SAP Knowledge Base Article - Public

1474461 - Unknown Database Connector Error when connecting to a Dataset in a VS .NET application


  • Connecting to ADO .NET Dataset
  • May result in the following errors:

"Unknown Database Connector Error"
"Failed to retrieve data from the database"
"Query Engine Error 'C:\WINDOWS\TEMP\temp.....rpt"
"Log on failed..."
"Failed to open the connection. Details: [Database Vendor Code: 17]"


The data being passed in the datasset to the report is not in the format the report is expecting.


See the wiki Troubleshooting Issues with VS .NET Datasets and Crystal Reports


KBA , BI-DEV-NET , BI Software Development Kits (SDKs) - .NET or Other , How To


Crystal Reports 2008 V0 ; Crystal Reports 2008 V1 ; SAP Crystal Reports 10.0 ; SAP Crystal Reports 2011 ; SAP Crystal Reports XI ; SAP Crystal Reports XI R2