Oracle Client 11.2.0.4 (11g Release 2, patchset 4) is a legacy Oracle Database client version used to connect applications to Oracle databases. Use the 32-bit build when your application or ODBC/OLE DB drivers require a 32-bit runtime (for example, 32-bit Windows apps or old middleware). This guide covers where to get the client, download considerations, installation steps on Windows, common configuration tasks, and troubleshooting.
That will restore compatibility with the old 11g client. oracle client 11204 download 32 bit work
If you are running this 32-bit client on a 64-bit Windows machine, there are two common "gotchas": Oracle Client 11
Follow this guide step by step, and you will transform a frustrating search into a stable, working connection. installation steps on Windows