Hi,
we have a Mac app that uses CoreData which internally uses SQLite. Some of
the queries are not expressible within CoreData, so we send them manually
using the sqlite library that comes with Mac OS X. Now some of our users
have reported that their database file got corrupted and after some
On 2014/06/05 13:21, Lasse Jansen wrote:
Hi,
we have a Mac app that uses CoreData which internally uses SQLite. Some of
the queries are not expressible within CoreData, so we send them manually
using the sqlite library that comes with Mac OS X. Now some of our users
have reported that their
On Thu, Jun 5, 2014 at 7:21 AM, Lasse Jansen la...@lasselog.com wrote:
Hi,
we have a Mac app that uses CoreData which internally uses SQLite. Some of
the queries are not expressible within CoreData, so we send them manually
using the sqlite library that comes with Mac OS X. Now some of our
On 5/06/2014, at 11:21 pm, Lasse Jansen la...@lasselog.com wrote:
Hi,
we have a Mac app that uses CoreData which internally uses SQLite. Some of
the queries are not expressible within CoreData, so we send them manually
using the sqlite library that comes with Mac OS X. Now some of our users
Unfortunately CoreData is closed source and is distributed as part of the
Mac OS X SDK so there is no way to update it.
2014-06-05 13:33 GMT+02:00 RSmith rsm...@rsweb.co.za:
On 2014/06/05 13:21, Lasse Jansen wrote:
Hi,
we have a Mac app that uses CoreData which internally uses SQLite.
Thanks for the suggestion, I think I'll try this. I probably need to detect
the kind of error and use some retry-mechanism ...
2014-06-05 13:35 GMT+02:00 Richard Hipp d...@sqlite.org:
On Thu, Jun 5, 2014 at 7:21 AM, Lasse Jansen la...@lasselog.com wrote:
Hi,
we have a Mac app that uses
Thanks, spawning another process is a good idea.
Filing a bug with Apple is probably not going to work, they don't encourage
accessing a CoreData managed database without going through CoreData.
2014-06-05 13:49 GMT+02:00 David Empson demp...@emptech.co.nz:
On 5/06/2014, at 11:21 pm, Lasse
On 5 Jun 2014, at 1:16pm, Lasse Jansen la...@lasselog.com wrote:
Thanks, spawning another process is a good idea.
If you're going to continue to use SQLite in your own code on a Mac I encourage
you to include the amalgamation files (.h and .c) rather than referring to a
dynamic library. That
Hi,
We use sqlite in our industrial devices. But sometimes the database
corrupted. We could not find the problem , how it can be possible to
corrupt the database. It is possible to see powerless on devices and OS
crashes cause of electromagnetic noises, rarely. I attached some of
corrupted
Özgür KELEŞ ozgur.ke...@enmos.com wrote:
We use sqlite in our industrial devices. But sometimes the database
corrupted. We could not find the problem , how it can be possible to
corrupt the database.
http://www.sqlite.org/lockingv3.html
Section 6.0 How To Corrupt Your Database Files
--
Igor
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On 01/05/2011 11:05 AM, Greg Morehead wrote:
Any insights on how this could occur would be greatly appreciated.
http://www.sqlite.org/lockingv3.html#how_to_corrupt
Roger
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Comment:
Due to attach limits this is the part 001 of the file!
- Israel Lins Albuquerque israel...@polibrasnet.com.br escreveu:
Attached has a database corrupted.
We use the version 3.6.23.1 in wince.
the command:
pragma integrity_check;
show many errors and
Duplicate pk was
Due to attach limits this is the part 002 of the file!
- Israel Lins Albuquerque israel...@polibrasnet.com.br escreveu:
Attached has a database corrupted.
We use the version 3.6.23.1 in wince.
the command:
pragma integrity_check;
show many errors and
Duplicate pk was
Attached has a database corrupted.
We use the version 3.6.23.1 in wince.
the command:
pragma integrity_check;
show many errors and
Duplicate pk was founded using:
SELECT u_pkey, count(*)
FROM tp_gpsdata
GROUP BY u_pkey
HAVING count(*) 1
;
this returns only 1 record
SELECT *
FROM
Max Vlasov ha scritto:
On Fri, Dec 18, 2009 at 6:27 PM, Gianandrea Gobbo go...@solari.it wrote:
Gianandrea, I once had an experience with fixing a modified code that led to
database disk image malformation. If you can reproduce the bug with a
comparatively few number of steps, I'd recommend
On 21 Dec 2009, at 8:00am, Gianandrea Gobbo wrote:
At this stage, I cannot think of an applicative bug that leads to this
kind of corruption, where the database results always in the same size.
The only time I ever saw a number of files all truncated to the same length,
the fault was in
I also using 2.8, but i wondering why your database has 200 kb from the
beginning. my databases have only 3 or 4 kb's. But at my host if i am
using sqlite queries which are $db- like, i get the same error. funny
thing, but the database is not malformed...
On 18 Dec 2009, at 3:27pm, Gianandrea
I'm using sqlite (2.8) on an embedded product, running a Linux kernel.
I'm experiencing sometimes a database corruption, and listing some
tables contents gets me a SQL error: database disk image is malformed.
Ok, there can be many reasons for this, but the strange thing that
puzzles me is that
On 18 Dec 2009, at 3:27pm, Gianandrea Gobbo wrote:
I'm using sqlite (2.8) on an embedded product, running a Linux kernel.
I'm experiencing sometimes a database corruption, and listing some
tables contents gets me a SQL error: database disk image is malformed.
Ok, there can be many reasons
On Fri, Dec 18, 2009 at 6:27 PM, Gianandrea Gobbo go...@solari.it wrote:
I'm using sqlite (2.8) on an embedded product, running a Linux kernel.
I'm experiencing sometimes a database corruption, and listing some
tables contents gets me a SQL error: database disk image is malformed.
Ok, there
On Mon, Oct 12, 2009 at 8:56 PM, McClellen, Chris
cmcclel...@weather.com wrote:
What is your synchronous set to? Full? FYI If you are using .NET data
providers, it is set to Normal by default.
Normal or Off, but no power failure was involved. (Yes,
System.Data.SQLite is used)
If it is not
Subject: Re: [sqlite] Corrupted database
On Oct 14, 2009, at 12:42 AM, McClellen, Chris wrote:
But it does happen and we can reproduce it. Hard killing a thread is
essentially equivalent to turning off the power.
We have always assumed that it is different. When you write data to
a file, the write
corrupted?
Dan.
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Dan Kennedy
Sent: Tuesday, October 13, 2009 12:35 AM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Corrupted database
On Oct 13, 2009
Of Dan Kennedy
MC Sent: Wednesday, October 14, 2009 12:36 AM
MC To: General Discussion of SQLite Database
MC Subject: Re: [sqlite] Corrupted database
MC On Oct 14, 2009, at 12:42 AM, McClellen, Chris wrote:
But it does happen and we can reproduce it. Hard killing a thread is
essentially
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Teg
Sent: Wednesday, October 14, 2009 12:10 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Corrupted database
Hello Chris,
It's always a mistake to use
We get a 2 returned when we check synchronous. I think that's the
enum for full. We do not explicitely kill any threads, but when we
decide to reboot or shutdown, we call ExitProcess(0) without stopping
any DB threads, and I'm sure this isn't very healthy.
Andrew
This communication (including
On Oct 14, 2009, at 2:51 PM, Reusche, Andrew wrote:
We get a 2 returned when we check synchronous. I think that's the
enum for full. We do not explicitely kill any threads, but when we
decide to reboot or shutdown, we call ExitProcess(0) without
stopping
any DB threads, and I'm sure
...@sqlite.org] On Behalf Of Teg
MC Sent: Wednesday, October 14, 2009 12:10 PM
MC To: General Discussion of SQLite Database
MC Subject: Re: [sqlite] Corrupted database
MC Hello Chris,
MC It's always a mistake to use TerminateThread. Even Microsoft warns
MC against it.
From MSDN:
MC - If the target
Discussion of SQLite Database
Subject: Re: [sqlite] Corrupted database
On Oct 14, 2009, at 2:51 PM, Reusche, Andrew wrote:
We get a 2 returned when we check synchronous. I think that's the
enum for full. We do not explicitely kill any threads, but when we
decide to reboot or shutdown, we call
On Oct 14, 2009, at 2:59 PM, McClellen, Chris wrote:
I think the issue is :
Thread 1 does exitprocess/terminateprocess (or process.kill, or
anything like that)
Thread 2 does write() -- the write I believe can be interrupted when
partially complete in these cases (only part of the blocks
Subject: Re: [sqlite] Corrupted database
On Mon, Oct 12, 2009 at 8:56 PM, McClellen, Chris
cmcclel...@weather.com wrote:
What is your synchronous set to? Full? FYI If you are using .NET data
providers, it is set to Normal by default.
Normal or Off, but no power failure was involved. (Yes
On Wed, Oct 14, 2009 at 6:06 PM, Dan Kennedy danielk1...@gmail.com wrote:
The problem I think may be people using TerminateThread(); that's how
you hard kill a thread. It seems that can interrupt an I/O
operation --
ie an operation that writes more than one cluster at a time. Meaning,
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Corrupted database
On Oct 13, 2009, at 1:56 AM, McClellen, Chris wrote:
What is your synchronous set to? Full? FYI If you are using .NET
data
providers, it is set to Normal by default.
If it is not set to full, I have seen
Hello,
for a few months we have been occasionally getting corrupted databases
in the field. So far we were unable to acquire any of them from our
customers, but this week I finally got hold of one. Output from
pragma integrity_check is included below.
The schema is the following:
CREATE VIRTUAL
-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Filip Navara
Sent: Monday, October 12, 2009 12:38 PM
To: General Discussion of SQLite Database
Subject: [sqlite] Corrupted database
Hello,
for a few months we have been occasionally getting corrupted databases
failure. That's the theory, anyway.
Dan.
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Filip Navara
Sent: Monday, October 12, 2009 12:38 PM
To: General Discussion of SQLite Database
Subject: [sqlite] Corrupted
Hi,
We have performance issues with SQLite running on our file system (remote FS
using Atomic Write Sector).
In fact we are limited with the number of write by second allowed by our
file system, let’s say we have 10 write/s
After a series of benchmarks the log file (journal) seems to be the
It's very dificult decision. I'm prefer to use some callback function
for logging all queries. But I don't know how to realise this callback
- trace and profile callbacks can't show query string with variables
values.
2008/8/11, Dennis Cote [EMAIL PROTECTED]:
Alexey Pechnikov wrote:
Can I get
Alexey Pechnikov wrote:
Can I get full log of sql statements for to sent it other network or store to
outher device?
Alexey,
You may want to read http://www.sqlite.org/cvstrac/wiki?p=UndoRedo for
an example of using triggers to generate SQL to modify a database. This
example is used
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Alexey Pechnikov wrote:
Maybe sqlite3_trace() or sqlite3_profile() can help with what you're
looking for here.
Unfortunately sqlite3_trace isn't that useful as it only tells you the
text of the sql statement but not any bound parameters. The way
В сообщении от Saturday 26 July 2008 10:23:57 Roger Binns написал(а):
Alexey Pechnikov wrote:
Maybe sqlite3_trace() or sqlite3_profile() can help with what you're
looking for here.
Unfortunately sqlite3_trace isn't that useful as it only tells you the
text of the sql statement but not any
В сообщении от Friday 25 July 2008 03:40:22 Roger Binns написал(а):
Alexey Pechnikov wrote:
Is any way to repair corrupted database?
From a theoretical point of view the only way to repair a corrupted
database is if there are multiple redundant copies of data or of
generating that data.
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Alexey Pechnikov wrote:
May be on FS layer?
I specifically said VFS which is SQLite functionality - see
http://www.sqlite.org/c3ref/vfs.html and
http://www.sqlite.org/c3ref/io_methods.html
Which FS can help me for this? I'm using ext3 FS now on
В сообщении от Friday 25 July 2008 12:16:39 Roger Binns написал(а):
Alexey Pechnikov wrote:
May be on FS layer?
I specifically said VFS which is SQLite functionality - see
http://www.sqlite.org/c3ref/vfs.html and
http://www.sqlite.org/c3ref/io_methods.html
Thanks, last link may be helpful
On Fri, Jul 25, 2008 at 5:23 AM, Alexey Pechnikov [EMAIL PROTECTED]
wrote:
Database servers such as Oracle or PostgreSQL have transactions log and
restore log.
Those logs are effectively duplicates of the data or ways of
reconstructing the data. SQLite has a transaction log for the
В сообщении от Friday 25 July 2008 16:32:26 Derrell Lipman написал(а):
Can I get full log of sql statements for to sent it other network or
store to
outher device?
Maybe sqlite3_trace() or sqlite3_profile() can help with what you're
looking for here.
Thanks!
Hello!
Is any way to repair corrupted database? May be I have archive copy of
database and corrupted this pages - can I get correct pages and merge their
with archive database?
P.S. I have no corrupted database now but this question is important for me.
Best regards, Alexey.
В сообщении от Thursday 24 July 2008 20:48:08 Alexey Pechnikov написал(а):
Hello!
Is any way to repair corrupted database? May be I have archive copy of
database and corrupted this pages - can I get correct pages and merge their
with archive database?
P.S. I have no corrupted database now
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Hash: SHA1
Alexey Pechnikov wrote:
Is any way to repair corrupted database?
- From a theoretical point of view the only way to repair a corrupted
database is if there are multiple redundant copies of data or of
generating that data. Since SQLite doesn't do
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