Troubleshooting Guide for ORA-12545 / TNS-12545 Connect failed because target host or object does not exist
(Doc ID 553328.1)
Last updated on AUGUST 16, 2023
Applies to:
Oracle Net Services - Version 9.2.0.8 to 19.5.0.0.0 [Release 9.2 to 19] Oracle Database - Enterprise Edition - Version 9.2.0.8 to 19.5.0.0.0 [Release 9.2 to 19] Information in this document applies to any platform.
Purpose
Aids in explaining, diagnosing and resolving the TNS-12545 error or 'host or object does not exist'. This is an error that typically occurs when a hostname is not resolveable to Oracle.
Troubleshooting Steps
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