On 8 April 2014 04:19, Hin-Tak Leung <hintak.leung@xxxxxxxxx> wrote: > Strictly speaking, the maximum value of NLS_MAX_CHARSET_SIZE = 6 > is not attainable in the case of conversion to UTF-8, as that > requires the use of surrogate pairs, i.e. consuming two storage units. True that 6 is not attainable, wrong that it is with surrogate pairs. A surrogate pair encodes code-points from U+10000 to U+10FFFF, which is 4 bytes in UTF-8 (a moderate 2 per one UTF-16 code-unit). Multiplier 3 is enough for all cases of UTF-16/UCS-2 to UTF-8 conversion. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html