Problem upgrading Typo3 from 4.5 to 6.2

[manfred]

Hello,

I'm having problems ugrading a customer Typo3-site from 4.5 to 6.2. The Upgrade Wizard is running into a loop at "Update database schema: Modify tables and fields" doing following:

ALTER TABLE cache_imagesizes ENGINE=InnoDB;
ALTER TABLE sys_history ENGINE=InnoDB;
ALTER TABLE sys_log ENGINE=InnoDB;
ALTER TABLE cache_typo3temp_log ENGINE=InnoDB;
ALTER TABLE cache_md5params ENGINE=InnoDB;
ALTER TABLE cache_treelist ENGINE=InnoDB;
ALTER TABLE fe_session_data ENGINE=InnoDB;
ALTER TABLE fe_sessions ENGINE=InnoDB;
ALTER TABLE cf_cache_hash ENGINE=InnoDB;
ALTER TABLE cf_cache_hash_tags ENGINE=InnoDB;
ALTER TABLE cf_cache_pages ENGINE=InnoDB;
ALTER TABLE cf_cache_pages_tags ENGINE=InnoDB;
ALTER TABLE cf_cache_pagesection ENGINE=InnoDB;
ALTER TABLE cf_cache_pagesection_tags ENGINE=InnoDB;
ALTER TABLE cf_cache_rootline ENGINE=InnoDB;
ALTER TABLE cf_cache_rootline_tags ENGINE=InnoDB;
ALTER TABLE cf_extbase_reflection ENGINE=InnoDB;
ALTER TABLE cf_extbase_reflection_tags ENGINE=InnoDB;
ALTER TABLE cf_extbase_typo3dbbackend_tablecolumns ENGINE=InnoDB;
ALTER TABLE cf_extbase_typo3dbbackend_tablecolumns_tags ENGINE=InnoDB;
ALTER TABLE cf_extbase_typo3dbbackend_queries ENGINE=InnoDB;
ALTER TABLE cf_extbase_typo3dbbackend_queries_tags ENGINE=InnoDB;
ALTER TABLE cf_extbase_datamapfactory_datamap ENGINE=InnoDB;
ALTER TABLE cf_extbase_datamapfactory_datamap_tags ENGINE=InnoDB;
ALTER TABLE cf_extbase_object ENGINE=InnoDB;
ALTER TABLE cf_extbase_object_tags ENGINE=InnoDB;

I think "InnoDB" is the problem why the upgrade wizards starts going into a endless loop!?