To verify that the installation succeeded and your configuration file works: Open a new Command Prompt window.
unset LANG LC_ALL export NLS_LANG=AMERICAN_AMERICA.US7ASCII
After the installer finishes, you may need to run a root script as the root user to complete the setup.
On Windows, ensure you have the Microsoft Visual C++ 2010 x86 Redistributable installed to avoid common setup errors. Installing Oracle Database 12c on Windows install oracle client 12c
SQL*Plus: Release 12.2.0.1.0 Production on Tue May 26 2026 Copyright (c) 1982, 2016, Oracle. All rights reserved. Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production SQL> Use code with caution. Type exit to disconnect. Troubleshooting Common Errors
The first screen asks for email updates.
For system administrators deploying the client across multiple enterprise workstations, a silent installation saves time. To verify that the installation succeeded and your
export ORACLE_HOME=/u01/app/oracle/product/12.1.0/client_1 export PATH=$ORACLE_HOME/bin:$PATH export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib export TNS_ADMIN=$ORACLE_HOME/network/admin Use code with caution. 2. Configure the tnsnames.ora File
Execute the root scripts when prompted by opening a separate terminal as root :
for Oracle Client (as described in the Hexagon Smart Reference Data Help ) Let me know which topic you'd like to explore next! AI responses may include mistakes. Learn more Share public link Installing Oracle Database 12c on Windows SQL*Plus: Release
If successful, you will see a message displaying OK along with the round-trip time in milliseconds. Next, test an actual database connection using SQL*Plus: sqlplus username/password@MY_DB_ALIAS Use code with caution.
Installs connectivity drivers (ODBC, OLE DB, ODP.NET) and SQL*Plus. Custom: Allows you to select specific components. For most users, Runtime is sufficient. Click Next. Step 3: Specify Installation Location Oracle Base: Define a folder, e.g., C:\app\client .
The following features are typically included or available as options during the installation:
Follow the screen prompts similarly to the Windows steps detailed above. Step 4: Configure Environment Variables
Cause: A 32-bit application trying to use a 64-bit Oracle Client, or vice versa.