Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium



Posted on 2003-03-15
Medium Priority
Last Modified: 2012-05-04
I succeeded to log onto sql_plus 3.1 using username: scott and password: tiger and left the hoststring blank. But later on when I tried again I failed. The message:
ERROR: ORA-03121: (Cnct err, can't get err txt.  See Servr Msgs & Codes Manual)
ERROR: ORA-09354: (Cnct err, can't get err txt.  See Servr Msgs & Codes Manual)

Help me!!!
Question by:poobalan18

Expert Comment

ID: 8146050
When you tried the 2nd time did you do it with host string.
It appears you need to install/configure sql*net again.
Can you get connected without host string. I assume you
are doing this locally from the server. What is OS and Oracle version?
LVL 21

Expert Comment

ID: 8146811
Look for Your question at:
http://otn.oracle.com/pls/db92/db92.error_search?search='Your Error here'

ORA-03121 no interface driver connected - function not performed
This is the only what I found:
If you are using an Oracle V6 based application you will get an ORA-03121 when  trying to connect via SQL*Net V2 if you don't use the "tns:" net prefix in the  connect string.  An Oracle V6 based application means that the application is  linked to use ORA6WIN.DLL.  If the application is linked to use ORA7WIN.DLL,  the "tns:" prefix is not needed.      

Expert Comment

ID: 8148136
u can try shutting down oracle database,restarting it and then trying again. this error sometimes comes if the oracle task dies unexpectedly
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.


Expert Comment

ID: 8150454
Hi Poobalan18,

Reinstalling would help, I suppose some DLLs are missing or have gone corrupt.




LVL 35

Expert Comment

by:Mark Geerlings
ID: 8152671
Don't re-install anything yet.  Please give us some more information.

1. Did you only succeed in logging in to SQL*Plus just one time, and every other attempt failed?

2.  Where is the database, on your PC, on a network server, etc?

3. Which Oracle software do you have installed on the machine you are using SQL*Plus on?  Oracle client software only (which version)?  Also Oracle database software (which version)?

Expert Comment

ID: 8171005
You need to set your $ORACLE_HOME .... your environment does not know where it is ....

Accepted Solution

amp072397 earned 0 total points
ID: 10636860
PAQed - no points refunded (of 250)

Thanks very much!
amp, ee admin, amp*at*experts-exchange.com

Featured Post

Get your Disaster Recovery as a Service basics

Disaster Recovery as a Service is one go-to solution that revolutionizes DR planning. Implementing DRaaS could be an efficient process, easily accessible to non-DR experts. Learn about monitoring, testing, executing failovers and failbacks to ensure a "healthy" DR environment.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I remember the day when someone asked me to create a user for an application developement. The user should be able to create views and materialized views and, so, I used the following syntax: (CODE) This way, I guessed, I would ensure that use…
This post first appeared at Oracleinaction  (http://oracleinaction.com/undo-and-redo-in-oracle/)by Anju Garg (Myself). I  will demonstrate that undo for DML’s is stored both in undo tablespace and online redo logs. Then, we will analyze the reaso…
Via a live example show how to connect to RMAN, make basic configuration settings changes and then take a backup of a demo database
This video shows how to copy a database user from one database to another user DBMS_METADATA.  It also shows how to copy a user's permissions and discusses password hash differences between Oracle 10g and 11g.

578 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question