> ERROR: syntax error at or near "BYTE"

[postgresdba...@outlook.com]

CREATE TABLE "A"
(
  "b"                 DATE,
  "c  "               NUMBER,
 " d "                  VARCHAR2(255 BYTE),
  "e "            VARCHAR2(255 BYTE))

  When ı create table then after error why error in byte please heplp me thanks

  error:> ERROR:  syntax error at or near "BYTE"