pretty
: declare jsn json_object_t; begin jsn := json_object_t.parse('{"num":42,"txt":"hello world!","ary":[1,1,2,3,5,8,13]}'); dbms_output.put_line(jsn.stringify(pretty=>true)); end; / -- -- { -- "num" : 42, -- "txt" : "hello world!", -- "ary" : -- [ -- 1, -- 1, -- 2, -- 3, -- 5, -- 8, -- 13 -- ] -- }