Both DATETIME and INTERVAL values are stored internally as DECIMAL values. In this statement, an arithmetic operation that uses DATETIME and/or INTERVAL values has caused an arithmetic overflow. This situation should not occur. Check the precision that is specified for an INTERVAL value. If the INTERVAL value that you want to enter is greater than the default number of digits that are allowed for that field, you must explicitly identify the number of significant digits in your definition. If the error recurs, note all circumstances and contact IBM Informix Technical Support.