The utl_file.fopen function in Oracle is an essential tool for file handling on the server. It allows Oracle database code, such as PL/SQL procedures or functions, to open and access files stored in specific, predefined directories on the database server.…
If you are working with Oracle, you will often need to execute PL/SQL blocks to test logic, fetch data, or print results. Running a PL/SQL block is easy, and you can do it in different ways depending on which tool…
In PL/SQL, you can use the raise_application_error procedure to throw custom error messages when a specific condition is not met in your code. This is especially helpful when you want to enforce business rules or validation checks within your stored…
In Oracle, you can execute functions that accept parameters in several ways. Functions are commonly used to return a single value based on the input you provide. Below are two common approaches to executing an Oracle function with parameters. 1.…
In Oracle PL/SQL, a stored procedure can have different types of parameters: IN, OUT, and IN OUT. The IN parameter is used to pass a value into the procedure, while the OUT parameter allows the procedure to return a value…
To execute a procedure that is defined within a package in Oracle, you simply reference the procedure using the package name followed by the procedure name. This makes it easy to organize and call your procedures, especially when your application…
When working with Oracle PL/SQL, it is important to understand the correct way to define procedures within packages. In Oracle, every procedure or function that is part of a package must first be declared in the package specification before you…
A CSV file (Comma-Separated Values file) is a plain text file in which individual fields are separated by commas. This format is commonly used for exchanging data between systems because it is simple and widely supported. In this article, I…
Exporting data from an Oracle table directly into an Excel file can be accomplished easily using PL/SQL and the xlsx_builder_pkg package. This utility allows you to generate Excel .xlsx files directly from SQL queries run in your Oracle database. Below,…
PL/SQL table types—also known as collections—function similarly to arrays in other programming languages. Using PL/SQL collections, you can process large volumes of data efficiently and perform bulk operations with ease. In this article, I will introduce some of the most…
Sometimes, you may need to move a file from one directory to another within your Oracle database environment. Oracle provides a convenient way to accomplish this task using PL/SQL, but before you begin, you must ensure that directory objects exist…
Sometimes, you may encounter a situation where you have a very large text or CSV file that is cumbersome to open or process all at once. In such cases, it is often useful to split the large file into several…
When we want to know the current local time in any country, we often use Google to search for this information. However, in Oracle PL/SQL, you can retrieve the current local time for any country directly using built-in features. In…
