From: Nikolai Krot <fake_address@...>
Date: 2005-05-15T21:35:30+09:00
Subject: ruby + Berkeley DB: BDB::Fatal

Hello!

Situation:

I'm trying to build a Berkeley DB that holds a bilingual dictionary, say 
English-Russian, in a single physical database file. English-to-Russian 
equivalents go into one subdatabase, Russian-to-English go into another 
subdatabase.

The database is opened like this:

	# English-to-Russian subdatabase
	@trn_db1 = BDB::Hash.open(dbfile, "trans1", BDB::CREATE) # (1)
	# Russian-to-English subdatabase
	@trn_db2 = BDB::Hash.open(dbfile, "trans2", BDB::CREATE) # (2)

There is also defined a procedure that, from a single English-to-Russian 
pair sets/updates data in the two subdatabases in the following way:

	@trn_db1[enword] = merge(@trn_db1[enword], newdata...) # (3)
	@trn_db2[ruword] = merge(@trn_db2[ruword], newdata...) # (4)

The trouble is...

Running this stuff, I get the following error at (3):

`[]': PANIC: Invalid argument -- DB_RUNRECOVERY: Fatal error, run 
database recovery (BDB::Fatal)

But it is still possible to compile the dictionary in two runs, by first 
compiling Russian-to-English section (4) and then English-to-Russian 
(3). Which surprises me most is that it does not work viceversa, first 
(3) then (4)!


Can someone explain what's going on with Ruby/BDB or the bug is in my 
head :).

Thanx in advance

Nikolai Krot

-- 
Entropy isn't what it used to be.