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No.
varchar2is an Oracle datatype, equivalent to its (as well as TSQL’s) ownvarchar.CLARIFICATION
The differentiation between Oracle’s
varcharandvarchar2seems to have originated back when the ANSI SQL standard was still being formulated. I cannot locate any definitive references as to what exactly the implementation differences, if any, were initially (pre-Oracle 7), as this remains a source of confusion. Suffices to say that the two are practically treated as synonyms since Oracle 7. Both suffered improvements (maximum size went from 2k to 4k) in release 8. Note that TSQL’svarcharcan store 8k.