How to solve the problems that navicat listeners cannot recognize at present

This article mainly introduces how to solve the problems that navicat listeners can not identify at present, which has a certain reference value, and friends who need it can refer to it. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

When connecting to oracle with navicat, the program reports an error and prompts: "ORA-12514, TNS:listener does not currently know of service requested in connect descriptor". After checking, it is because the name of service is misspelled.

Solution:

The first step is to find tnsnames.ora in the oracle installation directory.

(example directory of tnsnames.ora: d:\ oracle\ product\ 10.2.0\ db_1\ network\ admin\ tnsnames.ora)

The second step is to find service_name in tnsnames.ora, which is the service name that navicat needs to fill in when connecting to the database:

The third step is to enter the corresponding service_name in the connection properties of navicat, as well as host, username, password, etc., which should be able to connect successfully.

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