I've a problem that my application hangs on reading/writing db file...
but first - brief description.
1. application works with a lot of small db files (about 100 000 files
of 16-20 KB size), which are working on the same BDB environment.
2. it's perl fast cgi web application.
3. current Env config is:
-Flags = DB_INIT_MPOOL | DB_INIT_CDB | DB_CREATE
-Cache size: 32 MB (64 MB tried)
-Lock detect: DB_LOCK_DEFAULT
4. OS is Gentoo Linux
5. Hardware: AMD Opteron 64 (2 processors), 300 GB HDD, 4 GB RAM
6. Application has high locking activity.

Only db_recover helps.

I've found similar problem here
http://groups.google.ru/group/comp.d...348b8 2ae11a3
but I didn't found how they solved it in code.

Several additions:
1. If I open another db file(s) with the same Env while other file(s)
are hanged up - it works, I can read, write, lock and unlock db.
2. Each utility works fine and doesn't complain that "db env is
corrupt, run recover".

The problem is still unsolved.

Forgot to add, that db_stat and db_deadlock show no lost lockers or
deadlocks.

I believ I've found a sollution, it's DB_DIRTY_READ (for db opening).
but is it safe enough to use it?