     }
 }
diff --git a/Src/Asp.NetCore2/SqlSeverTest/OracleTest/UnitTest/Main.cs b/Src/Asp.NetCore2/SqlSeverTest/OracleTest/UnitTest/Main.cs
index 02034efc6..0e75bd471 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/OracleTest/UnitTest/Main.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/OracleTest/UnitTest/Main.cs
@@ -34,6 +34,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            Bulk();
             CodeFirst();
             Updateable();
             Json();
diff --git a/Src/Asp.NetCore2/SqlSeverTest/OracleTest/UnitTest/UBulkCopy.cs b/Src/Asp.NetCore2/SqlSeverTest/OracleTest/UnitTest/UBulkCopy.cs
new file mode 100644
index 000000000..295db5037
--- /dev/null
+++ b/Src/Asp.NetCore2/SqlSeverTest/OracleTest/UnitTest/UBulkCopy.cs
@@ -0,0 +1,117 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OrmTest
+{
+    public partial class NewUnitTest
+    {
+        public static void Bulk()
+        {
+            Db.CodeFirst.InitTables<UnitIdentity1>();
+            Db.DbMaintenance.TruncateTable<UnitIdentity1>();
+            var data1 = new UnitIdentity1()
+            {
+                Name = "a",
+                Id = 1
+            };
+            var data2 = new UnitIdentity1()
+            {
+                Name = "b",
+                Id = 2
+            };
+            var data3 = new UnitIdentity1()
+            {
+                Name = "c",
+                Id = 3
+            };
+            Db.Fastest<UnitIdentity1>().BulkCopy(new List<UnitIdentity1>() {
+              data1
+            });
+            var list = Db.Queryable<UnitIdentity1>().ToList();
+            if (list.Count != 1 || data1.Name != list.First().Name)
+            {
+                throw new Exception("unit Bulk");
+            }
+
+            Db.Fastest<UnitIdentity1>().BulkCopy(new List<UnitIdentity1>() {
+              data2,
+              data3
+            });
+            list = Db.Queryable<UnitIdentity1>().ToList();
+            if (list.Count != 3 || !list.Any(it => it.Name == "c"))
+            {
+                throw new Exception("unit Bulk");
+            }
+            var xx=Db.Fastest<UnitIdentity1>().BulkUpdate(new List<UnitIdentity1>() {
+               new UnitIdentity1(){
+                Id=1,
+                 Name="222"
+               },
+                 new UnitIdentity1(){
+                Id=2,
+                 Name="111"
+               }
+            });
+            list = Db.Queryable<UnitIdentity1>().ToList();
+            if (list.First(it => it.Id == 1).Name != "222")
+            {
+                throw new Exception("unit Bulk");
+            }
+            if (list.First(it => it.Id == 2).Name != "111")
+            {
+                throw new Exception("unit Bulk");
+            }
+            if (list.First(it => it.Id == 3).Name != "c")
+            {
+                throw new Exception("unit Bulk");
+            }
+            Db.CodeFirst.InitTables<UnitIdentity111>();
+            Db.DbMaintenance.TruncateTable<UnitIdentity111>();
+            var count = Db.Fastest<UnitIdentity111111111>().AS("UnitIdentity111").BulkCopy(new List<UnitIdentity111111111> {
+              new UnitIdentity111111111(){ Id=1, Name="jack" }
+            });
+            if (count == 0)
+            {
+                throw new Exception("unit Bulk");
+            }
+            count = Db.Fastest<UnitIdentity111111111>().AS("UnitIdentity111").BulkUpdate(new List<UnitIdentity111111111> {
+              new UnitIdentity111111111(){ Id=1, Name="jack" }
+            });
+            if (count == 0)
+            {
+                throw new Exception("unit Bulk");
+            }
+            Db.CodeFirst.InitTables<UnitTable001>();
+            Db.Fastest<UnitTable001>().BulkUpdate(new List<UnitTable001> {
+              new UnitTable001(){   Id=1, table="a" }
+            });
+        }
+    }
+
+    public class UnitTable001
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+        public int Id { get; set; }
+        public string table { get; set; }
+    }
+
+    public class UnitIdentity111
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+    }
+    public class UnitIdentity111111111
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+        public int Id { get; set; }
+        public string Name { get; set; }
+    }
+    public class UnitIdentity1
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey = true)]
+        public int Id { get; set; }
+        public string Name { get; set; }
+    }
+}
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/SqlBuilder/OracleFastBuilder.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/SqlBuilder/OracleFastBuilder.cs
index 8851a9882..e8f78755b 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/SqlBuilder/OracleFastBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/SqlBuilder/OracleFastBuilder.cs
@@ -22,10 +22,11 @@ namespace SqlSugar
         {
             //await Task.FromResult(0);
             //throw new Exception("Oracle no support BulkUpdate");
+            var oldTableName = dt.TableName;
             var columns = this.Context.EntityMaintenance.GetEntityInfo<T>().Columns.Where(it => it.IsPrimarykey).Select(it => it.DbColumnName).ToArray();
-            dt.TableName = "T" + SnowFlakeSingle.instance.getID().ToString().Substring(4, 10);
-            var sql = this.Context.Queryable<T>().Where(it => false).Select("*").ToSql().Key;
-            await this.Context.Ado.ExecuteCommandAsync($"create global temporary table {dt.TableName} as {sql} ");
+            dt.TableName = "Temp" + SnowFlakeSingle.instance.getID().ToString();
+            var sql = this.Context.Queryable<T>().AS(oldTableName).Where(it => false).Select("*").ToSql().Key;
+            await this.Context.Ado.ExecuteCommandAsync($"create table {dt.TableName} as {sql} ");
             this.Context.DbMaintenance.AddPrimaryKeys(dt.TableName, columns);
             //var xxx = this.Context.Queryable<T>().AS(dt.TableName).ToList();
         }