What is deadlock

1. What do you mean by deadlock?
2. What is deadlock and its types?
3. What is deadlock how it occurs?
4. What is deadlock DBMS?
5. What is deadlock in C#?
6. What is deadlock and its prevention?
7. What is deadlock in mainframe?
8. What is deadlock wait-for-graph?
9. What is Rdbms?
10. What is deadlock in SQL Server?
11. What is thread safe in C#?
12. How does Cobol handle deadlock?
13. What is deadlock timeout?

What do you mean by deadlock?

A deadlock is a situation in which two computer programs sharing the same resource are effectively preventing each other from accessing the resource, resulting in both programs ceasing to function.

What is deadlock and its types?

Deadlock is a situation where a set of processes are blocked because each process is holding a resource and waiting for another resource acquired by some other process. ... A similar situation occurs in operating systems when there are two or more processes that hold some resources and wait for resources held by other(s).

What is deadlock how it occurs?

A deadlock occurs when 2 processes are competing for exclusive access to a resource but is unable to obtain exclusive access to it because the other process is preventing it. This results in a standoff where neither process can proceed. The only way out of a deadlock is for one of the processes to be terminated.

What is deadlock DBMS?

In a database, a deadlock is a situation in which two or more transactions are waiting for one another to give up locks. All activity comes to a halt and remains at a standstill forever unless the DBMS detects the deadlock and aborts one of the transactions. ...

What is deadlock in C#?

Deadlock occurs when a resource is locked by a thread and is required by another thread at the same time. This problem occur frequenty in a multiprocessing system. It can occur when two or more threads wait for a resource that belon to another thread.

What is deadlock and its prevention?

In computer science, deadlock prevention algorithms are used in concurrent programming when multiple processes must acquire more than one shared resource. ... A deadlock prevention algorithm organizes resource usage by each process to ensure that at least one process is always able to get all the resources it needs.

What is deadlock in mainframe?

A deadlock is created when two applications lock data that is needed by the other, resulting in a situation in which neither application can continue executing. At time T1, Application A locks the first row in Table 1. ... At the same time, Application B locks the second row in Table 2.

What is deadlock wait-for-graph?

Wait-for-graph is one of the methods for detecting the deadlock situation. This method is suitable for smaller databases. In this method, a graph is drawn based on the transaction and their lock on the resource. If the graph created has a closed-loop or a cycle, then there is a deadlock.

What is Rdbms?

The software used to store, manage, query, and retrieve data stored in a relational database is called a relational database management system (RDBMS). The RDBMS provides an interface between users and applications and the database, as well as administrative functions for managing data storage, access, and performance.

What is deadlock in SQL Server?

A SQL Server deadlock is a special concurrency problem in which two transactions block the progress of each other. The first transaction has a lock on some database object that the other transaction wants to access, and vice versa.

What is thread safe in C#?

So, Thread safety is a technique which manipulates shared data structure in a manner that guarantees the safe execution of a piece of code by the multiple threads at the same time. A code is called thread safe if it is being called from multiple threads concurrently without the breaking of functionalities.

How does Cobol handle deadlock?

Instead of UPDATE statement, prefer SELECT FOR.... UPDATE OF for proper data locking in application where single row updates are processed. Improve the access time - Get only the data you need. avoid calculations & stuff regarding in it in a query, which you can do in application program itself.

What is deadlock timeout?

The timeout period refers to the length of time a transaction waits to acquire a lock before it gives up. A deadlock occurs when two or more transactions are waiting for each other in a cyclic fashion. The lock is granted. ... The end of a timeout period occurs.