Hi,
We are having a problem with a database with NLS_LENGTH_SEMANTICS=CHAR parameter defined in spfile. There are some different Oracle products (BI Publisher, APEX...) and some third party products that use Oracle database. Everything was functioning fine n that database, but now i want to install Oracle Access Manager on this database. When i run RCU for OAM i get the following error:

I've found that the problem is because NLS_LENGTH_SEMANTICS is set to CHAR on instance level. So now i would like to change this to BYTE, but i am not sure how this new setting will reflect on the products previously installed on Oracle database.
The version of the db is 12c.
Regards,
Savo