Re: What's the " latch "

Trister Yang wrote:
>
> I have read in oracle concept, but I really don't know what's the
> "latch" mean?
>
> I will appreciate for any reply!

A "lock" is what you typically take out on table rows to ensure that no-one writes to the same row at the same time...

A "latch" is a lock for memory - so that no-one writes to the same memory at the same time...

HTH

-- 
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Connor McDonald

http://www.oracledba.co.uk

"Some days you're the pigeon, some days you're the statue..."