Error: 17805, Severity: 20, State: 3 Invalid Buffer Received From Client.

Howdy Folks,
Our site has been experiencing this issue for a couple of months now.. Hopefully someone else can assist, as I’ve got to a point where I think issue lies within the application or a Microsoft bug. Web searches have reveled a number installations that have also had this error but its has not revealed an actual fix.

I understand this error code basically means data being returned to the client is getting either corrupted or the data is too large to fit into the buffer on the client side. Client in our case is the terminal server, here after called a application server

As the user base has increased form 5 to 20, I have noticed that the issue is occurring more frequently in comparison to when the company first started using the application /database. Its just about daily now...

The db server also has 8 other db's residing on it - but they are all less than 300 meg.

The attached PowerPoint doc has the trace info & the surrounding code for each process that has suffered a buffer error over a period of a week.

DB Server Environment: Win2000 SP4, SQL2000 SP3a, MDAC 2.7 SP1 refresh.
Application Environment: Written In house in VB.NET Framework 1.1 – setup as a published app on a terminal server – running windows 2000 SP4

Common features of the issue, that have been omitted from trace output for visibility reasons are:
-Involves 1 particular DB (thats accessed by VB app) & its developement db
-All connections are coming from 1 application server
-Issue does not relate to any particular site connecting to the application server using this application

I have reviewed & fixed several potential server side causes but this error still is occuring with in the environment:

MDAC versions must be common on application & server:
- Removed from equation by updating MDAC version on App server to be the same as DB Server: 2.7 SP1 Refresh

Network related
- Considered unlikely; we are also not experiencing network card errors on either server; also all db's would be experiencing connectivity errors.

Which leaves us with Application related options to review:
- Compilation error of application
- App parameter definitions to stored procedures are the correct data type
- Ensure values being passed do not exceed 4000 characters as that has also been known to create this error message
- I've asked the developer to review MS KB 827366 article, as it may be a valid test
- In regard to MSKB 832977 - I am not using pssdiag & have a later version of the MS Analyzer. But what I thought was interesting, is the statement that this problem occurs more frequently when an application submits a large remote procedure call (RPC) input buffer, especially when the RPC input buffer is greater than or equal to 8 KB. However, this problem may occur even if the input buffer is less than 4 KB
- A is using datatypes varchar & char - not nvarchar & nhar

Any assistance with this issue would be appreicated as server performance is being effected - these processes hang around for 1 - 5 mins before terminating (refer duration times in the powerpoint traces)

Thanks In advance

Suze.