Recent reports have to use sails soft draw, so the local installation oracleXE, results when connected always reported: "listener could not distribute client connections"
Read many blog online, because most blog just gave way to solve the problem (not actually find the crux), many methods are failed
https://blog.csdn.net/qq_30837459/article/details/78982943
Key words: View oracle \ product \ 11.2.0 \ server \ network \ ADMIN \ tnsname.ora the Host, Port and Service_name;
A stupid mistake but sometimes hard to find