diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs
index fa9a4538d..e03dde7b3 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs
@@ -328,6 +328,7 @@ WHERE table_name = '" + tableName + "'");
                 columnInfo.DataType = "varchar2";
                 columnInfo.Length = 50;
             }
+            ConvertCreateColumnInfo(columnInfo);
             return base.AddColumn(tableName, columnInfo);
         }
         public override bool CreateIndex(string tableName, string[] columnNames, bool isUnique = false)
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
index 4c9ab912a..e4c1cf4f9 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using System.Data;
 using System.Data.Common;
 using System.Linq;
-using System.Text;
+using System.Text; 
 
 namespace SqlSugar
 {
@@ -358,6 +358,7 @@ WHERE table_name = '"+tableName+"'");
                 columnInfo.DataType = "varchar2";
                 columnInfo.Length = 50;
             }
+            ConvertCreateColumnInfo(columnInfo);
             return base.AddColumn(tableName,columnInfo);
         }
         public override bool CreateIndex(string tableName, string[] columnNames, bool isUnique=false)