Oracle 10G connection problem

Question

Oracle 10G connection problem
I launch my db with the following script:
su - oracle -c "export ORACLE_HOME=/u01/app/oracle/product/10.1.0/db_1 && /u01/app/oracle/product/10.1.0/db_1/bin/dbstart"
su - oracle -c "export ORACLE_HOME=/u01/app/oracle/product/10.1.0/db_1 && /u01/app/oracle/product/10.1.0/db_1/bin/lsnrctl start"
Here is the output:
SQL*Plus: Release 10.1.0.2.0 - Production on Fri Feb 27 22:17:51 2004
Copyright (c) 1982, 2004, Oracle. All rights reserved.
SQL> Connected to an idle instance.
SQL> ORACLE instance started.
Total System Global Area 188743680 bytes
Fixed Size 778036 bytes
Variable Size 162537676 bytes
Database Buffers 25165824 bytes
Redo Buffers 262144 bytes
Database mounted.
Database opened.
SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
Database "orcl" warm started.
LSNRCTL for Linux: Version 10.1.0.2.0 - Production on 27-FEB-2004 22:17:59
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Starting /u01/app/oracle/product/10.1.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.1.0.2.0 - Production
System parameter file is /u01/app/oracle/product/10.1.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.1.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=xavan_fi
xe)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 10.1.0.2.0 - Production
Start Date 27-FEB-2004 22:17:59
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/10.1.0/db_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/product/10.1.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=xavan_fi
xe)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
But when i try to connect with sqlplus:
oracle@xavan_fixe oracle $ sqlplus
SQL*Plus: Release 10.1.0.2.0 - Production on Ven. Févr. 27 22:19:32 2004
Copyright (c) 1982, 2004, Oracle. All rights reserved.
Enter user-name: scott
Enter password:
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory

Answer 1

When you go to get connection you have to set the ORACLE_SID enviroment variable or use the service name in the string to get connection.
Joel Pérez