Solution:
The process of transaction can guarantee the reliability of business applications. Locking resources is widely used in distributed transaction management (e.g; two phase commit, 2PC) to keep the system consistent. The locking mechanism, however, potentially results in various deadlocks. In service oriented architecture, the deadlock problem becomes even worse because multiple transactions try to lock shared resources in the unexpectable way due to the more randomicity of transaction requests, which has not been solved by existing research results. In this paper, we investigate how to prevent local deadlocks, caused by the resource competition among multiple sub-transactions of a gl obal transaction, and global deadlocks from the competition among different global transactions. We propose a replication based approach to avoid the local deadlocks, and a timestamp based approach to significantly mitigate the global deadlocks. A general algorithm is designed for both local and global deadlock prevention. The experimental results demonstrate the effectiveness and efficiency of our deadlock prevention approach. Further, it is also proved that our approach provides higher system performance than traditional resource allocation schemes.
This is the required answer.
That answer would be B hope it helps
Answer:
Hot-add
Explanation:
The computer system is a electronic device that is used to perform computational task on input data for a pre-dertermined result. The components of the computer is divided into hardware and software components.
The hardware components are the physical parts of the computer system, while the software component are the instructions that runs the system.
The RAM is a physical component that provides memory for running current activities on the monitor screen. When it is removed or faulty, the screen goes blank. To add more RAM memory to the system while the system is on, activate the hot-add memory settings.
