ORA-40218：Both priors table and weights table are specified

解决方法：Priors table is the old (pre 11g) mechanism for specifying class weights, and class weights table is the new (and correct) way to specify class weights. Remove the priors table entry from the settings table (after transferring class weight settings, if appropriate). Going forward, priors table will be valid only for NB models. Use class weights for SVM.