: This version includes only the essential libraries needed for applications (OCI, OCCI, and JDBC-OCI) to connect to a database. It does not require a support contract for the download. You can find the instantclient-basic-nt-11.2.0.4.0.zip package on the Oracle Instant Client for Windows 32-bit page Full Client (Requires Support Contract)
Oracle Database 11g Release 2 (11.2.0.4) holds a special status. It was the final Patch Set for the 11g family, often referred to as the "terminal release." This means: oracle client 11.2.0.4 download 32 bit
Oracle provides older client versions through its (formerly OTN). You’ll need an Oracle account (free to create). : This version includes only the essential libraries