User is having "ORA-12547: TNS:lost contact" error when trying to use sqlplus / as sysdba
(Doc ID 3048469.1)
Last updated on SEPTEMBER 18, 2024
Applies to:
Oracle Database - Enterprise Edition - Version 19.3.0.0.0 and laterOracle Cloud Infrastructure - Exadata Cloud Service - Version N/A to N/A [Release N/A]
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A to N/A
Gen 2 Exadata Cloud at Customer - Version N/A to N/A [Release All Releases]
Information in this document applies to any platform.
Symptoms
When trying to set Oracle environment variables, user is having "ORA-12547: TNS:lost contact" error:
[oracle@hostname ~]$ export ORACLE_BASE=/app/oracle
[oracle@hostname ~]$ export ORACLE_HOME=/app/oracle/product/19.3/db_19
[oracle@hostname ~]$ export PATH=$ORACLE_HOME/bin:$PATH
[oracle@hostname ~]$ export ORACLE_SID=orcl
[oracle@hostname ~]$ sqlplus / as sysdba
SQL*Plus: Release 19.0.0.0.0 - Production on Tue Aug 13 14:22:52 2024
Version 19.18.0.0.0
Copyright (c) 1982, 2022, Oracle. All rights reserved.
ERROR:
ORA-12547: TNS:lost contact
Changes
None
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |