ld.so.1: ggsci: fatal: libclntsh.so.11.1:

This error comes when running ggsci on a linux or unix platform. Generally it is due to wrong setting of parameter LD_LIBRARY_PATH

$ echo $LD_LIBRARY_PATH

Edit the profile of the user and set  LD_LIBRARY_PATH to $ORACLE_HOME/lib

LD_LIBRARY_PATH=$GG_HOME:$LD_LIBRARY_PATH:$ORACLE_HOME/lib; export LD_LIBRARY_PATH