If you get ORA-12154 , check:
For Linux environments, the installation can be done using the graphical user interface via X11 forwarding or silently through the command line. Step 1: Install Dependencies
Allows you to manually select individual components. Select Administrator and click Next . Step 3: Specify Software Location Configure your Oracle directories: install oracle client 12c
Complete Guide to Installing Oracle Client 12c on Windows and Linux
Installs only the components needed for applications to run. Custom: Allows you to select specific components. 4. Specify Installation Location Choose the Oracle Base and Software Location (Oracle Home). Example: C:\app\client\username\product\12.1.0\client_1 5. Summary and Installation If you get ORA-12154 , check: For Linux
If the connection is successful, you will see the SQL*Plus prompt.
Click to begin the file extraction and setup process. Once completed, a success message will appear. Click Close . Step-by-Step Installation on Linux Step 3: Specify Software Location Configure your Oracle
: Match the client architecture (32-bit or 64-bit) to the application that will use it, not just the operating system. For example, 32-bit applications on 64-bit Windows require a 32-bit client.