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OLOGGERD Reporting 'Fatal NI Connect Error 12516, Connecting To:' or ''Fatal NI connect error 12514, connecting to:' Messages In Clusterware Alert.log (Doc ID 2399048.1)

Last updated on JUNE 12, 2023

Applies to:

Oracle Exadata Storage Server Software - Version and later
Oracle Database - Enterprise Edition - Version to [Release 12.1]
Oracle Database - Enterprise Edition - Version to [Release 12.2]
Information in this document applies to any platform.


On : Exadata Upgrade to


GI Upgrade only

Clusterware alert log on Exadata Compute Node reporting constant 'Fatal NI connect error 12516, connecting to' error messages.


- Excerpt from alert.log:

Fatal NI connect error 12516, connecting to:

  TNS for Linux: Version - Production
  TCP/IP NT Protocol Adapter for Linux: Version - Production
 Time: 08-MAY-2018 10:19:23
 Tracing not turned on.
 Tns error struct:
  ns main err code: 12564

TNS-12564: TNS:connection refused
  ns secondary err code: 12560
  nt main err code: 524

TNS-00524: Current operation is still in progress
  nt secondary err code: 115
  nt OS err code: 0


Errors come after the Grid Infrastructure was upgraded to 12.2 from Platinum Patching activity.

Constant errors in clusterware log.


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