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From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Erik Norgaard <norgaard@locolomo.org>
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Cc: questions@freebsd.org
Subject: Re: migrating berkeley DBs (4.3 to 4.6)
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>>> Are there any tools or tricks for doing this?
>> 
>> possibly it's compatible but if you are not sure use db<version>_dump and 
>> _load to dump and restore data.
>
> Thanks, I've had a look at the dump and load utilities, they have no man page

it's not FreeBSD but GNU. No man is equivalent of "read documentation in 
info or out webpage" ;)

> :( dump works fine, or so I assume. But load fails, it appears that db_load 
> won't create a new db file if it does not exist, and creating an empty file 
> with touch fails too:
>
> alpha$ db_dump-4.3 -f cn.bdb.dump cn.bdb
> alpha$ db_load-4.6 -f cn.bdb.dump cn46.bdb
> db_load-4.6: Program version 4.6 doesn't match environment version 0.154
> db_load-4.6: DB_ENV->open: DB_VERSION_MISMATCH: Database environment version 
> mismatch

ups. really i use only db4.1 and it worked

don't you have mixed libs and executables. looks like this.