egarciab@alcatel-lucent.com writes:
Did you see anytime a similar problem of slapd sleeping mode?
Slapd does not have a "sleeping mode", but there have been bugs with the locking code. E.g. a function takes a lock but in the case of some rare error return it forgets to release it. Then the next attempt to use that resource (e.g. a locked entry, or a locked database) will hang.
I see you use "database oci". This was never part of OpenLDAP as far as I know. <google oci site:openldap.org> shows the code was submitted. I don't know the slapd SQL code and haven't checked if the code was rejected because of some problem, or merged into back-sql, or something else. If you browse these messages, maybe that'll turn up your problem.