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RDBPROD: SQLSRV-E-TNSFAILURE when trying to connect to Rdb database (Doc ID 1067042.1)

Last updated on MAY 03, 2018

Applies to:

Oracle SQL/Services for Rdb on OpenVMS - Version 7.3.0.2 and later
HP OpenVMS Alpha
HP OpenVMS Itanium

Symptoms

The OCI Services dispatcher log contains the error:

---EVENT BEG: EVENT_LOG ------------------------  ( date/time ) ---
%SQLSRV-I-EVENT_LOG, event logged at line nnnn  in file COM_TNS.C;1
%SQLSRV-E-TNSFAILURE, Oracle Net TNS nlnvgap() service has failed
---EVENT END: EVENT_LOG ------------------------  ( date/time ) ---

where nnnn is around 1920 (depending on the SQL Services version)

Cause

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