Can’t initialize OCI. Error – 1 appears in toad for Oracle

After normal installation of Oracle Client or Oracle DB, open Toad, click Connet, and report Can’t initialize oci. error-1.

Solutions:
(1) Environment variable: Simply set path and add the path of Oracle Client to path
(2) Network /admin: add tnsnames.ora and find one or copy one
(3) The key step: Copy Toad’s entire folder to the Oracle Client path

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