| Feature | Oracle Client (Full) | Oracle Instant Client | | :--- | :--- | :--- | | | ~700 MB – 1.2 GB | ~70 – 150 MB | | Components | SQL*Plus, import/export utilities, ODBC drivers, OLE DB, .NET providers, JDBC-OCI, Net Configuration Assistant | Core libraries (OCI, OCCI, ODBC, JDBC-OCI) | | Administration tools | Yes (Net Manager, TNSPING) | No (requires manual configuration) | | Best for | Developers, DBAs, complex setups | Lightweight app deployment |

Before downloading, you must click the box to accept the . This agreement allows you to use the client for free for development, testing, and production use (provided you are not embedding it into a commercial application without a separate agreement).

That’s it. Your 32-bit apps can now connect via OCI or ODBC.

Instead of 11g client on Windows 10:

: Installs the basic client and networking components.

Search for "Edit the system environment variables" in your Windows 10 search bar. Under the tab, click Environment Variables .