|Version 8 (modified by 16 years ago) ( diff ),|
It should still be possible to use the old SQLite 2.8.x with the Pysqlite 1.0.1, but Trac 0.9 works best with SQLite 3.2.8. The compatible Python bindings are:
- either the 1.x release branch of PySqlite (version 1.1.6 as of this writing)
- or, better, the newer 2.0.x release branch (version ≥ 2.0.5 preferred, 2.0.3 has been reported to cause crashes on Windows)
- the 2.1.0 version appears to work well with Trac. This release branch features a new statement cache and a better handling of concurrent write operations.
Recent versions are available from there.
Note: If you want to use Trac in a multi-threaded setup
by using either TracModPython or TracStandalone, be sure to build a
thread-safe version of SQLite, by using the
If you use a non thread-safe library, which is unfortunately what you
get by default on non-windows platforms, you face the risk to get
persistent database locks (see #2170).
Upgrading SQLite from 2.x to 3.x
The following information is copied from http://dev.ctor.org/pkcs1/wiki/TracUpgrade
The database formats used by SQLite 2.x and sqlite 3.x are incompatible. If you upgrade your SQLite version (this can also happen implicitly if you upgrade from PySQLite 1.0.x to 1.1.x or 2.x), then you must convert your database.
To do this, install both SQLite 2.8 and SQLite 3.x (they have different filenames so can coexist in the same directory). Then use the following commands (Windows):
$ mv trac.db trac2.db $ sqlite trac2.db .dump | sqlite3 trac.db
Then when you're happy with the conversion and tested everything you can delete the trac2.db file.
Note: A similar procedure (
sqlite3 corrupted.db .dump | sqlite3 recovered.db) can also be used to recover a corrupted database file (see #2598, for example).
For more information see http://www.sqlite.org/version3.html