Thanks, it worked!
This is what i have on my side in case anyone else will stumble over this issues:
<broker brokerName="jdbcBroker" xmlns="
http://activemq.apache.org/schema/core"> <persistenceAdapter>
<jdbcPersistenceAdapter lockKeepAlivePeriod="1000" lockAcquireSleepInterval="2000" dataSource="#mysql-ds">
<databaseLocker>
<lease-database-locker/>
</databaseLocker>
<statements>
<statements binaryDataType ="LONGBLOB"/>
</statements>
</jdbcPersistenceAdapter>
</persistenceAdapter>
<transportConnectors>
<transportConnector name="default" uri="tcp://0.0.0.0:61616"/>
</transportConnectors>
</broker>