DB_FLASHBACK_RETENTION_TARGET for 1 pdb

Hi all,

we have a cdb with 5 pdbs, We are doing testing on 1 pdb ONLY. Is it possible to modify DB_FLASHBACK_RETENTION_TARGET to a large value on 1 PDB?

if not, any workaround?

Basically what I want is for the PDB:

alter system set db_flashback_retention_target to 28800000;

create restore point abc guarantee flashback database;

Appreciate your help!

a friend