should be ~600–800 MB.
: Some legacy links still host 12c Release 2 (12.2) downloads for Windows and Linux. Choosing the Right Installation Type
Oracle offers four distinct installation types to suit different needs: Oracle Instant Client Downloads for Linux x86-64 (64-bit) oracle 12c client download
: If you only need basic connectivity for OCI, OCCI, or JDBC-OCI applications, the Instant Client is a lightweight alternative that does not require a full installation.
| Client Type | Description | Best For | | :--- | :--- | :--- | | | Minimal installation. Contains the OCI (Oracle Call Interface) libraries, JDBC, and ODBC drivers. No GUI tools. | Application servers, users who only need connectivity without a user interface. | | Basic Light | Even smaller than Basic. Supports limited character sets and languages. | Small footprint deployments where disk space is tight. | | SQL*Plus Package | Adds the SQL Plus command-line interface to the Basic installation. | DBAs and developers who manage data via command line. | | JDBC Supplemental | Additional libraries for Java database connectivity. | Java-based application servers. | | Administrator | Includes all Basic tools plus Database Control, exp/imp utilities, and Data Pump. | Database Administrators (DBAs). | | Runtime | Includes Basic tools plus SQL Plus and OCI drivers. | Application deployment and developers. | | Instant Client | A repackaged version of Basic/SQL*Plus that requires no formal "installer" (just unzip). | Modern dev environments (Python, Node.js) and Docker containers. | should be ~600–800 MB
: This is the primary source for full clients. You must log in with a free Oracle account, search for "Oracle Database 12c," and select the "Oracle Database Client" package for your operating system (e.g., Windows x64 or Linux).
The Oracle 12c Client is a suite of tools that allows you to connect to an Oracle Database 12c server. Unlike the full database software, the "Client" is lightweight and is installed on machines (like application servers or developer workstations) that need to access the database remotely but do not host the database itself. | Client Type | Description | Best For
When you reach the download page, you will see several options. Choosing the correct one is critical:
If you do not want to edit files, you can connect directly using the syntax: sqlplus username/password@//hostname:port/servicename Example: sqlplus scott/tiger@//dbserver.example.com:1521/orcl