Connect to Oracle DB using sqlplus

Question

I am using below command in Unix environment to connect to Oracle database:

sqlplus test/test@'(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=hostname.com )(PORT=1521)))(CONNECT_DATA=(SID=mysid))'

But I am getting below error:

Use SQL*Plus to execute SQL, PL/SQL and SQL*Plus statements.

Usage 1: sqlplus -H | -V

    -H             Displays the SQL*Plus version and the
                   usage help.
    -V             Displays the SQL*Plus version.

Usage 2: sqlplus [ [<option>] [{logon | /nolog}] [<start>] ]

  <option> is: [-C <version>] [-L] [-M "<options>"] [-R <level>] [-S]

Please help me where I am doing mistake in using the command.

Answer 1

try this: sqlplus USER/PW@//hostname:1521/SID

Answer 2

sqlplus username/password@database

Eg:

sqlplus hr/hr@orcl

Answer 3

Different ways to connect Oracle Database from Unix user are:

[oracle@OLE1 ~]$ sqlplus scott/tiger

[oracle@OLE1 ~]$ sqlplus scott/tiger@orcl

[oracle@OLE1 ~]$ sqlplus scott/[email protected]:1521/orcl

[oracle@OLE1 ~]$ sqlplus scott/tiger@//192.168.244.128:1521/orcl

[oracle@OLE1 ~]$ sqlplus "scott/tiger@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ole1)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl)))"

Please see the explanation at link: https://stackoverflow.com/a/45064809/6332029

Thanks!

Answer 4

Easy way (using XE):

1). Configure your tnsnames.ora

XE =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = HOST.DOMAIN.COM)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = XE)
    )
  )

You can replace HOST.DOMAIN.COM with IP address, the TCP port by default is 1521 (ckeck it) and look that name of this configuration is XE

2). Using your app named sqlplus:

sqlplus SYSTEM@XE

SYSTEM should be replaced with an authorized USER, and put your password when prompt appear

3). See at firewall for any possibilities of some blocked TCP ports and fix it if appear