Troubleshooting Guide for ORA-12514 TNS:listener could not resolve the service requested in connect descriptor
(Doc ID 444705.1)
Last updated on JANUARY 16, 2025
Applies to:
Oracle Net Services - Version 9.2.0.8 and laterOracle Database - Enterprise Edition - Version 19.3.0.0.0 to 19.3.0.0.0 [Release 19]
Oracle Database - Enterprise Edition - Version 9.2 and later
Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Information in this document applies to any platform.
Purpose
This is a step-by-step troubleshooting guide for error:
ERROR:
ORA-12514 / TNS-12514: TNS:listener could not resolve SERVICE_NAME given in connect descriptor
This error can occur when connecting directly to the database or when selecting across a database link (dblink). The troubleshooting steps outlined below are applicable to either situation.
Troubleshooting Steps
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In this Document
| Purpose |
| Troubleshooting Steps |
| References |