$ grep blah /usr/include/*.h
grep: /usr/include/cxx_common.h: No such file or directory
grep: /usr/include/cxx_except.h: No such file or directory

$ ls -l /usr/include/cxx_*
lrwxrwxrwx  1 root root 16 Apr  7 22:06 /usr/include/cxx_common.h ->
db4/cxx_common.h
lrwxrwxrwx  1 root root 16 Apr  7 22:06 /usr/include/cxx_except.h ->
db4/cxx_except.h

$ ls -l /usr/include/db4
total 140
-r--r--r--  1 root root  5943 Mar  3 01:38 db_185.h
-r--r--r--  1 root root 33210 Mar  3 01:38 db_cxx.h
-r--r--r--  1 root root 80352 Mar  3 01:38 db.h

$ rpm -qf /usr/include/cxx_*
db4-devel-4.2.52-3.1
db4-devel-4.2.52-3.1

Version-Release number of selected component (if applicable):
db4-devel-4.2.52-3.1

How reproducible:
Always