The following is the ORA-23515 error message, you can learn the cause and solution of the Oracle database error.

ORA-23515 materialized views and/or their indices exist in the tablespace

Cause: An attempt was made to drop a tablespace which contains materialized views and/or their indices.

Solution: Drop the materialized views in this tablespace. Also, find indices belonging to materialized views in this tablespace and drop then. Then try dropping the tablespace.


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