Physical standby online redo logs issue

Hello Experts,

I do have concern in physical standby database where my redo logs are not present at OS but if i query it in the standby database , i can able to view its structure . Also i tried to add the log file manually but i couldnt error'ed out saying file already exists though i didnt find it in OS level . Let me say you the steps i followed for creating the standby database(10.2.0.5) version .

*Created the necessary parameters .(Since the primary and standby has the same filesystem layout i didnt use db_file_name_convert and log_file_name_convert parameter)