Question:

On my linux system, I don't see the perldb man page with man, although it's present in $ANTELOPE/man/man3p/perldb.3p.

Answer:

Try looking at the file /etc/man.config (RedHat) or /etc/manpath.config (SuSE), and adding 3p and 3t to the list of sections (SECTION or MANSECT). Unfortunately, the many varieties of unix are not consistent in system configuration issues like this.