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Attempting to connect a 64-bit application to a 32-bit Oracle Client (or vice versa) will result in the infamous "ORA-12154: TNS:could not resolve the connect identifier specified" or "Provider cannot be found" errors. oracle client download 64-bit
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Gone are the days when 32-bit computing was the norm. Modern operating systems (Windows 10/11, Windows Server 2016/2019/2022) are almost exclusively 64-bit. oracle client download 64-bit