[sqlite] SQL error: database is locked
Hi I am using sqlite in Fedora 9. Database created and done every thing perfectly. But when i going to test the DB via small transactions , inserting of records are failing. SQL error: database is locked DBD::SQLite::db commit failed: database is locked(5) at dbdimp.c line 218 at db_access.pl what would be the reason , is it about a permission issue or coding issue ? Please help Many Thanks, Shaine. __ Not happy with your email address?. Get the one you really want - millions of new email addresses available now at Yahoo! http://uk.docs.yahoo.com/ymail/new.html ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] problem compiling loadable extensions usingVisualStudio
>>
>> The first one isn't decorated, the second one is.
IT> Have you actually tried it? Build a DLL with this code, check with
IT> Dependency Walker. These two functions get exported under the following
IT> names:
IT> [EMAIL PROTECTED]
IT> ?PI_TestEx@@[EMAIL PROTECTED]
IT> The first name is decorated, the second is mangled (there's a difference
IT> between these two things, but it doesn't matter in this context where
IT> all you want is to get an exported name exactly as it is in your code).
IT> Igor Tandetnik
I see your point. As someone else posted though, you can control this
with the declaration.
/*
** Make sure we can call this stuff from C++.
*/
#ifdef __cplusplus
extern "C" {
#endif
__declspec(dllexport) HANDLE _cdecl PI_Test(const char* pszFilename)
{
return(NULL);
}
#ifdef __cplusplus
}
#endif
__declspec(dllexport) HANDLE _cdecl PI_TestEx(const char* pszFilename)
{
return(NULL);
}
Results in:
using "Dumpbin /exports" on the link library
?PI_TestEx@@[EMAIL PROTECTED] (void * __cdecl PI_TestEx(char const *))
PI_Test
using "Dumpbin /exports" on the dll
ordinal hint RVA name
40 1730 ?PI_TestEx@@[EMAIL PROTECTED] =
@ILT+1835(?PI_TestEx@@[EMAIL PROTECTED])
109 110E PI_Test = @ILT+265(PI_Test)
--
Best regards,
Tegmailto:[EMAIL PROTECTED]
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Re: [sqlite] problem compiling loadable extensions usingVisualStudio
Sherief N. Farouk <[EMAIL PROTECTED]> wrote: >> Have you actually tried it? Build a DLL with this code, check with >> Dependency Walker. These two functions get exported under the >> following names: >> >> [EMAIL PROTECTED] >> ?PI_TestEx@@[EMAIL PROTECTED] >> >> The first name is decorated, the second is mangled (there's a >> difference >> between these two things, but it doesn't matter in this context where >> all you want is to get an exported name exactly as it is in your >> code). >> >> Igor Tandetnik >> > > [Sherief N. Farouk] > > The decoration is due to the stdcall convention (APIENTRY). It's in > the form _FunctionName@. If you don't want that, > use cdecl. Well, yes, except that when you build a DLL to somebody else's specification, you are not free to choose which calling convention to use - you have to use one that the caller expects. On Windows, more often than not that means stdcall. Now, I don't actually know what calling convention SQLite expects a loadable extension to expose. If it's cdecl, then the OP should be all set with __declspec(dllexport). Igor Tandetnik ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] comments on db design
Gerry Snyder wrote: > steffen scheer wrote: >> Hey all >> >> I want to use sqlite as a storage engine for DNA sequence data. It is >> part of a workflow engine for DNA processing. I was wondering whether i >> chose the right db design. >> >> The db holds information about DNA sequences. Arranged in three tables. >> For every dna sequence one entry in all 3 tables will be made (1:1 >> Relation). Data will be inserted once, never deleted, but some >> attributes get updated. >> > To me, KISS (keep it simple, stupid) rules until its performance has > been shown to be unacceptable. > > Surely you can create a dummy db file with nonsense data of typical size > all in a single table and see whether it meets your needs. > > Keeping 2 or 3 tables in synch is not a difficult task, but it is a > potential source for error. You are right. I merged seq_desc_static and seq_desc_var. This was my initial design. In the majority of cases the first design is the best. KISS rules Steffen ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] problem compiling loadable extensions usingVisualStudio
> Have you actually tried it? Build a DLL with this code, check with > Dependency Walker. These two functions get exported under the following > names: > > [EMAIL PROTECTED] > ?PI_TestEx@@[EMAIL PROTECTED] > > The first name is decorated, the second is mangled (there's a > difference > between these two things, but it doesn't matter in this context where > all you want is to get an exported name exactly as it is in your code). > > Igor Tandetnik > [Sherief N. Farouk] The decoration is due to the stdcall convention (APIENTRY). It's in the form _FunctionName@. If you don't want that, use cdecl. - Sherief ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] comments on db design
steffen scheer wrote: > Hey all > > I want to use sqlite as a storage engine for DNA sequence data. It is > part of a workflow engine for DNA processing. I was wondering whether i > chose the right db design. > > The db holds information about DNA sequences. Arranged in three tables. > For every dna sequence one entry in all 3 tables will be made (1:1 > Relation). Data will be inserted once, never deleted, but some > attributes get updated. > To me, KISS (keep it simple, stupid) rules until its performance has been shown to be unacceptable. Surely you can create a dummy db file with nonsense data of typical size all in a single table and see whether it meets your needs. Keeping 2 or 3 tables in synch is not a difficult task, but it is a potential source for error. HTH, Gerry ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] problem compiling loadable extensions usingVisualStudio
Teg <[EMAIL PROTECTED]> wrote:
> /*
> ** Make sure we can call this stuff from C++.
> */
> #ifdef __cplusplus
> extern "C" {
> #endif
>
> __declspec(dllexport) HANDLE APIENTRY PI_Test(const char* pszFilename)
> {
>return(NULL);
> }
>
> #ifdef __cplusplus
> }
> #endif
>
> __declspec(dllexport) HANDLE APIENTRY PI_TestEx(const char*
> pszFilename) {
>return(NULL);
> }
>
>
> The first one isn't decorated, the second one is.
Have you actually tried it? Build a DLL with this code, check with
Dependency Walker. These two functions get exported under the following
names:
[EMAIL PROTECTED]
?PI_TestEx@@[EMAIL PROTECTED]
The first name is decorated, the second is mangled (there's a difference
between these two things, but it doesn't matter in this context where
all you want is to get an exported name exactly as it is in your code).
Igor Tandetnik
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Re: [sqlite] problem compiling loadable extensions using VisualStudio
Hello Igor,
Wednesday, July 9, 2008, 3:22:46 PM, you wrote:
IT> Shane Harrelson
IT> <[EMAIL PROTECTED]> wrote:
>> Without creating a .DEF file for MSVC to use, you need to tell it
>> which functions to "export".
>> The easiest way to do this is with the __declspec(dllexport).
IT> I assumed the OP was doing this. Anyway, __declspec(dllexport) always
IT> results in a decorated name being exported.
IT> Igor Tandetnik
IT> ___
IT> sqlite-users mailing list
IT> sqlite-users@sqlite.org
IT> http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
/*
** Make sure we can call this stuff from C++.
*/
#ifdef __cplusplus
extern "C" {
#endif
__declspec(dllexport) HANDLE APIENTRY PI_Test(const char* pszFilename)
{
return(NULL);
}
#ifdef __cplusplus
}
#endif
__declspec(dllexport) HANDLE APIENTRY PI_TestEx(const char* pszFilename)
{
return(NULL);
}
The first one isn't decorated, the second one is.
--
Best regards,
Tegmailto:[EMAIL PROTECTED]
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[sqlite] [ANN] IPLocation.db
Hello, IPLocation.db provides access to MaxMind's GeoLite City data as a - rather hefty- SQLite3 database. http://alt.textdrive.com/assets/public/Nanoki/IPLocation.100.zip (48.3 MB) Usage example: % sqlite3 IPLocation.db select location.start as start, location.end as end, city.name as city, region.name as region, region.code as region_code, country.name as country, country.code as country_code fromlocation joincity on city.id = location.city_id joinregion on region.id = city.region_id joincountry on country.id = region.country_id where location.start <= 2154863525 order bylocation.start desc limit 1 > 2154823680|2154889215|Princeton|New Jersey|NJ|United States|US Kudos to Igor Tandetnik for highlighting an efficient way of querying such data [1]. There is also a Lua [2] front-end for it: #!/usr/bin/env lua local IPLocation = require( 'IPLocation' ) local aLocation = IPLocation[ '128.112.155.165' ] print( aLocation.city, aLocation.region, aLocation.country ) > PrincetonNew Jersey United States Cheers, -- PA. http://alt.textdrive.com/nanoki/ [1] http://www.mail-archive.com/sqlite-users@sqlite.org/msg28622.html [2] http://www.lua.org/about.html ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] comments on db design
Hey all I want to use sqlite as a storage engine for DNA sequence data. It is part of a workflow engine for DNA processing. I was wondering whether i chose the right db design. The db holds information about DNA sequences. Arranged in three tables. For every dna sequence one entry in all 3 tables will be made (1:1 Relation). Data will be inserted once, never deleted, but some attributes get updated. First a static description table which holds information about a DNA sequence. The unique key, the source etc. Once inserted the data is never modified. CREATE TABLE seq_desc_static( seq_id INTEGER PRIMARY KEY file TEXT UNIQUE, sample TEXT, source TEXT, type INTEGER ); Second a static data table which holds the base sequence for every row from seq_desc_static, approx. 30 to 800 bases, and for each base two numerical values, a quality value (two digit) and a integer. This data will never be modified as well, but will be inserted after the seq_desc_static table is populated. This table gets huge. The table seq_data is just a data storage, query only be seq_id CREATE TABLE seq_data( seq_id INTEGER PRIMARY KEY, base TEXT, qual TEXT, call TEXT )'; During the processing of a dna sequence we will generate some additional infos for every row of seq_desc_static. These informations are kept in the third table. This table will be updated often during processing. CREATE TABLE seq_desc_var( seq_id INTEGER PRIMARY KEY, clear_range TEXT, classification INTEGER, history TEXT ) Most of the queries select rows from seq_desc_static and then join with the seq_data table to retrieve the data. My impression was that it is faster to put the big data in an extra table and to join. Am I right ? Is it a good solution to create an extra table for the updated data 'seq_desc_var' or should i put it in seq_desc_static table ? Selecting all data includes two joins ! That is expensive. Thanks for any comments ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] View with Dynamic Fields ?
I'm not thinking big picture here. I just want this one view. I am not planning on using it in other queries, I just don't want to have to either group lots of data together or parse data apart in all of my projects that will be using these tables. I suppose that is what I will be doing though. It's not a big deal - I was just wondering if a simpler solution was available. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Nicolas Williams Sent: Wednesday, July 09, 2008 2:41 PM To: General Discussion of SQLite Database Subject: Re: [sqlite] View with Dynamic Fields ? On Wed, Jul 09, 2008 at 12:32:27PM -0700, Andrea Connell wrote: > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Cote > > > > Andrea Connell wrote: > > > I am still holding a shred of hope for a trigger that can recreate > > > the view whenever the questions table is modified > > > > I wouldn't hold much hope for that. Triggers can only execute > > insert, update, delete, or select SQL statements. There is no way to > > execute a create table or create view command. > > Really? I never knew about that restriction before. Well, okay then. > Everybody is telling me it is impossible, and that's kind of what I > was thinking coming in to this so I guess that's that. Thanks! It's not just that it's impossible. Imagine you develop a dynamic SQL extension to SQLite (or any other open source SQL engine). Then what? How do you use the results of SQL queries with dynamic column counts in larger SQL queries? That's the hard part here. If you want "dynamic" column counts only for display purposes then you avoid that hard problem. But then, you might as well use group_concat() to get what you want, rather than work on extending the engine to support some notion of dynamic SQL. Nico -- ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] View with Dynamic Fields ?
On Wed, Jul 09, 2008 at 12:32:27PM -0700, Andrea Connell wrote: > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Cote > > > > Andrea Connell wrote: > > > I am still holding a shred of hope for a trigger that can recreate the > > > view whenever the questions table is modified > > > > I wouldn't hold much hope for that. Triggers can only execute insert, > > update, delete, or select SQL statements. There is no way to execute a > > create table or create view command. > > Really? I never knew about that restriction before. Well, okay then. > Everybody is telling me it is impossible, and that's kind of what I was > thinking coming in to this so I guess that's that. Thanks! It's not just that it's impossible. Imagine you develop a dynamic SQL extension to SQLite (or any other open source SQL engine). Then what? How do you use the results of SQL queries with dynamic column counts in larger SQL queries? That's the hard part here. If you want "dynamic" column counts only for display purposes then you avoid that hard problem. But then, you might as well use group_concat() to get what you want, rather than work on extending the engine to support some notion of dynamic SQL. Nico -- ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] View with Dynamic Fields ?
Really? I never knew about that restriction before. Well, okay then. Everybody is telling me it is impossible, and that's kind of what I was thinking coming in to this so I guess that's that. Thanks! Andrea -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Cote Sent: Tuesday, July 08, 2008 5:08 PM To: General Discussion of SQLite Database Subject: Re: [sqlite] View with Dynamic Fields ? Andrea Connell wrote: > > I am still holding a shred of hope for a trigger that can recreate the > view whenever the questions table is modified > I wouldn't hold much hope for that. Triggers can only execute insert, update, delete, or select SQL statements. There is no way to execute a create table or create view command. Dennis Cote ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] Subselect question
On Jul 9, 2008, at 3:23 PM, Shawn Wilsher wrote: > Hey all, > > Quick (and hopefully simple) question regarding subselects in a where > clause. Does sqlite cache the values of a subselect so it doesn't > have to run the query each time it evaluates a row? > > Example: > SELECT * > FROM foo > WHERE id NOT IN (SELECT id FROM bar) Yes it does. Assuming it is possible. If the subquery depends on the outer query that is not possible. Example: SELECT * FROM foo WHERE id NOT IN (SELECT id FROM bar WHERE x>foo.y) So in your original query, the subquery runs once and the results are cached. In the second query, the subquery runs once for each row in the result set. D. Richard Hipp [EMAIL PROTECTED] ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Subselect question
Hey all, Quick (and hopefully simple) question regarding subselects in a where clause. Does sqlite cache the values of a subselect so it doesn't have to run the query each time it evaluates a row? Example: SELECT * FROM foo WHERE id NOT IN (SELECT id FROM bar) Cheers, Shawn ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] problem compiling loadable extensions using VisualStudio
Shane Harrelson <[EMAIL PROTECTED]> wrote: > Without creating a .DEF file for MSVC to use, you need to tell it > which functions to "export". > The easiest way to do this is with the __declspec(dllexport). I assumed the OP was doing this. Anyway, __declspec(dllexport) always results in a decorated name being exported. Igor Tandetnik ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] problem compiling loadable extensions using Visual Studio
Without creating a .DEF file for MSVC to use, you need to tell it which functions to "export". The easiest way to do this is with the __declspec(dllexport). You should modify your source file and add the following before each public function: __declspec(dllexport) So for instance: int sqlite3_extension_init( becomes: __declspec(dllexport) int sqlite3_extension_init( Hope this helps. -Shane ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] problem compiling loadable extensions using Visual Studio
Jackson, Douglas H <[EMAIL PROTECTED]> wrote: > I'm trying to find the way to develop loadable extensions using > Visual Studio 2005. > > I've started by using the "half.c" extension from the documentation. > I'm compiling using this command: >cl /LD /I. /Fmhalf.map half.c > The compilation proceeds without producing errors. > I get a "half.dll", and the map file indicates that the > "sqlite3_extension_init" is exported. Use Dependency Walker (www.dependencywalker.com) to see what name the function got exported under. My educated guess is that it's exported under some sort of a decorated name (perhaps with a leading underscore). Use a .DEF file or /EXPORT linker option to export an undecorated name. Igor Tandetnik ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] problem compiling loadable extensions using Visual Studio
I'm trying to find the way to develop loadable extensions using Visual Studio 2005. I've started by using the "half.c" extension from the documentation. I'm compiling using this command: cl /LD /I. /Fmhalf.map half.c The compilation proceeds without producing errors. I get a "half.dll", and the map file indicates that the "sqlite3_extension_init" is exported. But when I try to load the extension, I get this: SQLite version 3.5.9 Enter ".help" for instructions sqlite> .load 'half.dll' The specified procedure could not be found. sqlite> I've seen many descriptions in the archives that look to be similar to this, but I haven't found any that specifically named the Microsoft compiler in the problem statement. Anyone have the secret sauce for developing an extension using the Microsoft tools? Thanks, Doug ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLITE_BUSY question
Oops, I RTFMed poorly. Thanks for the help. :-) Dennis Cote wrote: > George Ryan wrote: > >> Hello. I'm a first-time sqlite user, and I have a question. I'm using >> the C/C++ API as shown in the code below, and the sqlite3_step() >> function always seems to return SQLITE_BUSY for me. I'm not sure what I >> am doing wrong. I'm running on Ubuntu 8.04, and I don't have any >> multiple threads or clients or virus software running, so I can't see >> why the database would be locked. The database file gets created okay, >> but it's empty. >> >> Any suggestions? >> >> int rc = sqlite3_open_v2( "simple.db", &db_, SQLITE_OPEN_CREATE, 0 ); >> > > From the documentation at http://www.sqlite.org/c3ref/open.html you can > see that you are using an illegal flags argument to sqlite3_open_v2. You > need to or in the SQLITE_OPEN_READWRITE flag as well. > > int rc = sqlite3_open_v2( "simple.db", &db_, > SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0 ); > > HTH > Dennis Cote > > > ___ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > > -- George Ryan Senior Software Architect Akoostix Inc., Nova Scotia Canada 902-404-PING | www.akoostix.com "Simplicity and elegance are unpopular because they require hard work and discipline to achieve and education to be appreciated." - Edsger W. Dijkstra The information contained in this e-mail may contain confidential information intended for a specific individual and purpose. The information is private and is legally protected by law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or the taking of any action in reliance on the comments of this information is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone or return e-mail. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLITE_BUSY question
Nope, it's a local ext3 filesystem. D. Richard Hipp wrote: > On Jul 9, 2008, at 11:00 AM, George Ryan wrote: > > >> Hello. I'm a first-time sqlite user, and I have a question. I'm using >> the C/C++ API as shown in the code below, and the sqlite3_step() >> function always seems to return SQLITE_BUSY for me. I'm not sure >> what I >> am doing wrong. I'm running on Ubuntu 8.04, and I don't have any >> multiple threads or clients or virus software running, so I can't see >> why the database would be locked. The database file gets created okay, >> but it's empty. >> >> Any suggestions? >> >> > > Are you using an NFS filesystem? > > D. Richard Hipp > [EMAIL PROTECTED] > > > > ___ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > > -- George Ryan Senior Software Architect Akoostix Inc., Nova Scotia Canada 902-404-PING | www.akoostix.com "Simplicity and elegance are unpopular because they require hard work and discipline to achieve and education to be appreciated." - Edsger W. Dijkstra The information contained in this e-mail may contain confidential information intended for a specific individual and purpose. The information is private and is legally protected by law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or the taking of any action in reliance on the comments of this information is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone or return e-mail. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLITE_BUSY question
George Ryan wrote: > Hello. I'm a first-time sqlite user, and I have a question. I'm using > the C/C++ API as shown in the code below, and the sqlite3_step() > function always seems to return SQLITE_BUSY for me. I'm not sure what I > am doing wrong. I'm running on Ubuntu 8.04, and I don't have any > multiple threads or clients or virus software running, so I can't see > why the database would be locked. The database file gets created okay, > but it's empty. > > Any suggestions? > > int rc = sqlite3_open_v2( "simple.db", &db_, SQLITE_OPEN_CREATE, 0 ); From the documentation at http://www.sqlite.org/c3ref/open.html you can see that you are using an illegal flags argument to sqlite3_open_v2. You need to or in the SQLITE_OPEN_READWRITE flag as well. int rc = sqlite3_open_v2( "simple.db", &db_, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0 ); HTH Dennis Cote ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] SQLITE_BUSY question
On Jul 9, 2008, at 11:00 AM, George Ryan wrote: > Hello. I'm a first-time sqlite user, and I have a question. I'm using > the C/C++ API as shown in the code below, and the sqlite3_step() > function always seems to return SQLITE_BUSY for me. I'm not sure > what I > am doing wrong. I'm running on Ubuntu 8.04, and I don't have any > multiple threads or clients or virus software running, so I can't see > why the database would be locked. The database file gets created okay, > but it's empty. > > Any suggestions? > Are you using an NFS filesystem? D. Richard Hipp [EMAIL PROTECTED] ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] SQLITE_BUSY question
Hello. I'm a first-time sqlite user, and I have a question. I'm using
the C/C++ API as shown in the code below, and the sqlite3_step()
function always seems to return SQLITE_BUSY for me. I'm not sure what I
am doing wrong. I'm running on Ubuntu 8.04, and I don't have any
multiple threads or clients or virus software running, so I can't see
why the database would be locked. The database file gets created okay,
but it's empty.
Any suggestions?
#include
#include
using namespace std;
int main()
{
sqlite3* db_;
int rc = sqlite3_open_v2( "simple.db", &db_, SQLITE_OPEN_CREATE, 0 );
if ( rc ) {
cout << "failed to connect" << endl;
sqlite3_close( db_ );
return EXIT_FAILURE;
}
sqlite3_stmt* stmt;
std::string query( "create table if not exists version(major int,
minor int)" );
rc = sqlite3_prepare_v2( db_, query.c_str(), query.size(), &stmt, 0 );
if ( rc ) {
cout << "failed to create statement" << endl;
sqlite3_close( db_ );
return EXIT_FAILURE;
}
rc = sqlite3_step( stmt );
cout << "step returned " << rc << endl;
sqlite3_finalize( stmt );
sqlite3_close( db_ );
}
--
George Ryan
Senior Software Architect
Akoostix Inc., Nova Scotia Canada
902-404-PING | www.akoostix.com
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