n is any nonnegative integer. The maximum value is the maximum string length. The default value is 4096.
ODBCVarcharMaxlen is the MaxLen (maximum length) that InterSystems IRIS® data platform will report to ODBC for fields with the data type VarChar.
Changing This Parameter
You can change ODBCVarcharMaxlen with the Config.SQLOpens in a new tab class (as described in the class reference) or by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book).