The Oracle PL/SQL package is a software product that allows you to develop stored procedures, functions, and packages using the PL/SQL programming language. It is available for all major operating systems, including Windows, Linux, and Unix. The package includes a compiler, debugger, profiler, and other tools.PL/SQL is a procedural language extension to SQL. It has been developed by Oracle Corporation in the early 1990s. PL/SQL combines the data manipulation power of SQL with the procedural programming capabilities of procedural languages. It is one of the most popular languages used in developing stored procedures, functions, and packages for Oracle databases.