Hi Thierry,

thanks for your reply, regarding your questions:

> > Did you also see some logs like "lcache_load_buffer - Can't load changelog 
> > buffer starting at CSN...' ?
No, I have checked the current error logs of both suppliers (and the supplier 
in our lab environment) and those messages don't show up.


> > Did you dump the changelog with dbscan ?
No, I dumped the changelog with:
dsconf slapd-mdir01 replication export-changelog default -r "dc=domain,dc=net"

I tried your command, but we are using mdb as the database backend so it can't 
read the data.mdb file.


> > Did you identify a reproducible testcase? (size of the DB, number of 
> > update, How long did it happen after the topology was setup...)
Not yet, I will try to recreate our setup and will come back to you

> > size of the DB
For Prod, around 9 GB
For Lab, around 300 MB

> > number of update
During peak around 280 - 320 per hour, add and delete each.
It is worth mentioning that the provisioning system is not able to send 
updates, in case a change happens on an existing entry it sends a delete and an 
add. So combined it's 560 - 640 writes per hour.
The 2 changes happen during the same connection. The provisioning system opens 
a new connection for each change.

> > How long did it happen after the topology was setup.
Unfortunately I can't answer this concretely. I was first informed about those 
errors beginning of June. The new environment went live beginning of April.


Kind regards,
Florian
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