Oracle Solution for Error ora-14521

ORA-14521: Default tablespace string block size [string] for string string does not match existing string block size [string]

What triggered the Error:

A DDL statement was issued that would require creation of a new partition/subpartition in the object-level default tablespace of an existing partitioned object. However, the object-level default tablespace block size does not match the block size of the partitioned object.

What should we do to fix it:

Either (1) Modify the default tablespace of the partitioned object to a tablespace of the same block size as the object and then retry the DDL command, OR (2) Ensure that tablespaces of the correct block size are specified for all new partitions/subpartitions being created.