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Sql*Plus Returns Error "TNS-12560: TNS:protocol adapter error" when Trying to Establish a Connection with Oracle Autonomous Data Warehouse using Wallet (Doc ID 2861183.1)

Last updated on JULY 04, 2023

Applies to:

SQL*Plus - Version 19.3 to 21.3
Information in this document applies to any platform.


When trying to connect to Oracle Autonomous Data Warehouse using Wallet via Sql*Plus with Instant Client version 21.3, the following error is received:

The error was encountered even if the following actions were made:

sqlnet.ora file inside Instant client (e. g. C:\instantclient_21_3\network\admin) was amended to point to the directory which contains the wallet;
TNS_ADMIN environment variable was also set, pointing to the wallet location.




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