How to use Oracle to connect to a database
Step 1: Get connection information
To connect to an Oracle database, you need the following information:
- Host name or IP address
- Port number (default is 1521)
- Service name or SID
- username
- password
Step 2: Connect with SQL*Net
Windows:
- Open a command prompt or PowerShell.
-
Enter the following command, where:
-
<hostname></hostname>
: database host name or IP address -
<port></port>
: Database port number -
<servicename></servicename>
: Database service name -
<username></username>
: Database username -
<password></password>
: Database password
<code>sqlplus <username>/<password>@<hostname>:<port>/<servicename></servicename></port></hostname></password></username></code>
-
Linux/Mac:
- Open the terminal.
-
Enter the following command:
<code>sqlplus <username>/<password>@(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=<hostname>)(PORT=<port>))(CONNECT_DATA=(SERVICE_NAME=<servicename>)))</servicename></port></hostname></password></username></code>
Step 3: Verify the connection
After the connection is successful, you will see an output similar to the following:
<code>SQL*Plus: Release 19.0.0.0.0 - Production on Fri Jan 13 10:58:44 2023 Version 19.15.0.0.0 Copyright (c) 1982, 2022, Oracle Corporation. All rights reserved.</code>
Other methods
In addition to SQL*Net connection, you can also connect to an Oracle database using the following methods:
- Oracle OCI (Oracle Call Interface)
- JDBC (Java Database Connectivity)
- ODP.NET (Oracle Data Provider for .NET)
The above is the detailed content of How to connect to the database. For more information, please follow other related articles on the PHP Chinese website!

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