Deadlock Deadlock is a situation when two transactions arewaiting for each other to release a lock The transaction involved in deadlock keep onwaiting unless deadlock is over

Deadlock is a specific situation in computer systems (particularly in multitasking systems) where two or more tasks are unable to proceed because each is waiting for the other to release a resource.

Here's a step-by-step explanation:

1. A deadlock situation arises when two or more processes need some resource to complete their execution that the other processes are holding.

2. Let's consider a scenario where we have two processes, P1 and P2, and two resources, R1 and R2. Suppose P1 is holding R1 and waiting for R2, which is held by P2. At the same time, P2 is waiting for R1, which is held by P1. This situation is a deadlock.

3. In this situation, neither of the processes can proceed with their execution because they are waiting for the other to release the resource they need.

4. The processes involved in a deadlock will continue to wait indefinitely unless some action is taken to resolve the deadlock. This could involve aborting one or more processes, or forcibly taking a resource away from a process and giving it to another.

5. Deadlocks are a problem because they result in resource starvation. The resources being held by the deadlocked processes are effectively wasted, as they could be used by other processes.

6. To prevent deadlocks, systems can use various techniques such as deadlock avoidance, deadlock prevention, or deadlock detection and recovery. These techniques involve careful resource scheduling and process management to ensure that deadlocks do not occur.