Replication failed

Dear support members,

I am trying to set up a replication url in objectdb.conf and have the the following error in the log files:

[ObjectDB 2.3.4] javax.persistence.PersistenceException
Failed to connect to server 127.0.0.1:6136 (Connection refused) (error 522)
at com.objectdb.jpa.EMF.createEntityManager(EMF.java:176)

My objectdb.conf:

<general>
  <temp path="$temp/ObjectDB" threshold="64mb" />
  <network inactivity-timeout="0" />
  <log path="$objectdb/log/" max="8mb" stdout="false" stderr="false" />
  <log-archive path="$objectdb/log/archive/" retain="90" />
  <logger name="*" level="info" />
</general>

<database>
  <size initial="256kb" resize="256kb" page="2kb" />
  <recovery enabled="true" sync="true" path="." max="128mb" />
  <recording enabled="true" sync="false" path="." mode="write" />
  <locking version-check="true" />
  <processing cache="128mb" max-threads="10" />
  <query-cache results="64mb" programs="500" />
</database>

<server>
  <connection port="6136" max="200" />
  <data path="$objectdb/db-files" />
  <replication url="objectdb://127.0.0.1:6000/cp.odb;user=admin;password=admin" />
</server>

on a windows machine, this works properly and objectdb is starting and executing data manipulation fine but on debian I got this error. The directory '$replication' and the files in the directory however are created but only once - is there anything special to do with permissions on file access?

Many thanks for help or tips!

It is unclear why you get this exception.

Check for additional stack traces in the log files of both the master and the slave.

You should also try a newer ObjectDB version (build 2.4.1_01).

Other ideas: verify that both servers on 6136 and 6000 are running, start with an empty database or with an up to date copy of the master database in the slave $replication directory, and provide maximum permissions.