How do I fix error ORA-12505?

How do I fix error ORA-12505?

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 do I fix Listener refused the connection with the following error?

1. Open Oracle Net Manager. In Oracle Net Configuration, open Local, and then, open Listeners.
2. In the upper right ComboBox, select Database Services.
3. Clic Add Database.
4. Fill the 3 fields: Global Database Name (i.e. ORCL.NET.
5. Restart the OracleOraDb11g_home1TNSListener service.

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 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 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 does the error ora-12505 mean?

The error encountered is: “Listener refused the connection with the following error: ORA-12505, TNS:listener does not currently know of SID given in connect descriptor In an Oracle 12c container database, the client must specify a service name in order to connect to the PDB.

How to fix ‘ora-12505, TNS listener does not currently know of Sid given?

How to Fix ‘ORA-12505, TNS:listener does not currently know of SID given in connect descriptor’ 1 SIDs vs SERVICE_NAMES. It is important to understand the (slight) difference between what Oracle defines as a SID compared to a SERVICE_NAME, as we’ll use this information to create a 2 The TNS Listener. 3 Connection String.

What does ora-12154 error mean?

(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?

How to connect to an Oracle 12c container database?

In an Oracle 12c container database, the client must specify a service name in order to connect to the PDB. Many Database clients with earlierreleases of Oracle Database might have hard-coded connect descriptors touse SID to connect to the database.