Oracle 10g sqlplus login problems

Posted on 2007-04-07
Medium Priority
Last Modified: 2013-12-18
I am running a server which I am connected to remotely.  The server OS is Red Hat Linux Enterprise 5 and the software giving me the problems is Oracle 10g version 10.2.0

I was originally getting this error when trying to enter sqlplus:

ORA-12162: TNS:net service name is incorrectly specified

However, I fixed that by running this command:
     export ORACLE_SID="system"

and now I get these problems when I try to sign into sqlplus:

ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory

I have tried restarting the server and this has not corrected any problems.  Does anyone have any ideas?
Question by:spitfire0010
1 Comment

Accepted Solution

Blue5Wing earned 200 total points
ID: 18871693
1. Check if your Oracle database is started.

2. Check the ORACLE_HOME environment variable if it matches the ORACLE_HOME used to start the database, as it is defined in /var/opt/oracle/oratab. In oratab you will find entries like this:


In this case /u01/app/oracle/product/10g is ORACLE_HOME, DEMO is the SID, Y means it is started automatically at system boot.
You also need to set ORACLE_BASE.

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

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

In my business, I use the LTS (Long Term Support) versions of Linux. My workstations do real work, and so I rarely have the patience to deal with silly problems caused by an upgraded kernel that had experimental software on it to begin with from a r…
You ever wonder how to backup Linux system files just like Windows System Restore?  Well you can use Timeshift in Linux to perform those similar action.  This tutorial will show you how to backup your system files and keep regular intervals. Note…
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.
Via a live example, show how to restore a database from backup after a simulated disk failure using RMAN.

627 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