1.

What are the different types of locks in mainframe?

Answer»

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.


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