Comments on: LOCAL_LISTENER and ORA-12545

By: Deepa

Deepa — Wed, 15 Jun 2011 19:14:49 +0000

Hey
Thank you so much!!!
I had been struggling to connect to oracle database from my remote desktop for 2 days now.
It’s 11gR2, Oracle has introduced new SCAN on top of node VIP’s.
None of my ip’s were in DNS (i was doing a test setup using /etc/hosts).
SCAN was sending back one of the node VIP name, my desktop does not know what ip to resolve that name to. I has only SCAN ip in my hosts files.
** I didn’t realize that SCAN is sending one of node VIP “name” back, and of course as it was not on DNS, my desktop has no idea what was returned from server.**
Your blog was a nail on the head, all i had to do is add node VIPs to my hosts file, boom! connection went through.
I can’t thank you enough!!!

By: Pradeep

Pradeep — Tue, 25 Jan 2011 14:25:52 +0000

Jeremy,
How do I identify in the listener logs a direct connection as opposed to one that was redirected from the other node?

Thanks

By: arvind

arvind — Thu, 16 Sep 2010 09:23:48 +0000

Hi, Thanks for this article – found that there is old listener entry registered under this parameter. There is no issue in connection either from server and from client -a s using the Vitual IP address and $TNS_ADMIN entry in the client machine, however under my Oracle Fail Safe environment…
DBCONSOLE services status shows “ONLINE-PENDING”

This shows the listener working – probably taking from the listener.ora….

Does this DBCONSOLE service pending due to the wrong listener entry?

Can provide you full details….help will be much appreciared if possible ASAP -a s need to work to sort out this tomorrow in afternoon session.

Best Regards,

By: A.S.

A.S. — Wed, 09 Jun 2010 15:44:29 +0000

I don’t like the idea of “hardcoding” IP addresses in a RAC environment.

How about adding entries to the client’s hosts file so that it can resolve?

By: saurabh

saurabh — Thu, 08 Oct 2009 06:12:03 +0000

Thank you so much. I was facing the similar issue and this has helped me a lot. thanks

By: atila santos

atila santos — Fri, 19 Dec 2008 00:03:06 +0000

I’d like to say thanks, because your explanation has help me to find out the solution which was worried me, exactly in a moment of migration of single instance 9.0.2.5 to Oracle cluster 9.2.0.3 and database patch set 10.2.0.4. Every thing was good, fail node simulation , excellent performance with asm storage,etc. But the connections was refused 2 or 3 times (or more) until get connect to host server. In my place we use 3 kinds of applications (WEB-PHP, ,ERP and Delphi). The only application without ORA-12545 was WEB-PHP.
My RAC enviroment is (2 nodes – intel quad-core), and NAS – OPENFILER 32 bits with asm storage using normal redudance).

By: sudarshan

sudarshan — Tue, 19 Aug 2008 05:20:01 +0000

thank you very much sir. your solution fit to our situation perfectly and our problem has got solved. We added hosts file to resolve the hostnames problme with name resolution in windows client.

thanks a lot

By: Niranjan

Niranjan — Thu, 31 Jul 2008 07:23:32 +0000

Can anybody tell me how to enable client level tracing also the logfiles where it will reside.

By: WILL DC

WILL DC — Wed, 21 May 2008 19:32:41 +0000

What if you know the syntax for the address parameters are correct, I have tried diffrent configurations and ways of connecting but no luck. Is there anything on the server side that would cause someone not see the server? I can ping the server and it will respond back but as soon as I enter the hostname and other info I get the “ORA-12545: Connect failed because target host or object does not exist” message? What gives.

By: Hemant

Hemant — Fri, 29 Jun 2007 15:23:05 +0000

Questions for Atul :
1. Is this an RAC database ?
2. Are you using and Oracle SQLPlus client
(which version) or a non-oracle tool and Oracle Client libraries ?
3. Is there a Firewall between the client and database server ?