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Re: [Q] wait time /lob def

From: Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk>
Date: Fri, 30 Jan 2004 01:09:25 -0800
Message-ID: <F001.005DE618.20040130010925@fatcity.com>

Tanel,

Oracle 9-2 SQL Ref manual. Lob storage clause. The options for lobs on creation are:

    CACHE
    NO CACHE
    CACHE READS I don't think the last one appeared until 9.2 I was wrong about caching only writes, though - one of the joys of trying to quote everything from memory.

The CACHE READS option means that the
LOB goes into the buffer cache for reads, but not for writes. Pity, really, because I'd quite like to see it the other way around.

Regards

Jonathan Lewis
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> Jonathan,
>
> about which version are you talking here?
>
> > (You do also have the option in more recent versions
> > of refining the caching properties so the LOB can be
> > readcache only, writecache only or read/write cache
> > or nocache, I believe).
>
> I haven't found a way to explicitly set read or write caching for LOBs in
> system level, although I've done some research on them lately (on 10g as
> well). Or are you talking about OCI LOB caching here?
>
> Tanel.
>

-- 
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-- 
Author: Jonathan Lewis
  INET: jonathan_at_jlcomp.demon.co.uk

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Received on Fri Jan 30 2004 - 03:09:25 CST

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