Service Name with _DTB suffix automatically added shown in alert.log

Hello,

We received a bunch of RMAN files from a customer in order to refresh one of our own environments.

Far from being a specialist of RMAN, I could after some struggling restore successfully these files into a database.

Of course the source DB name is not the same as our target one, so I had fun doing all proper renaming including using NID to rename the DB.

We're using ASM, to which I'm pretty new, to manage our datafiles, so I also had to relocate some files through RMAN.

Anyway, I think now it looks all good, the only strange thing I see in the alert.log file whenever I start the instance is this: