After further log file analysis I found the blocking ldap query ... it is a
BIND request (which is successfull) and a missing CLOSE afterwards. After 5
minutes the LDAP Server closes the connection with closetype="T2" (server side
timeout). So far so good (client problem I will fix). I am not
Thank you Thierry for your support.
So I will try to get the thread dump .. If the problem comes with a connection
timeout from a (not listening) client, shoudn´t I see an error log entry
somewhere? I searched for that for hours but no hints .. Maybe not the right
idea but the problem came
We are using 389-Directory/1.3.10.2 B2021.127.856 (we will update next month)
.. a monitor script queries with basedn cn=monitor and filter (objectClass=*)
every minute. This query returned in <10ms for years. Since two weeks under
unknown circumstances this query lasts up to 300s (one or two
