BDB Locker

[RW <openldap@tauceti.net>]

Hi!

Using BDB 4.5.52 (no patches), OpenLDAP 2.2.11 and Redhat ES 3 from time 
to time I get the following
DB_LOCK_DEADLOCK error's:

=> bdb_dn2id_add: put failed: DB_LOCK_DEADLOCK: Locker killed to resolve 
a deadlock -30995
=> bdb_dn2id_add: put failed: DB_LOCK_DEADLOCK: Locker killed to resolve 
a deadlock -30995
=> bdb_dn2id_add: put failed: DB_LOCK_DEADLOCK: Locker killed to resolve 
a deadlock -30995
=> bdb_dn2id_add: put failed: DB_LOCK_DEADLOCK: Locker killed to resolve 
a deadlock -30995
=> bdb_idl_insert_key: c_get failed: DB_LOCK_DEADLOCK: Locker killed to 
resolve a deadlock (-30995)
=> bdb_dn2id_add: put failed: DB_LOCK_DEADLOCK: Locker killed to resolve 
a deadlock -30995
=> bdb_dn2id_add: put failed: DB_LOCK_DEADLOCK: Locker killed to resolve 
a deadlock -30995

Before moving the database files to a really fast SAN and increasing 
set_lk_max_lockers, set_lk_max_locks,
set_lk_max_objects and set_tx_max the error's occured more often. But 
they are still occuring. I believe
that this deadlocks are sometimes cases OpenLDAP to crash.
Now I have seen that there are two patches for BDB available which are 
addressing locking issues.
Has anyone similar problemes with this kind of deadlock's? Would 
applying the BDB patches help to
solve this deadlock problems? Any experience?

Cheers
Robert