You can search Microsoft's support site for the error message and get a couple of hits.

This is from one of the articles (http://support.microsoft.com/default.aspx?scid=kb;en-us;256649):

"SQL Server allows multiple system process ID (SPID) connections to enlist in the same Microsoft Distributed Transaction Coordinator (MS DTC) transaction. The SQL Server limits "active" operations to a single SPID. Simultaneous operation attempts result in the following 3910 error message:

Error 3910: Transaction context in use by another session. "

Are you controlling transactions from within the ASP page?

-Mike


>Dear Michael Levy,
>
>Thank you for your help and reply. I think that error message return from SQL Server. SQL Server is Version 7 w/ SP4 and DTC is coming with NT 4.0 Option Pack. Both application are running on the same server with Windows NT 4.0. Do you have any idea? Looking forward to hear your reply soon and Thanks a lot!!
>
>Error Message on ASP:
>Microsoft OLE DB Provider for SQL Server
>error '80040e14'
>Transaction context in use by another session.
>/eas/ps/ps100bupd.asp, line 589
>Transaction Abort
>
>Best Regards,
>
>Justy Chow