I exported my Oracle database from one database to another and now I cannot save or open models f (4292838)

PROBLEM:  I exported my Oracle database from one database to another and now I cannot save or open models from my mart because the mart server says they are locked

Cannot open the model with the requested lock:  other users hold conflicting locks.  Contact your mart administrator for more information.

Cannot save the model because it is locked by another user.  Contact your mart administrator for more information.

SOLUTION:  You may have done an object-level export-import.  You need to do a schema level export-import of your database.

As an example,

1. Create a Directory file and map that file -->  CREATE DIRECTORY dbdump AS ‘C:\dbdump’.
2. Export the schema to the Directory file --> expdp mmadmin/mmadmin@test schemas=mmadmin directory=ddbdump dumpfile=MMADMIN.dmp logfile=expdpSCOTT.log
3. Import the schema from the Directory file --> impdp mmadmin/mmadmin@test schemas=mmadmin directory=dbdump dumpfile=MMADMIN.dmp logfile=impdpSCOTT.log