2013-09-03T21:34:18.800+05:30 [03612 info 'utilvpxdVdb'] [VpxdVdb::SetDBType] Logging in to DSN: VMware vCenter with username
2013-09-03T21:34:18.800+05:30 [03612 error 'utilvpxdVdb'] [VpxdVdb::SetDBType]: Database error: ODBC error: (IM002) - [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
2013-09-03T21:34:18.800+05:30 [03612 error 'Default'] Error getting configuration info from the database
That looks like a not properly configured System DSN or an issue in the registry for the database part.