Oracle thin jdbc driver download

DriverManager class. This class provides a basic service for managing a set of JDBC drivers. The registerDriver method takes as input a "driver" class, that is, a class that implements the java.

Driver interface, as is the case with OracleDriver. Note: Alternatively, you can use the forName method of the java. Class class to load the JDBC drivers directly.

For example: Class. OracleDriver" ;. However, this method is valid only for JDK-compliant Java virtual machines. It is not valid for Microsoft Java virtual machines. Once you have registered the driver, you can open a connection to the database with the static getConnection method of the java. This following topics are covered in this chapter:. It is lightweight and easy to install.

Also, this driver does not require any additional Oracle software on the client-side. It can be used for application servers as well as for applets. Both of these protocols are lightweight implementation versions of their counterparts on the server.

On the client-side, drivers can be used in Java applications or Java applets that run either on the client or in the middle tier of a three-tier configuration. On the server-side, this driver is used to access a remote Oracle Database instance or another session on the same database. This driver can be downloaded along with the Java applet that is being run in a browser. The HTTP protocol, which is usually used for communication over a network, is stateless.

After the JDBC Thin driver establishes the database connection, the communication between the browser and the database is stateful and in a two-tier configuration. This section describes what you must do to connect an applet to a database. This description includes how to use the Connection Manager feature of Oracle Database, or signed applets if you are connecting to a database that is running on a different host from the Web server.

It also describes how your applet can connect to a database through a firewall. The section concludes with how to package and deploy the applet. The most common task of an applet using the JDBC driver is to connect to and query a database. This is the host on which the Web server is running. This means that without these steps, your applet can connect only to a database that is running on the same host as the Web server.

If your database and Web server are running on the same host, then there is no issue and no special steps are required. You can connect to the database as you would from an application. As with connecting from an application, there are two ways in which you can specify the connection information to the driver.

You can provide it in the form of host:port:sid or in the form of TNS keyword-value syntax. For example, if the database to which you want to connect resides on host prodHost , at port , and system identifier SID ORCL , and you want to connect with user name scott and password tiger , then use either of the two following connection strings:.

However, a Web server and database server both require many resources. You seldom find both servers running on the same computer. Usually, your applet connects to a database on a host other than the one on which the Web server runs. If you want your applet to connect to a database running on a different computer, then you have the following options:. Use the Oracle Connection Manager on the host computer.

The applet can connect to the Connection Manager, which connects to a database on another computer. Use signed applets, which can request socket connection privileges to other computers. Your applet can also take advantage of the data encryption and integrity checksum features of the Advanced Security option of Oracle Database.

If you are connecting to a database on a host other than the one on which the Web server is running, then you must overcome applet security restrictions.

You can do this in the following ways:. The Oracle Connection Manager is a lightweight, highly scalable program that can receive Oracle Net packets and retransmit them to a different server.

To a client running Oracle Net, the Connection Manager looks exactly like a database server. Figure illustrates the relationship between the applet, the Oracle Connection Manager, and the database. You must install the Connection Manager, available on the Oracle distribution media, onto the Web server host. The options you can declare in a CMAN. ORA file include firewall and connection pooling support.

Here is an example of a very simple CMAN. The default tablespace is users and the allocated space is unlimited. In real life, a database administrator creates custom roles and fine tunes privileges for each role. For more information about roles and privileges, see Oracle Database Security Guide. A tablespace is a logical database storage unit of any Oracle database.

In fact, all of the database's data is stored in tablespaces. You create tables within allocated tablespaces. If a default tablespace is not explicitly assigned to a user, the system tablespace is used by default it is better to avoid this situation.

In this exercise you will recreate a table by using the structure of another table. In this example, you want the user jim to create a copy of the Departments table in his schema by recreating the table from the hr database.

Before you create the table you will need to disconnect from the server and log in as user jim. When you created the user jim , the Select privilege was limited to the Departments table.

If you want to copy the data from the original Departments table to the new table, you can enter the data manually in the table editor or run an SQL script on the new table to populate the table. The following script will populate the first row of the new table with the data from the original table.

You can retrieve the SQL script for populating the table from the original table by performing the following steps. By running SQL queries, you can add, modify and delete data maintained in database structures. At first, create the second table named Locations in the jim schema stay logged under the jim's user account. If more than one database connection is registered with the IDE, the IDE might prompt you to select the correct connection.

Note that you cannot insert new records directly in the results of this query, as you could do in the representation of a single table. For this, the database user should be granted the privilege to Create View that our sample user does not have. You can log in under the system account, grant jim the Create View privilege with this SQL statement: 'grant create view to jim;' and try creating your own view.

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