You may get this error while creating a tablespace in your environment.

Oracle has some boundaries to set datafile maximum size based on the db_block_size parameter.

db_block_size maximum allowed size for datafile
2k 8GB
4K 16GB
8K 32GB
16K 64GB
32K 128GB

The formula to calculate the max size is db_block_size * 4194303.

If you want to create the greater size of the tablespace.

  1. Either your create multiple datafiles.
  2. Use bigfile datafile.

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