Oracle Client Installation Error:
sqlplus64: error while loading shared libraries: libsqlplus.so …
This occurs because the required shared library files are not found.
Fix: Locate the extracted instantclient_11_2 folder, then copy the .so files inside to the lib directory:
cp /extracted-folder/libclntsh.so.11.1 /lib64/
cp /extracted-folder/*.so /lib64/
Download link: http://mirror.cnop.net/oracle/oracle_client.zip