APT_DATE_ADD_ROLLOVER

Set this environment variable to disable a change to year/month date calculations that was introduced in IBM® InfoSphere® Information Server, Version 9.1.

A change was introduced in InfoSphere Information Server, Version 9.1, to the result returned by year/month date calculations, but not to the result returned by day calculations. Before InfoSphere Information Server, Version 9.1, if a calculation resulted in a day value that was greater than the maximum valid day, the date was adjusted the appropriate number of days into the next month. In InfoSphere Information Server, Version 9.1, the date is adjusted to the last valid day of the month.

For example, if a date is calculated as January 40, 2012, InfoSphere Information Server, Version 9.1, returns a result of January 31, 2012. If the APT_DATE_ADD_ROLLOVER environment variable is set, a value of February 9, 2012 is returned.