how to fix libdb.so.2: cannot open shared object file: No such file or directory error

you can see this error in http log file while starting the apache services.

libraries: libdb.so.2: cannot open shared object file: No such file or directory

To fix this issue implement the following solution

shutdown all oracle application services and as the root user create the following link.

ln -s /usr/lib/libgdbm.so.2.0.0 /usr/lib/libdb.so.2

Startup all oracle application services.