Re: DB::put function is getting hanged

> Am a fresher in BerkeleyDB. If i open a database file(using
> transaction) for put(adding to DB) and if i tried to open the same
> file in different transaction the put is hanging. It seems a deadlock
> is occuring. Is it not allowed, the same database file to be opened in
> more than one transactions?

It's allowed, but only if the threads or processes executing the open
and the put are ordered in some way unknown to Berkeley DB.  If you've
got a single process that tries to do these things, they are trivially
ordered, so it's not allowed.  Another source of orderings is IPC.