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TNS Names Resolution / LDAP Naming / TNSping via OID Fails for Some Database Entries with "TNS-03505: Failed to resolve name" and Sqlnet Trace Error "nnfun2a: address for name "<tnsnames entry>" not found (Doc ID 2985529.1)

Last updated on NOVEMBER 08, 2023

Applies to:

Oracle Internet Directory - Version 12.2.1.3.0 and later
Oracle Net Services - Version 12.1.0.1 and later
Information in this document applies to any platform.

Symptoms

TNS names resolution via LDAP naming to Oracle Internet Directory (OID) 12c suddenly fails for some database entries:

 

Changes

Nothing changed on this particular OID server other than OID was restarted due to recent OS patching.

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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