Toad
If there is a TNS_ADMIN key set in the environment variables then this is the tnsnames.ora file that TOAD will read even if there is a TNS_ADMIN key in the registry.
The environment always overrides the registry, so if TNS_ADMIN is set in the environment, then that takes precedence over the TNS_ADMIN setting in the registry. No variables should be set in the environment by the Oracle Home Selector except for the PATH.
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