/usr/share/man/man1/berkeley_db_svc.1.gz is in db-util 1:5.3.21~exp1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/berkeley_db5.3_svc.1.gz
/usr/share/man/man1/berkeley_db5.3_svc.1.gz