What is ORA-12514 TNS listener does not currently know of service requested in connect descriptor?

ORA-12514 means that the listener cannot find any matched service with yours, so it cannot establish a connection with the database for you. As a result, it responds ORA-12514 to alert the failed connection. Also, this could be due to using the wrong service name.

How do I fix my ORA-12514?

The solutions to ORA-12514 are to make sure the following things:

1. The database is available. If there’s no instance, then no service name will register with the listener.
2. The service names are matched.
3. The host and port are both right.
4. Instance registers it services with the right listener.

Why does TNS not know of ora-12514?

Here are some possible causes of ORA-12514: 1. No instance The database was not available or say idle, no any dynamic services registered with the listener. That’s why we saw ORA-12514. 2. Mismatched service name The service name of the connect descriptor in tnsnames.ora did not match the service name in the listener.

How to resolve error ora-12514 listener does not?

This may be a temporary condition such as after the listener has started, but before the database instance has registered with the listener. Check that the SERVICE_NAME parameter in the connect descriptor of the net service name used specifies a service known by the listener.

What to do if Oracle listener does not know of service?

First check whether you are able to connect to standby database from primary database using sql > sqlplus sys@orastand as sysdba ( orastand is a standby database). If you are not able to connect then it is a problem with the service. Correct the entry of service name in TNS file at primary end.

What does Ora 12514 mean in a DBA?

ORA-12514 means that the listener cannot find any matched service with yours, so it cannot establish the connection with the database for you. As a result, it responds ORA-12514 to alert the failed connection. As a DBA, I have seen several kinds of ORA-12514 in different scenarios and solved them by different means.

What is ORA 12514 TNS listener does not currently know of service requested in connect descriptor?

ORA-12514 means that the listener cannot find any matched service with yours, so it cannot establish a connection with the database for you. As a result, it responds ORA-12514 to alert the failed connection. Also, this could be due to using the wrong service name.

How do I connect to Oracle 11g Express Edition?

Navigate the system menu as follows:

1. On Windows, from the Start menu, select Programs (or All Programs), then Oracle Database 11g Express Edition, and then Get Started.
2. On Linux, click the Application menu (on Gnome) or the K menu (on KDE), then point to Oracle Database 11g Express Edition, and then Get Started.

How do I connect to Oracle 10g Express Edition?

How-To Connect to Oracle Database 10g Express Edition

1. Startup Oracle SQL Developer.
2. From within the Connections navigator on the left side of the tool, right-click on Connections.
3. Select New Database Connection.
4. Enter the following information: Connection Name: XE.
5. Click Connect.

How do I connect to Oracle Express?

To connect to Oracle Database Express Edition from SQL*Plus:

1. If you are on a Windows system, display a Windows command prompt.
2. At the command prompt, type sqlplus and then press the key Enter.
3. At the user name prompt, type your user name and then press the key Enter.

Why is my ora-12514 database not available?

When the connection came, the listener found no matched service name registered with it. Consequently, the listener had no idea which database should be used to service the connection. Here are some possible causes of ORA-12514: 1. No instance The database was not available or say idle, no any dynamic services registered with the listener.

What does ora-12514 mean for TNS listener?

ORA-12514 means that the listener cannot find any matched service with yours, so it cannot establish the connection with the database for you. As a result, it responds ORA-12514 to alert the failed connection. As a

Why does Oracle 11g listener get an ora-12505 error?

Exiting SQL*Plus Similarly, if I connect via SqlDeveloper I get an error (albeit ORA-12505, TNS:listener does not currently know of SID given in connect descriptor ). This instance has been stable and working fine for a year or more until today, a Monday morning.

Why is my oracleservicemydb database not available?

ORA-01034 – Oracle not available” it’s likely that your database instances are down. It is theoretically possible to have the underlying Windows service OracleServiceMYDB running and corresponding oracle.exe in processes, but the database instance being down.