_bsddb

To use the version of bsddb that Python is built with by default, invoke

(in the dist directory)

svn export http://svn.python.org/projects/external/db-4.4.20

Then open db-4.4.20\build_win32\Berkeley_DB.dsw and build the "db_static"

project for "Release" mode.

Alternatively, if you want to start with the original sources,

go to Sleepycat's download page:

http://www.sleepycat.com/downloads/releasehistorybdb.html

and download version 4.4.20.

With or without strong cryptography? You can choose either with or

without strong cryptography, as per the instructions below. By

default, Python is built and distributed WITHOUT strong crypto.

Unpack the sources; if you downloaded the non-crypto version, rename

the directory from db-4.4.20.NC to db-4.4.20.

Now apply any patches that apply to your version.

To run extensive tests, pass "-u bsddb" to regrtest.py. test_bsddb3.py

is then enabled. Running in verbose mode may be helpful.

XXX The test_bsddb3 tests don't always pass, on Windows (according to

XXX me) or on Linux (according to Barry). (I had much better luck

XXX on Win2K than on Win98SE.) The common failure mode across platforms

XXX is

XXX DBAgainError: (11, 'Resource temporarily unavailable -- unable

XXX to join the environment')

XXX

XXX and it appears timing-dependent. On Win2K I also saw this once:

XXX

XXX test02_SimpleLocks (bsddb.test.test_thread.HashSimpleThreaded) ...

XXX Exception in thread reader 1:

XXX Traceback (most recent call last):

XXX File "C:\Code\python\lib\threading.py", line 411, in __bootstrap

XXX self.run()

XXX File "C:\Code\python\lib\threading.py", line 399, in run

XXX apply(self.__target, self.__args, self.__kwargs)

XXX File "C:\Code\python\lib\bsddb\test\test_thread.py", line 268, in

XXX readerThread

XXX rec = c.next()

XXX DBLockDeadlockError: (-30996, 'DB_LOCK_DEADLOCK: Locker killed

XXX to resolve a deadlock')

XXX

XXX I'm told that DBLockDeadlockError is expected at times. It

XXX doesn't cause a test to fail when it happens (exceptions in

XXX threads are invisible to unittest).