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ORA-00380:

cannot specify db_stringk_cache_size since stringK is the standard block size
Cause: User specified the parameter db_nk_cache_size (where n is one of 2,4,8,16,32), while the standard block size for this database is equal to n Kbytes. This is illegal.
Action: Specify the standard block size cache using db_cache_size (DEFAULT pool) (and db_recycle_cache_size, db_keep_cache_size if additional buffer pools are required). Do NOT use the corresponding db_nk_cache_size parameter for the standard block size.