How to solve Oracle's 12541 error
Method: 1. Right-click the bottom taskbar, select Task Manager, and enter the service panel interface; 2. Find the "OracleOraDb11g_home1TNSListener" and "OracleServiceORCL" services in the service panel and open them, and reconnect to the server. Can.
The operating environment of this tutorial: Windows 10 system, Oracle version 12c, Dell G3 computer.
Causes and solutions for Oracle’s 12541 error
The following error occurs: ORA-12541:TNS:no listener, as shown in the figure below:
The reason for the error is that we did not open the Listener service.
Solution
Enable this service in the service, as shown in the figure below.
1. Find the specified service in the task manager
Right-click on the taskbar, select Task Manager, and enter the service panel interface
##2. Enter the service to see if OracleOraDb11g_home1TNSListener and OracleServiceORCL are open. If not, open them.
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