What are the different types of locks in mainframe?
There are total three types of locks in mainframe:
- Update: It is known as permissive lock. It helps the program to read and make changes
- Shared: With the help of this lock, locked space reads two or more programs. It doesn’t allow the changes to take place
- Exclusive: It doesn’t let the locked space accessed.
BY Best Interview Question ON 13 Jan 2019