No, you cannot merge datafiles between databases. You may use Transport Tablespaces to plug-in an entire self-contained tablespace from one database to another. Enkhbold Dashdondog <enkhbold@xxxxxxxxxxxx> wrote: Hi I have two different Database server (A, B) with same Database. If A server database is damaged, but A_USER_ Datafile is fine. In A Server, export and expdp are not working. Is possible get A_USER_Datafile and merge to B database? Enkhbold --------------------------------- Never miss a thing. Make Yahoo your homepage.