Today, when the toad adjustment setting of the software is completed, click OK to always report
error: the following files specified on the executables tab could not be found: TNS Ping, as shown in the following figure
in fact, it is mainly caused by the setting problems in other places in the option, here we just need to modify the setting,
Select View toad options editor executables TNS Ping. Then check whether the path of your own command in the figure below is correct, or you can directly click the “auto search” button to automatically obtain the correct path 
After that, click OK in other options in toad, and no error will be reported.
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