diff --git a/SmartSQL/SmartSQL.Framework/Exporter/DmExporter.cs b/SmartSQL/SmartSQL.Framework/Exporter/DmExporter.cs
index a644e41a62bf0d752bb171fb4cfc1b1b67c6502b..6c7863eb36815a7598798b54d84bab9b59112e55 100644
--- a/SmartSQL/SmartSQL.Framework/Exporter/DmExporter.cs
+++ b/SmartSQL/SmartSQL.Framework/Exporter/DmExporter.cs
@@ -63,7 +63,7 @@ namespace SmartSQL.Framework.Exporter
         {
             #region MyRegion
             var dbClient = SugarFactory.GetInstance(SqlSugar.DbType.Dm, DbConnectString);
-            var dataBaseList = dbClient.Ado.SqlQuery<string>("select distinct object_name from all_objects where object_type = 'SCH';");
+            var dataBaseList = dbClient.Ado.SqlQuery<string>("SELECT NAME from SYSOBJECTS where TYPE$='SCH' and PID=UID()");
             var dbList = new List<DataBase>();
             dataBaseList.ForEach(x =>
             {
@@ -91,21 +91,18 @@ namespace SmartSQL.Framework.Exporter
             #region MyRegion
             var tables = new Tables();
             var tbSql = $@"SELECT
-                                    a.table_name AS NAME,
-                                    b.comments   AS Description
+                                    table_name AS NAME,
+                                    comments   AS Description,
+                                    a.Created     as CreateDate ,
+                                    ifnull(a.LAST_DDL_TIME,a.CREATED)     as ModifyDate
                             FROM
-                                    dba_tables AS a
-                            LEFT OUTER JOIN USER_TAB_COMMENTS b
-                            ON
-                                    a.table_name = b.table_name
+                             ALL_OBJECTS a LEFT JOIN
+                             ALL_TAB_COMMENTS b 
+                                on a.OBJECT_NAME=b.TABLE_NAME
                             WHERE
-                                    a.table_name!='HELP'
-                                AND a.table_name NOT LIKE '%$%'
-                                AND a.table_name NOT LIKE 'LOGMNRC_%'
-                                AND a.table_name!='LOGMNRP_CTAS_PART_MAP'
-                                AND a.table_name!='LOGMNR_LOGMNR_BUILDLOG'
-                                AND a.table_name!='SQLPLUS_PRODUCT_PROFILE'
-                                AND a.Owner = '{DbName}'";
+                                TABLE_TYPE='TABLE'
+                                AND a.OWNER = '{DbName}'
+                                AND b.OWNER = '{DbName}'";
             var dbClient = SugarFactory.GetInstance(SqlSugar.DbType.Dm, DbConnectString);
             var tableList = dbClient.SqlQueryable<DbTableInfo>(tbSql).ToList();
             tableList.ForEach(tb =>
@@ -141,14 +138,15 @@ namespace SmartSQL.Framework.Exporter
                                     a.Object_Name as Name       ,
                                     b.Comments    as Description,
                                     a.Created     as CreateDate ,
-                                    a.Created     as ModifyDate
+                                    ifnull(a.LAST_DDL_TIME,a.CREATED)     as ModifyDate
                             from
-                                    dba_objects         as a
-                            left join USER_TAB_COMMENTS as b
+                                    all_objects         as a
+                            left join ALL_TAB_COMMENTS as b
                             on
                                     a.Object_Name=b.table_name
                             where
-                                    OWNER      = '{DbName}'
+                                    a.OWNER      = '{DbName}'
+                                and b.OWNER      = '{DbName}'
                                 and Object_type='VIEW'";
             var dbClient = SugarFactory.GetInstance(SqlSugar.DbType.Dm, DbConnectString);
             var viewList = dbClient.SqlQueryable<DbTableInfo>(tbSql).ToList();
@@ -191,7 +189,54 @@ namespace SmartSQL.Framework.Exporter
         {
             #region MyRegion
             var columns = new Columns(500);
-            var viewList = _dbClient.DbMaintenance.GetColumnInfosByTableName(objectId);
+           // var viewList = _dbClient.DbMaintenance.GetColumnInfosByTableName(objectId);
+            var sql = $@"select
+                            distinct 0 														as TableId,
+                            A.Table_Name 													AS TableName,
+                            A.COLUMN_ID 													AS DbColumnId,
+                            A.column_name 													AS DbColumnName,
+                            A.data_type 													AS DataType,
+                            A.data_length 													AS Length,
+                            A.Data_Default 													AS DefaultValue,
+                            B.comments 														AS ColumnDescription,
+                            A.data_scale 													AS Scale,
+                            case when E.constraint_type = 'P' then true else false end 		AS IsPrimaryKey,
+                            case when A.nullable = 'Y' then true else false end 			AS IsNullable,
+                            case when ident.FLAG = 1 then true else false end 				AS IsIdentity
+                        from
+                            user_tab_columns AS A
+                            left join user_col_comments AS B on A.COLUMN_NAME = b.column_name
+                            left join (
+                                select
+                                    t1.column_name,
+                                    t1.table_name,
+                                    t2.constraint_type
+                                from
+                                    user_ind_columns AS t1
+                                    left join user_constraints AS t2 on t1.index_name = t2.index_name
+                            ) AS E on A.Table_Name = E.table_name and A.column_name = E.column_name
+                            LEFT JOIN (
+                                select
+                                    SO.NAME TABLE_NAME,
+                                    SCO.NAME COLUMN_NAME,
+                                    1 FLAG
+                                from
+                                    SYSCOLUMNS SCO
+                                    JOIN SYSOBJECTS SO ON SCO.ID = SO.id AND SO.SUBTYPE$ = 'UTAB'
+                                WHERE
+                                    SCO.INFO2 & 0x0001 = 1
+                                    and sf_get_schema_name_by_id(SO.SCHID) = '{DbName}'
+                                    and SO.NAME = '{objectId}'
+                            ) ident on ident.COLUMN_NAME = a.COLUMN_NAME
+                        where
+                            A.COLUMN_NAME = b.column_name
+                            and A.Table_Name = B.Table_Name
+                            and A.Table_Name = '{objectId}'
+                            and B.OWNER = '{DbName}'
+                        ORDER BY
+                            DbColumnId";
+            var dbClient = SugarFactory.GetInstance(SqlSugar.DbType.Dm, DbConnectString);
+            var viewList = dbClient.SqlQueryable<DbColumnInfo>(sql).ToList();
             viewList.ForEach(v =>
             {
                 if (columns.ContainsKey(v.DbColumnName))
@@ -255,7 +300,7 @@ namespace SmartSQL.Framework.Exporter
                                 'View' as Type,
                                 text as definition
                         from
-                                dba_Views
+                                All_Views
                         where
                                 owner = '{DbName}'
                             and view_name = '{objectId}'";
@@ -331,7 +376,21 @@ namespace SmartSQL.Framework.Exporter
 
         public override bool UpdateColumnRemark(Column columnInfo, string remark, DbObjectType objectType = DbObjectType.Table)
         {
-            throw new NotImplementedException();
+            var result = false;
+            if (objectType == DbObjectType.Table)
+            {
+                //result = _dbClient.DbMaintenance.AddColumnRemark("\""+columnInfo.ObjectName+"\"","\""+columnInfo.ObjectId+"\"",remark);
+                result = _dbClient.DbMaintenance.AddColumnRemark(columnInfo.ObjectName,columnInfo.ObjectId,remark);
+            }
+            if (objectType == DbObjectType.View)
+            {
+                throw new NotSupportedException();
+            }
+            if (objectType == DbObjectType.Proc)
+            {
+                throw new NotSupportedException();
+            }
+            return result;
         }
 
         public override bool UpdateObjectRemark(string objectName, string remark, DbObjectType objectType = DbObjectType.Table)