Step 1

Download Oracle Instant Client and SDK from Oracle:

Download files:

Basic Package (ZIP):

SDK Package (ZIP):

Step 2

Create new folders for Oracle Instant Client on server

    sudo mkdir /usr/lib/oracle

    sudo mkdir /usr/lib/oracle/21.6

    sudo mkdir /usr/lib/oracle/21.6/client64

Step 3

Extract files

    sudo cp /usr/lib/oracle/21.6/client64

    sudo cp /usr/lib/oracle/21.6/client64

    cd /usr/lib/oracle/21.6/client64

    sudo unzip

    sudo unzip

    sudo mv instantclient_21_6 lib

Step 4

Create symbolic link to the new Instant Client files:

    cd /usr/lib/oracle/21.6/client64/lib/    

    sudo ln -s (It may already exist, continue)

    sudo ln -s (It may already exist, continue)

Step 5

Edit/Create this file with the path to the lib (for LDCONFIG):

sudo echo /usr/lib/oracle/21.6/client64/lib > /etc/

Step 6

Update Dynamic Linker


Step 7

Install php-dev php-pear build-essential and libaio1

sudo apt-get install php-dev php-pear build-essential libaio1

Step 8

Update PECL to install OCI8 from it

sudo pecl channel-update

Install OCI8 from PCEL (desired version, default seems not to find it for me, i used php7.)

    sudo pecl install oci8 (php 8)

    sudo pecl install oci8-2.2.0  (php 7.)

During install it will require the path to Instant Client, write this:


At the end something like this should appear:

Build process completed successfully

Installing '/usr/lib/php/20190902/'

install ok: channel://

configuration option "php_ini" is not set to php.ini location

You should add "" to php.ini

Step 9

Load OCI8 into PHP

sudo echo "" >> /etc/php/7.4/cli/php.ini

Restart Apache

sudo systemctl restart apache2

Step 10

Add to mods-available

cd /etc/php/7.4/mods-available/

sudo nano oci.ini

Add this to the file:

extension =

Step 11

Create sym link to the created ini file

cd /etc/php/7.4/apache2/conf.d

sudo ln -s /etc/php/7.4/mods-available/oci.ini 20-oci.ini

Restart Apache

sudo systemctl restart apache2

Step 12 (Testing)

Check if OCI is loaded in PHP

php -i | grep oci

Should output something like this:


oci8.connection_class => no value => no value

oci8.default_prefetch => 100 => 100 => Off => Off

oci8.max_persistent => -1 => -1

oci8.old_oci_close_semantics => Off => Off

oci8.persistent_timeout => -1 => -1

oci8.ping_interval => 60 => 60

oci8.privileged_connect => Off => Off

oci8.statement_cache_size => 20 => 20


Based on a post from eSkiSo

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