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Last active July 22, 2025 13:38
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Configuring the Oracle Instant Client 64-bit
How To Configure Oracle Instant Client (64-bit)
===============================================
Download the 64-bit Instant Client from the Oracle Developers Portal
Extract the client to a folder like C:\ORACLE\INSTANT
Add the client folder above to the Windows PATH variable
Add a TNS_ADMIN environment variable (TNS_ADMIN=C:\ORACLE\INSTANT)
Add a NLS_LANG environment variable (NLS_LANG=American_America.CL8MSWIN1251)
Create the registry entries for the 64 bit client
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\ORACLE]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\ORACLE\KEY_INSTANTCLIENT]
"NLS_LANG"="American_America.CL8MSWIN1251"
"ORACLE_HOME"="c:\\oracle\\instant"
"ORACLE_HOME_NAME"="MY_INSTANTCLIENT"
Adjust the "tnsnames.ora" file to reflect your database server configuration
For the Oracle Autonomous Database (cloud) the "sqlnet.ora" file also needs to be updated, see below:
https://www.dbi-services.com/blog/first-steps-with-oracle-autonomous-database/
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