ORA-28547 - "connection to server failed, probable Oracle Net admin error" when Database sessions touched 18,000

From: VIVEK_SHARMA <VIVEK_SHARMA_at_infosys.com>
Date: Thu, 10 Jan 2008 06:08:41 +0530
Message-ID: <69E1360E54B50C4A828A136C158E4742036A70764D@BLRKECMBX02.ad.infosys.com>


During a Benchmark Run as Number of Database sessions increased to 18000 following Error Occured:-

ORA-28547 "connection to server failed, probable Oracle Net admin error"

Qs Will increasing the Number of Listener processes help?

ACTION - Listener processes have been increased from 12 to 16. But need to check if the error re-occurs or is resolved.

Qs Could it be a Network bandwidth issue?

Currently all 16 Listener processes sit on the SAME ( 1 ) Network Card, but use different Port Numbers.

Database setup - Shared Server (MTS)

Oracle (NON-RAC)

Solaris 10

Will share any info needed.



$ oerr ora 28547:-

*Action: Check Oracle Net administration in the following ways:

//           --  When using TNSNAMES.ORA or an Oracle Names server, make sure

// that the client connection to the ORACLE server uses
// the correct service name or SID.
// -- Check LISTENER.ORA on the connection end point's host machine
// to assure that this service name or SID refers
// to the correct server.
// -- Confirm in TNSNAMES.ORA or the equivalent service definition
// that the connect string does NOT contain (HS=).
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http://www.freelists.org/webpage/oracle-l Received on Wed Jan 09 2008 - 18:38:41 CST

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