libdb_cxx-5.1.so: cannot open shared object file:

#/home/app/bin/bitcoin-0.15.0.1/src/bitcoind
/home/app/bin/bitcoin-0.15.0.1/src/bitcoind: error while loading shared libraries: libdb_cxx-5.1.so: cannot open shared object file: No such file or directory

1.检查libdb_cxx-5.1.so是否存在

#find / -type f -name "libdb_cxx-5.1.so"
/usr/local/lib/libdb_cxx-5.1.so
/usr/local/lib64/libdb_cxx-5.1.so
/usr/local/src/db-5.1.19/build_unix/.libs/libdb_cxx-5.1.so

2.将绝对路径添加到/etc/ld.so.conf.d/libdb-x86_64.conf文件

#echo "/usr/local/lib64/" >/etc/ld.so.conf.d/libdb-x86_64.conf

3.最后加载ldconfig

#ldconfig