Troubleshooting Guide TNS-12519 TNS-12516 ORA-12519 ORA-12516
(Doc ID 552765.1)
Last updated on MARCH 29, 2024
Applies to:
Oracle Net Services - Version 9.2.0.8 to 12.2.0.1 [Release 9.2 to 12.2]Oracle Database - Enterprise Edition - Version 9.2.0.8 to 12.2.0.1 [Release 9.2 to 12.2]
Oracle Database - Standard Edition - Version 19.16.0.0.0 to 19.16.0.0.0 [Release 19]
Information in this document applies to any platform.
Purpose
Helps to understand these listener log errors. The circumstances under which they're thrown
and to aid in resolution.
TNS - 12519 TNS: no appropriate service handler found
TNS - 12516 TNS : listener could not find instance with matching protocol stack
You are facing TNS - 12519 / TNS - 12516 in the client application or Listener log.
Troubleshooting Steps
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In this Document
| Purpose |
| Troubleshooting Steps |
| Background Of The Error: |
| Known Issues : |
| Diagnostic Information : |
| References |