Data ware house error

Hi All,

Any idea with the below error....Environment SCOm 2007 R2 CU7.

"Data Warehouse maintenance mode synchronization process failed to write data to the Data Warehouse database. Failed to store data in the Data Warehouse. The operation will be retried.
Exception 'SqlException': Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding."

Tushar