Navicat failed to connect to database

Navicat failed to connect to the database. Personally summarized the reasons are divided into two categories: (recommended tutorial: navicat tutorial)

1: The reason for the Navicat software itself: It is actually the oci.dll file, which corresponds to an instantclient folder, which contains the oci.dll file

The instantclient folder of oci.dll is based on Those that require additional downloading can theoretically be placed on the computer at will, but we usually put them in the root directory of Navicat based on classification for easy management, and there can be multiple ones. We add suffixes to them. To distinguish the suitable environment, such as the suitable version and win.x32.x64.ios...

二: The reason for the connection attributes: account number, password, connection method, connection type... Because different databases are connected, the things that come out are slightly different

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