Hi,

If I have a system where I can not tolerate any unnecessary disk I/O
> can I turn off the lock check


Yes, see the documentation for FILE_LOCK=FS


> and any other processing if I have a log
> period of time without database access?


If you don't write to the database, then there are usually (*) no disk
writes, even with the default file locking mode.


> Does read only access remove
> the lock checking and any other background writes?
>

There are no background writes.

(*) one exception is queries with large result sets: those are buffered to
disk (sometimes as temporary tables). See the docs for details.

Regards,
Thomas

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