Here is the list of some simple pl/sql programs examples. These programs will help you to learn pl/sql programming.
1. Hello World Program in PL/SQL
2. PL/SQL Program To Add Two Numbers
3. PL/SQL Program for Prime Number
4. PL/SQL Program to Find Factorial of a Number
5. PL/SQL Program to Print Table of a Number
6. PL/SQL Program for Reverse of a Number
7. PL/SQL Program for Fibonacci Series
8. PL/SQL Program to Check Number is Odd or Even
9. PL/SQL Program to Reverse a String
10 .Pl/SQL Program for Palindrome Number
11. PL/SQL Program to Swap two Numbers
12. PL/SQL Program for Armstrong Number
If you need any program then contact me, I will try to add it here.