I've two dbs. The master database is version 10.2.0.5 and the database with the m-view is version 220.127.116.11. Now I want to refresh the m-view with the fastoption, but I receive allways the Error-Code: ORA-12028 when I want to create the m-view with the fast refresh option.
You have quite a long domain name. Check if DB_DOMAIN has been set.
If these are test environments, I suggest setting a more meaningful DB_DOMAIN name --- however this will impact Database Links.
Also, I suggest that you look at these Articles on support.oracle.com :
How to deal with ORA-12028 reported when creating a Fast Refreshable Remote Mview [ID 1059547.1]
Create Materialized View Fails with ORA-12028 [ID 1321715.1] Bug 6074902 - ORA-12028 for Materialized View if DB link name has special characters [ID 6074902.8]
Log an SR with Oracle support. They'll help you trace the CREATE MATERIALIZED VIEW operation.