Description:
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I try all possibility but I'm pretty sure it's not possible to insert a file in an Oracle 12C database BLOB with PDO. All the other column have a value but my BLOB data length is always 0.

Table description:
Table: LOCI_DOCU

Column Name     id      Data type           Null?
ID	        1	NUMBER (10)	     N
FK_SH_ID	2	NUMBER (10)	     N
NOM_PHYS_DOCU	3	VARCHAR2 (150 Byte)  N
TIMB_MAJ	4	DATE	             N
USAG_MAJ	5	VARCHAR2 (12 Byte)   N
ADR_DOCU	6	VARCHAR2 (200 Byte)  Y
DOCU	        7	BLOB	             Y
TAIL_DOCU	8	NUMBER (13)	     Y
MIME_TYPE	9	VARCHAR2 (200 Byte)  Y

Test script:
---------------
$connection = $this->getConnection();

$sql = "INSERT INTO LOCI_DOCU 
        (fk_sh_id, nom_phys_docu, tail_docu, mime_type, docu) 
        VALUES (:FK, :NAMEFILE, :SIZEFILE, :MIMEFILE, EMPTY_BLOB()) 
        RETURNING DOCU INTO :FILELOB";

$stmt = $connection->prepare($sql);
        
$stmt->bindParam(":FK", 1, PDO::PARAM_INT); 
$stmt->bindParam(":NAMEFILE", 'MyFileName.jpg, PDO::PARAM_STR); 
$stmt->bindParam(":SIZEFILE", 278743, PDO::PARAM_INT); 
$stmt->bindParam(":MIMEFILE", "image/jpeg", PDO::PARAM_STR); 
$stmt->bindParam(":FILELOB", 50, PDO::PARAM_LOB);         

$stmt->execute();

Expected result:
----------------
Row insert with no error.
Get a data length of 278743 and be able to get the file working if downloaded.

Actual result:
--------------
Row insert with no error.
Data length of 0 of the BLOB in the database.
When downloading file, can not show result of the original inserted file, broken file with no content.