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Here is the method to connect to the oracle database using sqlplus
without configuring the TNSNAMES from the OS prompt.
Syntax: sqlplus
username/password@Host_name:Listener_port/database_Service_name
Where you must know the username and password for the database.
You can use following options to find out the hostname, Listener port and
database service name
SQL> select host_name from v$instance;
HOST_NAME
------------------------------
ora01test.bcndualgate.net
SQL> show parameter service
NAME TYPE VALUE
------------------------------------
-------------------------------- -------
service_names string TEST
$ lsnrctl status
LSNRCTL for Linux: Version 12.1.0.2.0 - Production on
23-MAR-2017 05:35:27
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ora01test.bcndualgate.net)(PORT=1521)))
$ sqlplus
sthomas/tiger123@ora01test.bcndualgate.net:1521/TEST
SQL*Plus: Release 12.1.0.2.0 Production on Thu Mar 23 05:37:01
2017
Copyright (c) 1982, 2014, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 -
64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real
Application Testing options
SQL> show user
USER is "STHOMAS"
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