On 28/9/21 6:59 pm, Mathias Zarick wrote:
Hi there,

I am wondering how it would be possible to use authentication using a secure 
external password store aka wallet with PDO OCI.

See Oracle external authentication and OCI_CRED_EXT in the underground php 
oracle manual.

and

https://docs.oracle.com/en/database/oracle/oracle-database/19/dbseg/configuring-authentication.html#GUID-803496D2-19C7-4F02-94EC-C13EDD8FB17B
(jump to chapter 3.2.9)


Following works fine with oci8:
$conn = oci_connect('/', '', $db, 'UTF8',OCI_CRED_EXT);

note the OCI_CRED_EXT!

But how can pass that option to a PDO OCI connection?
Following might be close, but does not work:

   $opt = [
       PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
       PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_NUM,
       'session_mode' => OCI_CRED_EXT,

];

   try{
       $conn = new PDO("oci:dbname=".$db.';charset=UTF8', "/","", $opt);
   }
   catch(PDOException $e){
       echo ($e->getMessage());
   }

Is it possible at all?

You can see in the PDO_OCI source code there is no reference to the OCI_CRED_EXT constant which is needed to tell the Oracle client libraries to use external authentication.

PR's are welcome.

For the moment stick with OCI8.  In general, native drivers (e.g OCI8) will be 
better than any of the PDO abstractions.

Chris



Thanks in Advance
Mathias Zarick

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