Class "CodeIgniter\Database\oci8\Connection" not found

This error is show on my server Ubuntu
I have tested out a simple application and it´s ok the connection
But in the CI4 appear this message.
The driver has installed and the extension is active on php.ini
Anyone could show me another option?

Post your database configuration for the oracle connection in database.php. 
It also helps as you post the code from your simple working code.

public array $homologacao = [
    'DSN'          => '',
    'hostname'      => '(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = host)(PORT = 1521)))(CONNECT_DATA = (SERVICE_NAME = service)(SERVER=DEDICATED)))',
    'username'      => 'user',
    'password'      => 'pass',
    'database'      => '',
    'DBDriver'      => 'oci8',
    'DBPrefix'      => '',
    'pConnect'      => true,
    'DBDebug'      => true,
    'charset'      => 'utf8',
    'DBCollat'      => 'utf8_general_ci',
    'swapPre'      => '',
    'encrypt'      => false,
    'compress'      => false,
    'strictOn'      => false,
    'failover'      => [],
    'port'          => 1521,
    'numberNative'  => false,
];

In my local server(WAMP) it´s ok, the application work, only on new server ubuntu appear this error;


The simple code that work´s

$instancia = "(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = host)(PORT = 1521))(CONNECT_DATA = (SERVICE_NAME = service)))";

$conn = oci_connect('user', 'pass', $instancia);

if (!$conn) {
    $e = oci_error();
    trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}

$stid = oci_parse($conn, 'SELECT TIPO FROM tabela WHERE COD = 8002');
oci_execute($stid);

$row = oci_fetch_array($stid, OCI_ASSOC+OCI_RETURN_NULLS);
var_dump($row);exit();

There is no CodeIgniter\Database\oci8\Connection class,
but there is CodeIgniter\Database\OCI8\Connection class.

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper

DBDriver
Supported drivers: MySQLi, Postgre, SQLite3, SQLSRV, and OCI8.
https://www.codeigniter.com/user_guide/d...-of-values

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper

This solution solved my problem. Linux differentiates between uppercase and lowercase letters, and I hadn't paid attention to this when setting DBDriver = 'OCI8' in the configuration; now it worked. Thanks a lot for the help

There is no CodeIgniter\Database\oci8\Connection class,
but there is CodeIgniter\Database\OCI8\Connection class.