ORA-40028: solution to least squares problem could not be found
Cause: Unable to find solution because the predictor build data were not properly scaled.
Action: Standardize the predictor build data by enabling auto prep.
ORA-40028: solution to least squares problem could not be found 这是由 Oracle 数据库抛出的一个异常,表明找不到至少二乘问题的解决方案。
1.确认所使用的二乘回归分析的数据合法性;
2.确定样本的数量是否足够;
3.加大二乘回归分析的精度;
4.检查数据样本是否具备一定的正则性以及规律性;
5.检查所用算法是否适合处理本次分析;
6.检查时间顺序是否正确。