Hi Paresh, thanks for your answer, which could be a good solution for me. But it require configurate each db.

Is there any way to set this configuration to apply at all databases, maybe into odoo.conf?

If I have understood your question correctly, once you set this option for the db, your db replication/mirroring solution should take care of the rest.

You can simply trigger a SQL query in all the databases.

Thank Sudhir and Paresh, I will try this solution.

Could you tell me please, if you see disadvantages to use db storing versus file system.