ACL

SQL> begin
DBMS_NETWORK_ACL_ADMIN.create_acl(
acl => '/sys/acls/AddressDoc.xml',
description=>'ACL for UTL_MAIL',
principal=>'STAT_CUSTGOV',
is_grant=>TRUE,
privilege=>'connect');
COMMIT;
End;
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PL/SQL procedure successfully completed.

SQL> BEGIN
DBMS_NETWORK_ACL_ADMIN.assign_acl (
acl => '/sys/acls/AddressDoc.xml',
host => '*');
COMMIT;
END;
/  2    3    4    5    6    7

PL/SQL procedure successfully completed.

SQL> BEGIN
        DBMS_NETWORK_ACL_ADMIN.ADD_PRIVILEGE (
          acl   => '/sys/acls/AddressDoc.xml',
          principal => 'STAT_CUSTGOV',
          is_grant  => TRUE,
          privilege => 'connect');
END;
/ 

PL/SQL procedure successfully completed.