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I have a serious problem with toad oracle client. I got the error message as following when I open toad client (installed and then opened it):

Error: No valid Oracle clients found. You need at least one 64-bit client properly configured

Please do me a favor to give me how to deal with this issue or give me any slim clue.

Download from toad official website with 64-bit like as following picture

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Depending on YouTube video from @Philᵀᴹ, I have done this problem and I will try to list all I know and every step as following content, Hopefully I can help someone who has the same issues.

  1. Download and Install Toad for Oracle v12.10

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  2. Open it you should can not use like as below error message

    enter image description here

  3. Download Instant Client 12.2

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  4. Unzip it and move it to anywhere you like (for example C:\app\instantclient_12_2)

    enter image description here

  5. Go to Control Panel\All Control Panel Items\System-->Environment Variable to "Add" TNS_ADMIN as like below picture

    enter image description here

  6. The same path to "Edit" Path like as following picture

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    OK done with toad client

    enter image description here

  7. To move your old tnsnames.ora to C:\app\instantclient_12_2 (for example)

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Done all

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