diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
index bb7dbdbea..e4348114d 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
@@ -274,9 +274,12 @@ namespace SqlSugar
         #region Methods
         public override List<string> GetDbTypes()
         {
-            return this.Context.Ado.SqlQuery<string>(@"SELECT DISTINCT DATA_TYPE
+            var result= this.Context.Ado.SqlQuery<string>(@"SELECT DISTINCT DATA_TYPE
 FROM DBA_TAB_COLUMNS
 WHERE OWNER = user ");
+            result.Add("timestamp");
+            result.Add("timestamp");
+            return result.Distinct().ToList();
         }
         public override List<string> GetTriggerNames(string tableName)
         {