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Local SQL*Plus Connection and DBCA Fails With: ORA-12547: TNS:Lost Contact (Doc ID 422173.1)

Last updated on MARCH 31, 2022

Applies to:

Oracle Database Configuration Assistant - Version and later
Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Service - Version N/A to N/A [Release 1.0]
Oracle Solaris on x86 (32-bit)
HP-UX PA-RISC (64-bit)
Linux x86-64
Linux x86


Not able to make a local BEQUEATH connection (that is, without the TNS and Listener components).
So the following SQL*Plus attempt results in an error: 


Or when attempting to create a new instance through DBCA (Database Configuration Assistant). Having proceeded through all screens and completed the required input, you click the 'Finish' button, then the 'OK' button at the Confirmation screen, but immediately receive a dialogue box containing the following error message:




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