The client was unable to reuse a session with SPID XX, which had been reset for connection pooling. The failure ID is 23. This error may have been caused by an earlier operation failing.

Hello,

We have a recurring problem with one of our MS SQL Servers (Microsoft SQL Server 2012 (SP1) - 11.0.3128.0 (X64) ).

The error message from the applicatoion log:

Event Type: Error
Event Source: MSSQLSERVER
Event Category: (2)
Event ID: 18056

 The client was unable to reuse a session with SPID 94, which had been reset for conection pooling. This error may have been caused by an earlier operation failing. Check the error logs for failed operations immediately before this error message.

Anybody that knows anything why this error occurs?

Regards

Emre