# Using wrong ORACLE\_HOME

**URL:** <https://forums.toadworld.com/t/using-wrong-oracle-home/33657>\
**Category:** Toad for Oracle & DevOps Toolkit\
**Created:** [June 29, 2015, 1:32pm UTC](https://forums.toadworld.com/t/using-wrong-oracle-home/33657 "2015-06-29T13:32:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![schwartzl](https://avatars.discourse-cdn.com/v4/letter/s/5fc32e/32.png) [@schwartzl](https://forums.toadworld.com/u/schwartzl)\
**Post date:** [June 29, 2015, 1:32pm UTC](https://forums.toadworld.com/t/using-wrong-oracle-home/33657/1 "2015-06-29T13:32:17Z")

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I just re-installed Oracle Forms/Reports (v11.1.2.2) - I replaced the 64bit version with the 32bit (we were having issue with the 64bit).

After the 32bit installation, TOAD is still pointing to the 64bot ORACLE\_HOME in “HKEY\_LOCAL\_MACHINE\SOFTWARE\ORACLE\KEY\_OH66220856” instead of “HKEY\_LOCAL\_MACHINE\SOFTWARE\Wow6432Node\ORACLE\KEY\_OH218692153”

Thus I get a “Can’t find OCI.DLL” error.

I can’t find the way to add/select the correct ORACLE\_HOME.

Please advice.

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**Author:** ![JohnDorlon](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/johndorlon/32/9997_2.png) [@JohnDorlon](https://forums.toadworld.com/u/JohnDorlon)\
**Post date:** [June 29, 2015, 1:35pm UTC](https://forums.toadworld.com/t/using-wrong-oracle-home/33657/2 "2015-06-29T13:35:41Z")

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On the login dialog, look for a dropdown labeled “Connect Using”. You can use that to choose which Oracle home to use.

Be aware that 64 bit Toad requires a 64 bit Oracle client, and 32 bit Toad requires a 32 bit Oracle client.