If one runs Postgresql with fsync turned off in order to get better performance, is there a risk that the database internals will be damaged by a system crash? I realize that database discrepancies are possible, but I am referring to a failure where storage allocation gets messed up, or critical internal pointers get mangled, or something like that. What I have been able to find so far only addresses data discrepancies, which are something that we can live with (IF WE REALLY HAVE TO). Also, if one uses raw disk instead of files, will Postgresql work better with or without fsync? For that matter, how does Postgresql with fsync turned on compare performance/wise to Informix/Oracle for typical OLTP (95% read 5% write) work? Thanks in advance John Moore [EMAIL PROTECTED] ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster