LONG, RAW and LONG RAW

LONG

LONG columns store variable-length character data with a maximum length of 2^31 - 1 (2,147,483,647) bytes. A table cannot contain more than one LONG column.

RAW(n)

RAW is variable-length data type. Oracle does not perform character conversion when transmitting RAW data. The maximum length is 2000 bytes. You must specify the size for RAW columns.

LONG RAW

LONG RAW columns store variable-length data with a maximum length of 2^31 - 1 (2,147,483,647) bytes. Oracle does not perform character conversion when transmitting LONG RAW data.