Transaction Manager

What is a Transaction Manager?

Definition and meaning of Transaction Manager

A Transaction supervisor is part of an application that controls the coordination of transactions over one or more sources. The transaction manager is answerable for creating transaction Objects and dealing with their sturdiness and Atomicity. Transaction managers hold tune of all of the useful resource managers that are enlisted in a transaction.

What Does Transaction Manager Mean?

When advised to devote a transaction, transaction managers kick off the 2-section Commit Protocol. In the first segment, they ask all enlisted resource managers to put together. In the second segment, the transaction managers notify the resource managers if the transaction is aborted or devoted.

A transaction manager maintains a log in garage. This log is mostly a sequential report, that's used to Record the transaction activities. Transaction managers use this log for recording transaction starts offevolved, dedicate selections, enlistments, etc. At the time of everyday processing, transaction managers simply write to the log, however if they Fail, they read the log as soon as it restarts to repair the Modern day nation.

Transaction managers regularly have the following obligations:

• Demarcation: Starting and completing transactions through begin, devote and Rollback strategies.
• ConTrolling the Transaction Context: Transaction contexts comprise all of the statistics that enables a transaction supervisor to display a transaction. Transaction managers are in rate of Constructing transaction contexts and connecting them to the present Thread.
• Coordinating the Transaction: Transaction managers commonly have the ability to harmonize a transaction over numerous assets. This Function needs the 2-phase devote protocol. XA protocol is likewise used to sign in and manipulate the resources.
• Recovery From Failure: Transaction managers are responsible to guarantee that the sources aren't stored in an inconsistent kingdom in case of a gadget or Software failure.

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