Overrides the default value in the COLUMN_SIZE column for LOB data types.
This will override the 2 Gigabyte (1G for DBCLOB) value that is returned by SQLGetTypeInfo() for the COLUMN_SIZE column for SQL_CLOB, SQL_BLOB, and SQL_DBCLOB and SQL_XML SQL data types. For SQL_XML, LOBMaxColumnSize must be specified with MapXMLDescribe set to a LOB type. Subsequent CREATE TABLE statements that contain LOB columns will use the column size value you set here instead of the default.