[freeRADIUS 3.0.11 : Error: Could not link driver rlm_sql_oracle: libclntsh.so.11.1: cannot open shared object file: No such file or directory

[Vincent MARCEL]

Hello dear radius users,

I have compiled radius 3.0.11 radius server from tarball downloaded at http://freeradius.org/
I have configured sql module, then at lauched I get this error :

Tue Feb  9 11:07:58 2016 : Error: Could not link driver rlm_sql_oracle: libclntsh.so.11.1: cannot open shared object file: No such file or directory
Tue Feb  9 11:07:58 2016 : Error: Make sure it (and all its dependent libraries!) are in the search path of your system's ld

Why that and how may I fix it ?

Best regards,
Vincent MARCEL