Sqlite data file on Linux and OS X incompatible?
I have no particular knowledge of SQLite, but this is indicative of a problem where two 32-bit words of a 64-bit IEEE 754 format double
are swapped over, as you can see in this example (which was run using gcc
on an x86 machine):
$ cat test.c
#include <stdio.h>
int main(void)
{
union {
double d;
unsigned long long ull;
} u;
u.d = 1.5;
printf("%016llx\n", u.ull);
u.d = 5.30239915051991e-315;
printf("%016llx\n", u.ull);
return 0;
}
$ gcc -Wall -o test test.c
$ ./test
3ff8000000000000
000000003ff80000
$
Are sqlite3 databases are platform independent?
According to Sqlite website, the db file is platform independent:
" A database in SQLite is a single disk file. Furthermore, the file format is cross-platform. A database that is created on one machine can be copied and used on a different machine with a different architecture. SQLite databases are portable across 32-bit and 64-bit machines and between big-endian and little-endian architectures"
Please follow the link: http://www.sqlite.org/onefile.html
You can refer to this thread for further explanation: Sqlite data file on Linux and OS X incompatible?
How do I unlock a SQLite database?
In windows you can try this program http://www.nirsoft.net/utils/opened_files_view.html to find out the process is handling db file. Try closed that program for unlock database
In Linux and macOS you can do something similar, for example, if your locked file is development.db:
$ fuser development.db
This command will show what process is locking the file:
> development.db: 5430
Just kill the process...
kill -9 5430
...And your database will be unlocked.
cannot load such file -- sqlite3/sqlite3_native (LoadError) on ruby on rails
Find your sqlite3 gemspec file. One example is /usr/local/share/gem/specifications/sqlite3-1.3.7.gemspec
Windows: C:\Ruby21\lib\ruby\gems\2.1.0\specifications
.
You should adjust according with your Rubygem path and sqlite3 version.
Edit the file above and look for the following line
s.require_paths=["lib"]
change it to
s.require_paths= ["lib/sqlite3_native"]
Error installing sqlite3 in node.js
have you installed sqlite3 before on another app? because your cached files could be corrupt. try to remove it from your cache with npm cache clean sqlite3
or clean your whole cache with npm cache clean
and run the install script again.
Edit: after you edited your question. it seems to be a permission error. Try running the npm update with sudo npm install -g npm
Summary: It was a problem with an old npm version. The update to a newer version solved it by running sudo npm install -g npm
.
Switching MapServer from Linux with Apache to Windows with IIS. Blank PNG Response
Solved this with section 4.1 of the Spatialite documentation. I had an invalid SRID in my data due to it being imported from a shapefile. I also think it has something to do with this bug with GDAL/OGR because it still works in linux. No matter, it can be fixed with the SetSrid() function.
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