That setting is valid only for the duration of that command prompt. Once you close that session its value is lost. Set TNS_ADMIN using the Environment Variables dialog in Windows. My Toad 9 installation is only capable of seeing/using one of my 3 installed clients. It cannot locate my 11g or 12c instant clients. Toad 9 is very old and should not be expected to function with newer Oracle software. Note:This functionality requires version 16.2.0 or greater of the FlexNet inventory agent and also make sure that your downloadable libraries are kept up-to-date, to receive the latest recognition rules through the Application Recognition Library.In addition, bugs related to client detection and establishing connections have been fixed over the years.

For the general case, you might consider a Named User license type if manually creating your licenses or wherever possible, quote the SKU number for your version of Toad on your purchase, and allow the SKU library and PURL to propose an appropriate license for you. Users are called 'seats' in Toad-speak, except for Desktop Authority where a 'seat' means a device. Toad for Oracle generally requires user-based licensing, with no concept of license sharing (for example, when one user stops using the application, another cannot start using it under the same entitlement). The Toad License evidence may also be useful, for example, to recognize installations of the 30-day trial version of Toad for Oracle. Two new evidence types, Toad and Toad License, are available (currently, only the first of these is used for automatic linking to applications through the Application Recognition Library, but either may be used if you are manually creating application records and linking to evidence). IT Asset Management now reports installations of Toad for Oracle on Windows-based Oracle servers. Note:This feature is available with IT Asset Management.

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