Install Berkeley DB-5.3.21 on Centos

Berkeley DB source file at Oracle. Install optional dependence: Tcl-8.6.0, OpenJDK-1.7.0.9, and Sharutils-4.13.3 (for the uudecode command)

sudo yum install tcl
sudo yum install java-1.7.0-openjdk java-1.7.0-openjdk-devel
sudo yum install sharutils

Install Berkeley DB

wget http://download.oracle.com/berkeley-db/db-5.3.21.tar.gz
tar zvxf db-5.3.21.tar.gz 
cd db-5.3.21/build_unix
# configure the program
../dist/configure --prefix=/opt --enable-compat185 --enable-dbm --disable-static --enable-cxx
make
# install
sudo make docdir=/usr/share/doc/db-5.3.21 install
sudo chown -v -R root:root /usr/bin/db_* /usr/include/db{,_185,_cxx}.h /usr/lib/libdb*.{so,la} /usr/share/doc/db-5.3.21

Questions:
when you run db_recover or other commands, you may encounter "libdb-5.3.so: cannot open shared object file: No such file or directory" Answer:

sudo /sbin/ldconfig