.
Best regards,
Jaco
On Saturday, November 3, 2012, Simon Slavin wrote:
>
> On 3 Nov 2012, at 12:26pm, Jaco Breitenbach
> <jjbreitenb...@gmail.com<javascript:;>>
> wrote:
>
> > My application consists of several indepent processes that must all
> access
&
Dear experts,
In my application performance is of critical importance. I've chosen to
preallocate a large contiguous block of memory for the page cache.
I make use of the following function to configure the page cache:
sqlite3_config(SQLITE_CONFIG_PAGECACHE, void*, int sz, int N);
The
Dear all,
In the WAL documentation (http://www.sqlite.org/wal.html) it is hinted that
the checkpoint operation, which is normally in the same thread if execution
as the database commit, could be moved to a separate thread or process. If
I were to run the checkpoint in a separate thread (using
I just wanted to make a correction:
On 26 September 2011 22:50, Jaco Breitenbach <jjbreitenb...@gmail.com>wrote:
> Now as the cache usage increases, I find that it finally caps at 3226.381
> MB (of the total 4096 MB) before the overflow size starts to increase. At
> an initial pa
Dear experts,
I have a question about the following cache related functions:
- sqlite3_config(SQLITE_CONFIG_PAGECACHE, B, S, P)
- sqlite3_status(SQLITE_STATUS_PAGECACHE_USED, C, H, 0)
- sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, C, H, 0)
-
On 19 September 2011 19:25, Simon Slavin <slav...@bigfraud.org> wrote:
>
> On 19 Sep 2011, at 7:13pm, Jaco Breitenbach wrote:
>
> > While on the topic of performance, I've performed a test in which new
> tables
> > were created within an active tra
Hi Christian,
Thanks for your response.
On 19 September 2011 16:45, Christian Smith <csm...@thewrongchristian.org.uk
> wrote:
> On Mon, Sep 19, 2011 at 02:42:42PM +0100, Jaco Breitenbach wrote:
> > Hi Simon,
> >
> > Thanks for the reply.
> >
> > On 19 S
, Simon Slavin <slav...@bigfraud.org> wrote:
>
> On 19 Sep 2011, at 2:42pm, Jaco Breitenbach wrote:
>
> > On 19 September 2011 13:23, Simon Slavin <slav...@bigfraud.org> wrote:
> >
> >> If you're actually concerned about filesize, then WAL mode is probably
Hi Simon,
Thanks for the reply.
On 19 September 2011 13:23, Simon Slavin <slav...@bigfraud.org> wrote:
> On 19 Sep 2011, at 10:13am, Jaco Breitenbach wrote:
>
> > CREATE TABLE T ( K varchar(22) PRIMARY KEY );
>
> Note that SQLite doesn't really do 'varchar'.
Dear experts,
I am creating a (simple) model of the disc and I/O usage of my SQLite
database so I can advise my customers on hardware requirements.
My database schema is very simple. It contains only one table with a single
column with a primary key:
CREATE TABLE T ( K varchar(22)
Dear all,
Any speculation on if and how the new code would affect inserts into an
indexed table?
Jaco
On 5 September 2011 09:15, Filip Navara wrote:
> On Mon, Sep 5, 2011 at 9:39 AM, Baruch Burstein
> wrote:
> > This is unrelated, but I have
Hi Gabriel,
Is there such a database that is both free and non-GPL that you can
recommend?
Jaco
On 9 August 2011 14:38, gabriel.b...@gmail.com <gabriel.b...@gmail.com>wrote:
> Heve you ever considere using a NOSQL database I think it would serve you
> better
>
> 2011/8/
Yes, but each input record also contains a timestamp that can be used to
identify the relevant table.
On 9 August 2011 14:43, Igor Tandetnik <itandet...@mvps.org> wrote:
> Jaco Breitenbach <jjbreitenb...@gmail.com> wrote:
> > I am building an application that filters out
a higher insert
rate.
I'd appreciate any feedback and comments on my suggested approach.
Regards,
Jaco
On 9 August 2011 14:13, Igor Tandetnik <itandet...@mvps.org> wrote:
> Jaco Breitenbach <jjbreitenb...@gmail.com> wrote:
> > Can anyone please tell me if there is a limit to
Dear experts,
Can anyone please tell me if there is a limit to the number of tables that
can be held in a single data file? I am considering an application that
will require a table for every minute in a day, i.e. 3600+ tables in a
single database or data file.
Regards,
Jaco
Are you missing a COMMIT perhaps?
On 7 July 2011 09:11, Stephan Beal wrote:
> On Thu, Jul 7, 2011 at 9:31 AM, James_21th wrote:
>
> > try {
> > $result=$dbh->exec("INSERT INTO tbl1(one,two) VALUES ('new1','new2')");
> > } catch(PDOExecption $e) {
>
Dear experts,
I've been trying to get SQLite compiled on an AIX 6.1 system. The configure
script that came with version 3.7.3 contains several exceptions for
different AIX versions, notably versions 4 and 5, but not 6. This means for
example that it is unable to generate a shared library
Hi Matthew,
sqlite> select * from a;
10|1
10|2
10|2
11|2
11|2
11|3
sqlite> select c.a, count(*) from (select distinct a, b from a) c group by
c.a;
10|2
11|2
Was that the result you were after?
Jaco
On 6 May 2011 15:03, Matthew Jones wrote:
> A simple query question
Dear experts,
My application has several data files open (one main, several other
attached) during normal operation. The journaling mode is WAL. I need to
perform an online backup of the data files without shutting down the
application.
What is the risk in simply copying all files, i.e. data
Dear experts,
My application makes use of several data files attached to the SQLite
database. Data files are attached on demand as they become necessary. I'm
experimenting with the WAL journalling mode as a speed/performance
optimisation. Unfortunately I'm having some difficulty setting the
Hi Dan,
I haven't changed the vacuum setting from the default, so it should be
0/NONE. Having just connected to it using the command line tool, the value
returned was 0 as well.
Jaco
On 8 April 2011 11:12, Dan Kennedy <danielk1...@gmail.com> wrote:
> On 04/08/2011 04:42 PM, Jaco Br
Dear experts,
My application makes use of a SQLite table with a unique index. During
normal processing, the unique index is used to ensure no duplicate records
are entered into the table. However, at regular intervals large numbers of
records (millions of records) that are already known to be
Dear Experts,
Is there an easy way to permanently disable the default AutoCommit using the
C API? The nature of my application is such that I don't know exactly where
a new transaction begins. Records are inserted into the database, and at
the end an explicit COMMIT is requested.
It seems that
Dear all,
I have compiled sqlite-autoconf-3070500 on a RedHat Linux machine. My
application is written in C, so uses the SQLite C interface.
At startup I connect to an admin datafile, and then attach 20 more datafiles
to the connection. After creating the initial connection (before attaching
Hi Dan,
That fixed the problem for me. Thanks a lot, much appreciated!
Best regards,
Jaco
On 23 March 2011 09:10, Dan Kennedy <danielk1...@gmail.com> wrote:
> On 03/23/2011 03:26 PM, Jaco Breitenbach wrote:
> > Dear experts,
> >
> > I have compiled sqlite-autocon
Dear experts,
I have compiled sqlite-autoconf-3070500 on a RedHat Linux machine. My
application is written in C, so uses the SQLite C interface.
At startup I connect to an admin datafile, and then attach 20 more datafiles
to the connection. After creating the initial connection (before
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