Windows: Local or Bequeath Connections As Sysdba Fail With TNS-12557 or TNS-12560
(Doc ID 397231.1)
Last updated on JANUARY 22, 2020
Applies to:Oracle Database Backup Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 184.108.40.206 to 220.127.116.11 [Release 8.1.7 to 11.2]
Oracle Net Services - Version 18.104.22.168 to 22.214.171.124 [Release 8.1.7 to 11.2]
Microsoft Windows x64 (64-bit)
Microsoft Windows (32-bit)
With a single installation of an older version Oracle database it was possible to use SQL*Plus with "connect / as sysdba" to make a local connection to the database. Since installing a higher version of product into a separate Oracle home, this method has started to fail with the following error:
This problem can arise when another installation of Oracle products into a separate ORACLE_HOME would cause this problem as it has changed the environment.
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