Can I connect to Oracle database without listener?

Can I connect to Oracle database without listener?

Yes, but you omit the @db component and so will need ORACLE_SID defined so that it knows which instance to try to connect to.

How do I connect to an Oracle database remotely?

To initiate a remote connection from the SQL Command Line using the Oracle Database XE: On the remote computer, start a terminal session (Linux) or open a command window (Windows.) If prompted for host credentials, log in to the remote computer.

How do I connect to Sqlplus remotely?

To connect to a remote database when you start SQL*Plus, include the Oracle Net service name in your SQLPLUS command in one of the following forms: SQLPLUS HR@connect_identifier. SQLPLUS HR/HR@connect_identifier.

How do I connect an Oracle database to another computer?

4.4 Connecting to an Oracle Database from a Client Computer

1. (UNIX, Linux, or Windows systems) Open a command window and enter the following command: sqlplus.
2. (Windows systems only) Click Start, select Programs (or All Programs), then Oracle – HOME_NAME, then Application Development, and then SQL*Plus.

How can I connect to database without entry TNS?

How to connect sqlplus without tnsnames. ora

1. 1) EZCONNECT. EZCONNECT is Oracle’s easy connect naming method.
2. Syntax of EZCONNECT: sqlplus username/password@[//]host[:port][/service_name]
3. Example:
4. Example:
5. 2) TNS Connect String.
6. Syntax of TNS Connect String.
7. Example.
8. Related Posts.

How do I connect my Ezconnect?

To enable Easy Connect Naming from Net Manager:

1. From the Available Methods list, select EZCONNECT, and then click the right-arrow button.
2. From the Selected Methods list, select EZCONNECT, and then use the Promote button to move the selection to the top of the list.
3. Choose File > Save Network Configuration.

How do I connect to a remote database in SQL Developer?

Connecting Remotely to the Database by Using Oracle SQL Developer

1. Open SQL Developer. Right-click Connections and select New Connection.
2. Provide the following information and then click Test. Connection Name: Create a name for this connection.
3. If your test results show success, click Connect.

Which command is used to connect select a database?

You can use the SQL command use to select a database.

1. Example. Here is an example to select a database called TUTORIALS − [root@host]# mysql -u root -p Enter password:****** mysql> use TUTORIALS; Database changed mysql>
2. Syntax. mysqli_select_db ( mysqli $link , string $dbname ) : bool.
3. Example.
4. Output.

How do I connect to a database in Sqlplus?

Starting SQL*Plus Command-line

1. Open a UNIX or a Windows terminal and enter the SQL*Plus command: sqlplus.
2. When prompted, enter your Oracle Database username and password.
3. Alternatively, enter the SQL*Plus command in the form: sqlplus username/password.
4. SQL*Plus starts and connects to the default database.

How do I connect to Oracle database from Windows?

To connect to Oracle Database from SQL Developer:

1. Access the menu from which you can select SQL Developer:
2. Select Oracle – ORACLE_HOME.
3. Select Application Development.
4. Select SQL Developer.
5. In the navigation frame of the window, click Connections.
6. In the Connections pane, click the icon New Connection.

Where is the Tnsnames Ora file located?

ORACLE_HOME/network/admin directory
By default, the tnsnames. ora file is located in the ORACLE_HOME/network/admin directory. Oracle Net will check the other directories for the configuration file. For example, the order checking the tnsnames.

What is the connect identifier in Oracle?

A “connect identifier” is an identification string of a single set of connection information to a specific target database instance on a specific Oracle server. Connect identifiers are defined and stored in a file called tnsnames.ora located in $ORACLE_HOME/network/admin/ directory.