[freetds] [FreeTDS] connection pool

Xiaobiao Yin xiaobiaoyin at outlook.com
Wed Aug 31 20:53:08 EDT 2016

Hi Frediano

    Thank you really.

    In my case, I have to insert the rows to table one by one.

    For the connection pooling, I got the information from the User Guide.


   The FreeTDS connection pool currently only supports TDS version 4.2.

   If FreeTDS 1.0 supports protocol 7.2 with some limitations, where can I find the

limitation's description, so that I can identify if it will affect my case.

  BTW, is there any sample code for connection pooling?

Thanks in advance


From: FreeTDS <freetds-bounces at lists.ibiblio.org> on behalf of Frediano Ziglio <freddy77 at gmail.com>
Sent: Wednesday, August 31, 2016 9:18 PM
To: FreeTDS Development Group
Subject: Re: [freetds] [FreeTDS] connection pool

2016-08-31 11:35 GMT+01:00 Xiaobiao Yin <xiaobiaoyin at outlook.com>:
> Hi Experts
>     I use FreeTDS (linux) to communicate with a SQL server 2005 in Windows,
> and tried to use [dbcmd() and dbsqlexec()]  100 times to insert 1 item to database tables.
>    The performance is that one insert statement consumes about 2~3ms.
>     I know there is a so called Connection pool, but it only support TDS 4.2 while SQL server need TDS 7.2.
>    So in order to optimize the performance, I may need to open 2 or more connections, it is a little hard to
> control these connections.
>    My question is that are there some ways to optimize the performace.
> The target should be 1ms per 1 insert statement.
> Any suggetions are welcome.
> Thanks
> Eric

It's not clear if the problem is application or connections.
If you have one application that needs to insert rows into a table
it's better to batch the inserts instead of using a query for each
If you have multiple process each needing to connect to database and
insert a row then would be better to use a connection pooling. The
connection pooling included in FreeTDS 1.0 supports protocol 7.2 with
some limitations.

FreeTDS mailing list
FreeTDS at lists.ibiblio.org
FreeTDS Info Page - ibiblio<http://lists.ibiblio.org/mailman/listinfo/freetds>
The FreeTDS mailing list hosts discussions of all things FreeTDS. That includes help of all kinds, as well as development issues. This is list recommended reading for ...

More information about the FreeTDS mailing list