SDI configuration in Oracle RAC enviroment

Query select * from m_remote_source_statistics where sub_component ='UI' and remote_source_name = 'name';

shows :

statistic_name statistic_value

40096,remote_source_processed_row_lsn 205059

40098,remote_source_current_row_lsn 205060,194554

In the Oracle RAC two node configuration, it appears the second node's redo logs are not being read. Is there a different configuration for SDI against Oracle RAC?