Visio Service: the server failed to process the request

A user reports the following error when attempting to view a Visio web drawing file .

Open SharePoint Central Admin


PowerShell: First, look in the Service Applications list for the name of your Visio Service. Then execute this script to generate a list of service applications and their associated application pools:

Get-SPServiceApplication -Name "{Your Visio Service name}"

Note down the application pool associated with the Visio Graphics Service.  Then execute this script to see a list of application pools and their service accounts:

Get-SPServiceApplicationPool -Identity "{Your Application Pool Name}"

Provide SpdataAccess Role to App Pool Account on corresponding Content Database
server.


Step1 : Get the site collection Content database name
Step2 : Open SQL server ---> Select App Pool User ----> Properties---->User Mapping--->Select Content Database---->Select "SPdataAccess"




Ref :
http://alstechtips.blogspot.com/2014/05/sharepoint-2013-visio-service-server.html