How do I fix my ORA-12514?

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.

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 ORA 12505 error?

There are several methods of correcting error ORA-12505. Your first action to resolve this issue should be to wait a few seconds, then try to re-connect to the database again. If this attempt is unsuccessful, try checking to see which instances are known by the listener.

How does SQL Developer connect to RAC?

JDBC Step-by-Step Guide

1. Replace INSTANCENAME in the string above with the desired database name.
2. In SQL Developer, create a new connection.
3. Specify a name for your connection.
4. Under “Connection Type,” choose Advanced.
5. Test to confirm your string is properly formatted, then Save.

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 connect to a remote database in SQL Developer?

Connecting Remotely to the Database by Using Oracle SQL Developer

1. Open SQL Developer. Right-click Connections and select New Connection.
2. Provide the following information and then click Test. Connection Name: Create a name for this connection.
3. If your test results show success, click Connect.

How do I connect to a connection string in Oracle SQL Developer?

To us a TNS connection string, in the New / Select Database Connection window where you configure the connection:

1. Set Connection Type to TNS.
2. Under the Details tab select Connect Identifier.
3. Put the connection string into the text box next to Connect Identifier.
4. Click Test if you’d like, to make sure it works.
5. Click Save.

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.

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. 3 Not registered

Is the target listener up and running in ora-12514?

Only one thing that can be sure in ORA-12514 is that the target listener is up and running. That is to say, the listener is reachable. For unknown requested SID, the listener throws ORA-12505: TNS:listener does not currently know of SID given in connect.

What’s the difference between Oracle 11 and Oracle 12?

There is a difference between when you select Oracle 11 and Oracle 12 at the time of installation. There are chances that users provide the SID instead of service name. If you select Oracle 11 you should provide the Oracle SID whereas if you are using Oracle 12 then you must provide the Oracle SERVICE NAME.