How do I fix ORA 12541 error?
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 Lsnrctl status?
How Can I Check Whether the Oracle Listener Is Started
- Log in to the SUSE Linux as user oracle.
- On the command line interface (CLI), run the following command to view the state of the Oracle listener: > lsnrctl status Listener name.
How do I fix TNS listener error?
First check the tnsnames. ora file and ensure that it points to the correct server and port. If the Forms server is on another machine, test the TNS resolve with tnsping from the command prompt. Finally, check the listener.
What is Lsnrctl?
lsnrctl (Listener Control) is an SQL*Net utility used for controlling database listeners. A listener is required for allowing remote (not local) clients to connect to the Oracle database via the network.
How do I restart Lsnrctl?
To restart the listener use lsnrctl reload as shown below instead of lsnrctl stop and lsnrctl start. realod will read the listener. ora file for new setting without stop and start of the Oracle listener.
How do I run Lsnrctl services?
Do the following:
- Log on to the host where the Oracle database resides.
- Change to the following directory: Solaris: Oracle_HOME/bin. Windows: Oracle_HOME\bin.
- To start the listener service, type the following command: Solaris: lsnrctl START. Windows: LSNRCTL.
- Repeat step 3 to verify that the TNS listener is running.
What does Lsnrctl reload do?
reload: Forces a read of the configuration file in order for new settings to take effect without stopping and starting the listener. save_config: Creates a backup of the existing listener. ora file and saves changes to the current version.