When selecting 'Test Connections (Reconnect)' Access Violation errors are generated.
Oracle client is not supported by Toad for Oracle.
Confirm that a supported Oracle is being used with Toad for Oracle.
The latest release notes can be viewed here: https://support.quest.com/toad-for-oracle/12.10/download-new-releases
Drill to Release Notes | System Requirements | Database requirements
To download a supported oracle client:
With a search engine, search for “Oracle Client downloads”.
Browsing by Category drill to Database | Database (version) Enterprise/Standards editions| Downloads .
