Connecting to external oracle database

1. How do I connect to an Oracle database from another computer?
2. How do I connect to Oracle database?
3. Can I connect to Oracle database without listener?
4. How do I enable remote access in Oracle?
5. How do you connect to a database in Unix?
6. How do I ping an Oracle database in Windows?
7. How do I connect to a database in Oracle SQL Developer?
8. How can I see all databases in Oracle?
9. Which Linux is best for Oracle Database?
10. How do I ping TNS in Oracle?
11. How do I know if Oracle Instant Client is working?
12. How can I check connection between application and database server?

How do I connect to an Oracle database from 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 do I connect to Oracle database?

To connect to Oracle Database from SQL*Plus:

1. If you are on a Windows system, display a Windows command prompt.
2. At the command prompt, type sqlplus and press the key Enter. SQL*Plus starts and prompts you for your user name.
3. Type your user name and press the key Enter. ...
4. Type your password and press the key Enter.

Can I connect to Oracle database without listener?

2 Answers. As @BalazsPapp mentioned, the oracle db can be connected locally even without a listener. ... As for how it does it, there is a special mechanism for this kind of connection, which allows a database to be administered without a working listener.

How do I enable remote access in Oracle?

To enable remote HTTP connection requests using the SQL Command Line:

1. Start the SQL Command Line and connect to the database as user SYSTEM . ...
2. At the SQL Command Line prompt, enter the following command: EXEC DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);

How do you connect to a database in Unix?

Do the following steps to start SQL*Plus and connect to the default database:

1. Open a UNIX terminal.
2. At the command-line prompt, enter the SQL*Plus command in the form: $> sqlplus.
3. When prompted, enter your Oracle9i username and password. ...
4. SQL*Plus starts and connects to the default database.

How do I ping an Oracle database in Windows?

Oracle Net Manager

1. Start Oracle Net Manager. See Also: ...
2. In the navigator, expand Directory or Local > Service Naming.
3. Select the net service name or database service.
4. Choose Command > Test Net Service. Testing assumes that the database and listener are running. ...
5. Click Close to dismiss the Connect Test dialog box.

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

Configure Oracle SQL Developer Cloud Connection

1. Run Oracle SQL Developer locally. The Oracle SQL Developer home page displays. ...
2. Under Connections, right click Connections. ...
3. Select New Connection. ...
4. On the New/Select Database Connection dialog, make the following entries: ...
5. Click Test. ...
6. Click Connect. ...
7. Open the new connection.

How can I see all databases in Oracle?

To find active (i.e. started) databases, look for *_pmon_* processes on Unix (there's one per database instance), and Oracle services on Windows. To locate installations of Oracle database software, look at /etc/oratab on Unix. This should contain all the ORACLE_HOME s installed.

Which Linux is best for Oracle Database?

As per my experience Oracle Enterprise Linux is best for Oracle products. oracle linux which suits best for oracle real application cluster. I think it depends much on the admin taste, I have run oracle databases on redhat, aix, sco, centos, and of course solaris, in all of them worked perfect.

How do I ping TNS in Oracle?

Start Oracle Net Manager. In the navigator, expand Directory or Local, and then select Service Naming. Select the net service name or database service. Choose Command, and then select Test Net Service.

How do I know if Oracle Instant Client is working?

Go to a different directory from the one on which you installed Oracle's Instant Client and enter the following command: sqlplus scott@bigdb/tiger select user from dual; If this test is successful, you are ready to use the run-time.

How can I check connection between application and database server?

To check if the SQL Server Instance port is opened or not, you should run the telnet command from the application server.
...
Create SQL Server Alias CLICong. EXE

1. Go to the “Alias” Tab.
2. Check “TCP / IP”.
3. Provide the Alias Name.
4. Provide the Server name and the SQL Server port.