• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 38662
  • Last Modified:

Oracle tnsping error TNS-03505: Failed to resolve name

I'm re-learning client connectivity but obviously I've missed something.

I have two instances, ORACLE_SIDs= omf and orcl, both are using the same ORACLE_HOME.
I believe I've included all the relevant info in accompanying files.

I've designated a connect identifier "tns" in tnsnames.ora.
I cannnot > tnsping tns    nor > tnsping tns.websmiths.com.  I get 'failed to resolve name'.

Is it possible the instances retaining UNKNOWN status in listener are picking up the tnsping request and failing there?

On those UNKNOWN statuses, I (believe I've) tried every possible combination of initialization parameters LOCAL_LISTENER and DB_DOMAIN, and sqlnet.ora's NAME.DOMAIN_NAME, yet I can't stop/start listener and not have those after 'register'ing or waiting for auto registration.

ANY assistance to correct or that's beyond what I have shown here would be deeply appreciated.  I've put 20+ hours into this.  Generated a lot of my own documentation and more, but I'm obviously missing something.

Thank you.
host--Listener--and-InstanceS-st.txt
tnsnames.ora.txt
listener.ora.txt
sqlnet.ora.txt
initorcl.ora.txt
initomf.ora.txt
0
Ralph
Asked:
Ralph
  • 3
  • 3
1 Solution
 
Steve WalesSenior Database AdministratorCommented:
Your sqlnet.ora has this:

NAMES.DEFAULT_DOMAIN = websmiths.com

Your tnsnames.ora alias is:

tns =

I believe that since you've included a default domain, it's looking to append websmiths.com to your tns aliases.

Change the tns alias to be tns.websmiths.com (and then tnsping tns) or remove default_domain.
1
 
RalphAuthor Commented:
That worked!
But why?  I'd tried tnsping-ing both "tns" and "tns.websmiths.com".

> tnsping tns.        Apparently the NAMES.DOMAIN_NAME value  append to this "tns"?

If so, can you tell me where else does that domain designation get appended?

Thank you!
0
 
RalphAuthor Commented:
I can generate another question, but if you/anyone happen(s) to have a quick answer as to how to not have those additional service instances whose status remains UNKNOWN, MY remaining unknown will be resolved.
0
Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

 
Steve WalesSenior Database AdministratorCommented:
Domain designation gets appended to the end of the alias in tnsnames.ora.

You type "tnsping tns" and if you have default_domain set it is looking for an alias in tnsnames.ora called tns.websmiths.com.

Can't answer your remaining UNKNOWN at the moment, sorry
0
 
Steve WalesSenior Database AdministratorCommented:
Actually, the UNKNOWN is because you've static definitions of them in SID_LIST in listener.ora rather than having the listener auto detect them, I believe.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (ORACLE_HOME = /oraeng/app/oracle/product/11.2.0/dbhome_1)
      (SID_NAME = orcl.websmiths.com)
    )
    (SID_DESC =
      (ORACLE_HOME = /oraeng/app/oracle/product/11.2.0/dbhome_1)
      (SID_NAME = omf.websmiths.com)
    )
  )
0
 
slightwv (䄆 Netminder) Commented:
>>than having the listener auto detect them, I believe

Just for information:  The listener doesn't auto detect.  The instance registers itself with the listener when it starts.  The instance looks for a default listener or for whatever the local_listener spfile parameter is set to.
0
 
RalphAuthor Commented:
Thank you very much for your assistance.  Moving on now to master other interesting  features.
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Get expert help—faster!

Need expert help—fast? Use the Help Bell for personalized assistance getting answers to your important questions.

  • 3
  • 3
Tackle projects and never again get stuck behind a technical roadblock.
Join Now