diff --git a/Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs b/Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
index 77614e770..31ae780a9 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
@@ -216,7 +216,8 @@ namespace SqlSugar
                 this.Context.Updateable(dt)
                              .AS(tableName)
                              .Where($"{columnInfo.DbColumnName} is null ").ExecuteCommand();
-                columnInfo.IsNullable = false;
+                if(this.Context.CurrentConnectionConfig.DbType!=DbType.Oracle)
+                   columnInfo.IsNullable = false;
                 UpdateColumn(tableName, columnInfo);
             }
             return true;
diff --git a/Src/Asp.Net/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs b/Src/Asp.Net/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
index eabbb6d8b..1ee48905c 100644
--- a/Src/Asp.Net/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
@@ -318,8 +318,8 @@ namespace SqlSugar
                     //column remak
                     if (db.DbMaintenance.IsAnyColumnRemark(item.DbColumnName.ToUpper(), item.DbTableName.ToUpper()))
                     {
-                        db.DbMaintenance.DeleteColumnRemark(item.DbColumnName.ToUpper(), item.DbTableName.ToUpper());
-                        db.DbMaintenance.AddColumnRemark(item.DbColumnName.ToUpper(), item.DbTableName.ToUpper(), item.ColumnDescription);
+                        db.DbMaintenance.DeleteColumnRemark(this.SqlBuilder.GetTranslationColumnName(item.DbColumnName) , item.DbTableName.ToUpper());
+                        db.DbMaintenance.AddColumnRemark(this.SqlBuilder.GetTranslationColumnName(item.DbColumnName), item.DbTableName.ToUpper(), item.ColumnDescription);
                     }
                     else
                     {