[TYPO3] typo3 database utf-8 conversion

[Thomas Oppelt]

Hi,

i would like to know about concepts of migration of a typo3 latin1 
database to utf-8.
i helped myself by taking a dump and converting it with iconv but that 
can not solve problems e.g. caused by serialized strings, where 
stringlength might differ after conversion.

is there something known like a standard-procedure to manage such a 
migration in typo3 context?

cheers
tom