A socket is used to communicate between two programs. Socket forms one endpoint of a two-way communication link between the programs. We will also see how to read and write from the socket. Oracle is more than database. For that below is the command you need to execute as system or sysdba user. You can choose to give access to connect to only specific server and port.
Write a program to execute SQL function using CallableStatement.
How to send email with attachments from PL/SQL using Java Stored Procedures
There is lot of requirements where we need to use Java like zipping the files stored in database, deleting files from server. Requirement: To delete file from server, file name will be provided as input parameter. This example will use a simple Java program that will be compiled outside of Oracle and then loaded into the database. In this example, the Java class file was loaded into the database. The Java source file can also be loaded. But, both the source and class files cannot be loaded at the same time. If loading many Java class files at one time, it is advisable to put them in a JAR file and load them into the database at one time, since the loadjava program will also load JAR files.
The major difference between a procedure and a function is, a function must always return a value, but a procedure may or may not return a value. I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment. If you come across any mistakes or bugs, please email me to [email protected].
The Java classes and source files are stored as schema objects in the database as Java is a natively part of the Oracle database. JVM interprets the Java compilation and executes the run-time object code. These two processes to load Java class or source file are explained below,. We can either create a Java class object or a source file object which in-turn creates the appropriate classes by itself.