Instalando oracle Instant Client Debian 9 Stretch

Resolvendo dependençias:

apt-get install libaio*

Copiar os seguintes pacotes RPM no site da oracle:

oracle-instantclient18.3-basic-18.3.0.0.0-1.x86_64.rpm
oracle-instantclient18.3-sqlplus-18.3.0.0.0-1.x86_64.rpm
oracle-instantclient18.3-devel-18.3.0.0.0-1.x86_64.rpm

alien -i oracle\ client/oracle-instantclient18.3-*

export LD_LIBRARY_PATH=/usr/lib/oracle/18.3/client64/lib
export PATH=$PATH:$LD_LIBRARY_PATH

criando pastas para o tns

mkdir /usr/lib/oracle/18.3/client64/network

mkdir /usr/lib/oracle/18.3/client64/network/admin

copie seu tnsnames.ora para essa pasta: /usr/lib/oracle/18.3/client64/network/admin

export TNS_ADMIN=/usr/lib/oracle/18.3/client64/network/admin/