By default in every Oracle Database, you can have up to 200 total data files (.DBF files) in each Oracle Database instance as indicated by the value of the parameter “db_files” (you can check the value by running “show parameter db_files” in your database. If you need to create more data files than what the db_files parameter will allow, you will need to increase the value of db_files. If this is not done, you will receive the following error when you either create a new data file for an existing tablespace or create a new tablespace:

Symptom:

Solution:

Increase db_files initialization parameter and bounce the database. Increase this parameter will increase the PGA consumption for every server process.

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