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Usando PL/SQL come si ottiene il contenuto di un file in un BLOB?

Per farlo interamente in PL/SQL, il file dovrebbe trovarsi sul server, situato in una directory che dovresti definire nel database. Crea i seguenti oggetti:

CREATE OR REPLACE DIRECTORY
    BLOB_DIR
    AS
    '/oracle/base/lobs'
/



CREATE OR REPLACE PROCEDURE BLOB_LOAD
AS

    lBlob  BLOB;
    lFile  BFILE := BFILENAME('BLOB_DIR', 'filename');

BEGIN

    INSERT INTO table (id, your_blob)
        VALUES (xxx, empty_blob())
        RETURNING your_blob INTO lBlob;

    DBMS_LOB.OPEN(lFile, DBMS_LOB.LOB_READONLY);

    DBMS_LOB.OPEN(lBlob, DBMS_LOB.LOB_READWRITE);

    DBMS_LOB.LOADFROMFILE(DEST_LOB => lBlob,
                          SRC_LOB  => lFile,
                          AMOUNT   => DBMS_LOB.GETLENGTH(lFile));

    DBMS_LOB.CLOSE(lFile);
    DBMS_LOB.CLOSE(lBlob);

    COMMIT;

END;
/