A connection string with database name and location is defined as an URL and it is used along with username and password to establish the connection. The program starts with a declaration of a class. Execution of query A statement object to hit the database and query the records need to be created using createStatement method.
Using this object records are fetched from the database and stored in result set rst. Cull out the data from the extracted result set and display them getint or getString method should be used to cull out the data from the result set obtained by executing the query.
Handling the exception If any error occurs it has to be managed and the exception should be displayed for the developers to handle it. Defining Driver class For connecting to the Oracle database we need to define the driver class in the program.
Import java. Connection String URL This consists of driver definition, server name, port number, Oracle service name which is available tsname. User names and passwords are also provided in the connection string. Testuser is the user name and tst 12 is the password. Jdbc — API name , Oracle — Databsae, xxxx is the driver name, localhost is the server name IP number can also be used instead of name , — Port number, Testuser is the user name and tst 12 is the password.
When the driver is loaded, you can establish a connection by using a connection URL and the getConnection method of the DriverManager class:. Therefore, applications do not need to call the Class. When the getConnection method of the DriverManager class is called, an appropriate driver is located from the set of registered JDBC drivers.
Driver" file, which contains the com. SQLServerDriver as a registered driver. The existing applications, which currently load the drivers by using the Class. For more information about how to connect with data sources and use a connection URL, see Building the connection URL and Setting the connection properties.
Overview of the JDBC driver. Skip to main content. Asked 3 years, 3 months ago. Active 3 years, 3 months ago. Viewed 22k times. I tried: spring. SQLServerDriver and spring. Improve this question. Tim Biegeleisen k 22 22 gold badges silver badges bronze badges.
Clyde Barrow Clyde Barrow 1, 2 2 gold badges 22 22 silver badges 47 47 bronze badges. What exception do you get? Keep connections active via lightweight activity. This method is not recommended and should only be used if there are no other possible options. To address the first point and avoid dropping idle connections by a network component, the following registry settings or their non-Windows equivalents should be set on the operating system where the driver is loaded:.
These settings will have the effect of disconnecting an unresponsive connection within 10 to 40 seconds. After a keep alive packet is sent, if no response is received, it will be retried every second up to 10 times. If no response is received during that time, the client-side socket is disconnected.
Depending on your environment, you may want to increase the KeepAliveInterval to accommodate known disruptions like virtual machine migrations that might cause a server to be unresponsive for longer than 10 seconds. To perform this configuration when running in Azure, create a startup task to add the registry keys. For example, add the following Startup task to the service definition file:.
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