加速链接服务器导入

Question

I have several processes that run nightly that imports data from a AS400 into SQL Server using Linked Server. Here is a sample:

truncate table TABLENAME

    insert into TABLENAME
    (
        BT_TID,
        BT_SEQ ,
        BT_DES ,
        BT_HRS ,
        BT_MOD ,
        BT_MSN ,
        BT_STK
    )
    select 
        BT_TID,
        BT_SEQ ,
        BT_DES ,
        BT_HRS ,
        BT_MOD ,
        BT_MSN ,
        BT_STK
    FROM OPENQUERY([ODBCSOURCE], 'select 
        BT_TID,
        BT_SEQ ,
        BT_DES ,
        BT_HRS ,
        BT_MOD ,
        BT_MSN ,
        BT_STK
     from XXXX.XXXX.TABLENAME')

Some of these processes take HOURS to run.

Is there a better way of doing this? I looked into BCP, but didn't understand it.

Answer 1

As heard from Microsoft, Linked Server is slow per nature (due to processing and.network limitation). If SSIS is installed on your SQL server it should be a better option.