Today my OwnCloud was due to an update to 8.0.3; As I did so, an SQL error hailed me:
Aktualisiere ownCloud auf Version 8.0.3. Dies könnte eine Weile dauern.
An exception occurred while executing ‘ DELETE FROM `oc_lucene_status` WHERE `fileid` IN ( SELECT `fileid` FROM ( SELECT `fileid` FROM `oc_lucene_status` GROUP BY `fileid` HAVING count(`fileid`) > 1 ) AS `mysqlerr1093hack` )': SQLSTATE[HY000]: General error: 1665 Cannot execute statement: impossible to write to binary log since BINLOG_FORMAT = STATEMENT and at least one table uses a storage engine limited to row-based logging. InnoDB is limited to row-logging when transaction isolation level is READ COMMITTED or READ UNCOMMITTED.
The update was unsuccessful. Please report this issue to the ownCloud community.