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| -rw-r--r-- | Doc/faq/library.rst | 46 |
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diff --git a/Doc/faq/library.rst b/Doc/faq/library.rst index ee099cf..a079cb1 100644 --- a/Doc/faq/library.rst +++ b/Doc/faq/library.rst @@ -814,52 +814,6 @@ than a third of a second. This often beats doing something more complex and general such as using gdbm with pickle/shelve. -If my program crashes with a bsddb (or anydbm) database open, it gets corrupted. How come? ------------------------------------------------------------------------------------------- - -.. XXX move this FAQ entry elsewhere? - -.. note:: - - The bsddb module is now available as a standalone package `pybsddb - <http://www.jcea.es/programacion/pybsddb.htm>`_. - -Databases opened for write access with the bsddb module (and often by the anydbm -module, since it will preferentially use bsddb) must explicitly be closed using -the ``.close()`` method of the database. The underlying library caches database -contents which need to be converted to on-disk form and written. - -If you have initialized a new bsddb database but not written anything to it -before the program crashes, you will often wind up with a zero-length file and -encounter an exception the next time the file is opened. - - -I tried to open Berkeley DB file, but bsddb produces bsddb.error: (22, 'Invalid argument'). Help! How can I restore my data? ----------------------------------------------------------------------------------------------------------------------------- - -.. XXX move this FAQ entry elsewhere? - -.. note:: - - The bsddb module is now available as a standalone package `pybsddb - <http://www.jcea.es/programacion/pybsddb.htm>`_. - -Don't panic! Your data is probably intact. The most frequent cause for the error -is that you tried to open an earlier Berkeley DB file with a later version of -the Berkeley DB library. - -Many Linux systems now have all three versions of Berkeley DB available. If you -are migrating from version 1 to a newer version use db_dump185 to dump a plain -text version of the database. If you are migrating from version 2 to version 3 -use db2_dump to create a plain text version of the database. In either case, -use db_load to create a new native database for the latest version installed on -your computer. If you have version 3 of Berkeley DB installed, you should be -able to use db2_load to create a native version 2 database. - -You should move away from Berkeley DB version 1 files because the hash file code -contains known bugs that can corrupt your data. - - Mathematics and Numerics ======================== |