Oracle/PLSQL: Data Types The following is a list of datatypes available in Oracle. Character Datatypes Data Type Syntax Oracle 9i Oracle 10g Oracle 11g Explanation (if applicable) char(size) Maximum size of 2000 bytes. Maximum size of 2000 bytes. Maximum size of 2000 bytes. Where size is the number of characters to store. Fixed-length strings. Space padded. nchar(size) Maximum size of 2000 bytes. Maximum size of … Continue reading Oracle/PLSQL: Data Types