The following table contains limitations on string values in . Value Maximum Limit Length of CHAR 254 characters Length of VARCHAR 32,672 characters Length of LONG VARCHAR 32,700 characters Length of CLOB 2,147,483,647 characters Length of BLOB 2,147,483,647 characters Length of character constant 32,672 Length of concatenated character string 2,147,483,647 Length of concatenated binary string 2,147,483,647 Number of hex constant digits 16,336 Length of DOUBLE value constant 30 characters