MAX_STRING_SIZE and standby

Hi,

I need to migrate to MAX_STRING_SIZE=EXTENDED my non-CDB DB + standby DB (Data Guard configuration).

I've read the note "Effect of Max_String_Size on Data guard (Doc ID 2010497.1)", but it is difficult to understand, because it say about PDB. So i have a question:

What i need to do at standby DB to enable max_string_size?

I assume to do at standby (after changes on primary):

- shutdown immediate

- alter system set max_string_size=extended scope=spfile;

- startup mount and apply redo logs: recover managed standby database ...

Is it enough?

Thank you!