1  –  int-ext-value

    A string literal or host variable containing the keyword
    'INTERNAL' or 'EXTERNAL'. These keywords can be in any case
    (uppercase, lowercase, or mixed case). If the value is set to
    EXTERNAL, then SQL starts a transaction before executing the
    procedure. If the value is set to INTERNAL, then SQL allows the
    procedure to start a transaction as required by the procedure
    execution.