Toad 9.7 did not have a 64 bit version. Remember that a 64 bit OS can run both 32 and 64 bit programs. It sounds like the client you used in 9.7 was indeed 32 bit and the client you’re using for 12.7 is indeed 64 bit so they are not compatible.
You either need to get a 64 bit version of the client you used for 9.7 or you need to use the 32 bit version of 12.7.
From: pankaj.marchand [mailto:firstname.lastname@example.org]
Sent: Friday, June 24, 2016 12:23 PM
Subject: RE: [Toad for Oracle - Discussion Forum] New Toad Version on same machine not able to detect Oracle Home, why and how can this be solved?
RE: New Toad Version on same machine not able to detect Oracle Home, why and how can this be solved?
Reply by pankaj.marchand
Yes i verified. My new version is 64 bit , However older version does not mention the same in Support Bundle, but that too should be in 64 bit otherwise how will that be installed in 64 bit machine.(I assume). But more important is why the new version can not detect the same and why the Dell has not provided the option to manually be map to correct TNS if that is so much trouble.
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