System.Data.SqlClient.SqlException: Procedure or function 'wp_session_spLogout' expects parameter '@SessionKey', which was not supplied.

From the exception that you attached looks like the sessionkey value isn't been passed at times and it throws the error.


System.Data.SqlClient.SqlException: Procedure or function 'wp_session_spLogout' expects parameter '@SessionKey', which was not supplied

This is true. I am wondering why this is happening and how can I prevent this from happening. This error has some connection with the files below. Any ideas?  Thank you.
TimeOut2.aspx
TimeOut2.aspx.cs

This error is being generated by your web app and has nothing to do with the proc. So whenever this code runs on your website for whatever reason the actual parameter has not been set.

You will have to modify your webmethod to ensure the parameter is being passed to the proc always.

You can update your proc to allow for default values like below but I don't think this will solve your problem. You will still have to ensure that your code in your web method does always include the parameter which for some reason is not.

ALTER   PROCEDURE [dbo].[wp_session_spLogout]
      @SessionKey      VARCHAR(64) = ''
AS

if(@SessionKey = '') BEGIN SET @SessionKey = NULL END

if(@SessionKey IS NOT NULL)
BEGIN
 'do updates etc.
END

Do you think it has anything to do with the API call being used?

Do you have the code for the API call? My guess is that the API call passes a null to the procedure.

The only code I see for the API call is located in Timeout2.aspx.cs.

Any other suggestions? This error is occuring whenever the web method hits timeout2.aspx page.

Resolved