https://bugs.openldap.org/show_bug.cgi?id=10138
--- Comment #3 from Howard Chu hyc@openldap.org --- If you guarantee that no writes are being performed while you're doing these reads, and you're not using any special feature (like encryption, which maintains per-txn cache of decrypted pages) then you only need to open multiple cursors on the write txn, and use one cursor per other thread.