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Extended Data Types in Oracle SQL

Dinesh Chandar mk
31/01/2023 0 0

Prior to Oracle 12c :
•    VARCHAR2 : 4000 bytes
•    NVARCHAR2 : 4000 bytes
•    RAW : 2000 bytes
Extended Data Types in Oracle 12c optionally increases these maximum sizes.
•    VARCHAR2 : 32767 bytes
•    NVARCHAR2 : 32767 bytes
•    RAW : 32767 bytes

Extended data types functionality is controlled using the MAX_STRING_SIZE initialization parameter.  Default value is 'STANDARD' which sets the maximum sizes to traditional lengths.  Setting it to 'EXTENDED'  allows it to extended it to 32767.

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