+ Go to https://help.ubuntu.com/community/Oracle%20Instant%20Client and download development packages:
+
+ For example:
+
+ > wget https://download.oracle.com/otn_software/linux/instantclient/19600/oracle-instantclient19.6-devel-19.6.0.0.0-1.x86_64.rpm
+ > sudo alien -i oracle-instantclient19.6-devel-19.6.0.0.0-1.x86_64.rpm
+
+ (probably basic & sqlplus is also needed)