The journal file sounds like the wrong place to put it, the journal seems to
be the place to store information that needs writing to the database on
completion; storing some read-only information in the same file seems at
odds with its current purpose.

Perhaps a separate file(s) might be more appropriate to store this
information, this might resolve your file format issues but also improve
(but not eliminate) any performance considerations; perhaps the information
could even (optionally) be stored in memory to greatly improve things.

Dan



-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
Sent: 30 October 2007 17:15
To: [email protected]
Subject: Re: [sqlite] Your Concurrency Idea

"Dan Petitt" <[EMAIL PROTECTED]> wrote:
> Richard, i noticed this ticket in the system:
> http://www.sqlite.org/cvstrac/tktview?tn=2417,8
> 
> And wondered if its something that is getting any serious thought or 
> something that is just a faint possibility?
> 

Seems to be an incompatibly file format change, which more or less rules it
out for any consideration.  Also unaddressed in the proposal is how to
locate a particular page within the journal file without having to do
(performance killing) sequential scan of the possible very large file.

--
D. Richard Hipp <[EMAIL PROTECTED]>


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