Hello,
You need to give more information on the problem.
Is that a SQL SERVER 2012 R2 ?
On which machine the Bonita Server is running ?
Did you install the JDBC driver for SQL SERVER ?
Did you install the XA transaction in SqlServer ? https://msdn.microsoft.com/en-us/library/aa342335.aspx
Else, contact Bonitasoft expertise to help you to configure a Bonita on a SQL Server environment
Bonitasoft empowers development teams with Bonita, the open-source and extensible platform to solve the most demanding process automation use cases. The Bonita platform accelerates delivery of complex applications with clear separation between capabilities for visual programming and for coding. Bonita integrates with existing solutions, orchestrates heterogeneous systems, and provides deep visibility into processes across the organization.