dbms_errlog提供了一个存储过程create_error_log，这个存储过程创建一个错误日志表，当dml出错时，操作不会终止和回滚，而是将相
dml_table_name
the name of the dml table to basethe error logging table on. the name can be fully qualified (forexample, emp, scott.emp,emp, scott.emp). if a namecomponent is enclosed in double quotes, it will not be uppercased.
，