How to connect strings in oracle

In Oracle Database, the connection string contains: database host name or IP address, port number, database name, username, and password. Creating a connection string requires concatenating these parts with semicolons. Connecting to the database can use the JDBC API, ODP.NET, or SQL*Plus.

Methods of connection string in Oracle

In Oracle database, the connection string is used to specify the connection to Necessary information required by a database. The connection string contains the following parts:

• Database host name or IP address: Specify the host name or IP address of the computer where the database is located.
• Port number: Specify the port number for database listening. The default port number is 1521.
• Database name: Specify the name of the database to connect to.
• Username: Specify the username used to connect to the database.
• Password: Specify the password used to connect to the database.

Create a connection string:

To create a connection string, concatenate the above parts together, using a semicolon (;) as a separator . For example:

<code>jdbc:oracle:thin:username/password@hostname:port/databaseName</code>

Where:

• jdbc:oracle:thin specifies the JDBC driver type.
• username is the username to connect to the database.
• password is the password for the username.
• hostname is the hostname or IP address of the computer where the database is located.
• port is the port number that the database listens on.
• databaseName is the name of the database to connect to.

Connect to the database:

Once you have created the connection string, you can use it to connect to the database. There are several ways to connect to a database:

• JDBC API: Using the JDBC API, you can create a database connection through the DriverManager class.
• ODP.NET: This is a .NET API provided by Oracle that allows you to connect to an Oracle database.
• SQL*Plus: This is a command line tool provided by Oracle to connect to the database and execute SQL queries.

Tip:

• Make sure you have permission to connect to the database.
• If the connection cannot be established, please check whether the connection string is correct and the database is running.
• In a production environment, use a secure protocol (such as SSL) to encrypt the connection.

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