Обсуждение: Where is the generic plan stored when using PREPARE statement?

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Where is the generic plan stored when using PREPARE statement?

От
Zhan Li
Дата:
Hi All,

According to the document, if a prepared statement is executed enough times, the server may eventually decide to save and re-use a generic plan rather than re-planning each time. My question is where the generic plan is saved? Is it stored in a file in disk? If yes, where is it located and what is the file name?

Thanks,
Zhan

Re: Where is the generic plan stored when using PREPARE statement?

От
Guillaume Lelarge
Дата:
On Tue, 2014-02-11 at 10:55 -0500, Zhan Li wrote:
> Hi All,
>
> According to the document, if a prepared statement is executed enough
> times, the server may eventually decide to save and re-use a generic plan
> rather than re-planning each time. My question is where the generic plan is
> saved?

In memory. There's actually no reason to put them on disk.

>  Is it stored in a file in disk? If yes, where is it located and what
> is the file name?
>
> Thanks,
> Zhan


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Guillaume
http://blog.guillaume.lelarge.info
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