Oracle Instant Client enables development and deployment of applications that connect to Oracle Database, either on-premise or in the Cloud. The Instant Client libraries provide the necessary network connectivity and advanced data features to make full use of Oracle Database. The libraries are used by the Oracle APIs of popular languages and environments including Python, Node.js, Go, PHP and Ruby, as well as providing access for Oracle Call Interface (OCI), Oracle C++ Call Interface (OCCI), JDBC OCI, ODBC and Pro*C applications. Tools included in Instant Client, such as SQL*Plus, SQL*Loader and Oracle Data Pump, provide quick and convenient data access.
Publisher’s description
What is Instant Client for Microsoft Windows?
Instant Client for Microsoft Windows by Oracle Corporation is free Windows software.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. The main installer is 137.7 MB. It runs without installation (portable).
Pros / Cons
Pros
- Free to use
- Portable: runs without installation
Cons
- No native ARM64 build
- No update for more than a year
In short: Instant Client for Microsoft Windows is a free Windows tool for 64-bit PCs. Updates have slowed down.
Is Instant Client for Microsoft Windows safe to download?
- The file is served by download.oracle.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
8FF61B58E810C91B0C340559AABE8B057F0A308AD80C94ABA57920CA4A6E1736· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 23.9.0.25.07Latest | August 20, 2025 | 137.7 MB | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id Oracle.InstantClient.Basic -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- Oracle Corporation
- Licence
- Oracle No-Fee Terms and Conditions
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 23.9.0.25.07
- Released
- August 20, 2025
- Added to the catalogue
- October 7, 2025
- Versions listed
- 1
- Website
- oracle.com
- winget ID
- Oracle.InstantClient.Basic
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is Instant Client for Microsoft Windows free?
Yes. Instant Client for Microsoft Windows is free to use.
Is Instant Client for Microsoft Windows safe to download?
The download comes from download.oracle.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Instant Client for Microsoft Windows with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does Instant Client for Microsoft Windows run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Can I use Instant Client for Microsoft Windows without administrator rights?
Yes, it is portable: unpack and run it.
