I just further verify the issue.
The problem appear only AFTER I restore the content server DB from source system.
The content repository can be created via OAC0 and set to 'online' using the new DB created with SWPM. (before I restore my DB)
So, the problem is the restored DB.
However, the restore process was succeed without any error show.
Is below version valid?
my scenario:
MaxDB 7.6 --> backup using MaxDB studio
Restore DB to MaxDB 7.9 also using MaxDB studio.
ERP system remain no changes.
Thanks.