How to set hidden parameter in Oracle

Dear experts,

I'm trying to set hidden parameter in Oracle 12.2 Production Environment

alter system set '_min_undosegs_for_parallel_fptr'=0 scope=both;

ORA-00922:...

SQL> alter system set "_min_undosegs_for_parallel_fptr" = 0 scope=both;

alter system set "_min_undosegs_for_parallel_fptr" = 0 scope=both

ORA-02065

alter system set "_min_undosegs_for_parallel_fptr"=0 scope=spfile;

ORA-02065:

SQL> show parameter pfile

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

spfile string path to spfile

How could I set this parameter in Primary and Standby?

Thanks,