How do I fix TNS listener does not currently know of service requested in connect descriptor?

How do I fix TNS listener does not currently know of service requested in connect descriptor?

Action:

1. Wait a moment and try to connect a second time.
2. Check which services are currently known by the listener by executing: lsnrctl services.
3. Check that the SERVICE_NAME parameter in the connect descriptor of the net service name used specifies a service known by the listener.

What is ora12505?

ORA-12505 means that the listener knows about that database, but the listener hasn’t received a notification from the database that the database is up. (If you were trying to connect to the wrong database, using the wrong SID, you would get an ORA-12154 error “TNS: could not resolve the connect identifier specified”.)

How do I install TNS Listener service?

Configuring Access to Oracle JServer

1. Start Oracle Net Manager.
2. In the navigator pane, expand Local > Listeners.
3. Select a listener.
4. From the list in the right pane, select Listening Locations.
5. Click Add Address.
6. Select the TCP/IP or TCP/IP with SSL protocol from the Protocol list.

Where I can find listener Ora file?

By default, the listener. ora file is located in the ORACLE_HOME/network/admin directory.

How do I fix TNS no listener error?

The Solution First, make sure that the listener is up and running. To do this, go to the Control Panel into Services under NT or listener control program (LSNRCTL). If the listener is up and running, the problem may lie with the listener not having been associated with the correct instance or protocol.

How do I check my Ora?

ora file is located in the ORACLE_HOME/network/admin directory. Oracle Net will check the other directories for the configuration file. For example, the order checking the tnsnames.

How do I modify listener Ora?

Changing listener. ora to use the new ORACLE_HOME

1. Run the following commands to change to the TNS_ADMIN directory and modify the listener.ora file to use the new ORACLE_HOME : $ cd $ORACLE_HOME/network/admin $ vi listener.ora.
2. Within the file, modify the ORACLE_HOME as appropriate.

What is difference between listener Ora and Tnsnames Ora?

Oracle listens to client connections using a service which is defined in the listener. ora file. The net service which are used to connect to databases are defined in the tnsnames. ora file provides the network address to the Oracle Name Server (ONS) for Net connections.

What is Oracle SQL * Net?

SQL*Net (or Net8) is Oracle’s networking software that allows remote data access between programs and the Oracle Database, or among multiple Oracle Databases. Applications and databases can be distributed physically to different machines and continue to communicate as if they were local.

What causes the ” ora-12505 ” error message?

Administrator clicks ‘Test Connection’ but receives an error message. There are many possible causes for the ” ORA-12505: TNS:listener ” error, such as: Specifically, the LISTENER on the Oracle database server was not configured correctly. For more details, see separate IBM Technote #1447103.

What does ora-12505 mean in TNS solution?

Solutions ORA-12505 means that the SID you provided in the connect identifier does not match any SID registered with the listener. In fact, in the new multitenant environment, the name of SID has become a service name belonging to the migrated DB. That’s why the listener refused to establish connections.

Why does Oracle services get an ora-12154 error?

(If you were trying to connect to the wrong database, using the wrong SID, you would get an ORA-12154 error “TNS: could not resolve the connect identifier specified”.) What Oracle services are running in the Services snap-in?

https://www.youtube.com/watch?v=ZTMsdH4hyrE