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MongoDB - Start transaction

MongoDB - Start transaction

Starts a transaction session on a MongoDB connection. It lets you group several operations (insert, update, delete) into one atomic unit — every operation is applied together with MongoDB: Commit transaction or undone with MongoDB: Abort transaction.


Options​

Select a connection​

Reference to the MongoDB: Connection action the transaction will be started on.

Returns​

Javascript code​

js
actions["action-id"].session // session of the started transaction (Any)

Field selection​

  • session — transaction session, used as a reference by the operation actions that take part in the transaction (Any)

Rules and Conditions​

  • The Select a connection field is required.
  • The returned session must be passed in the Select a transaction field of the operation actions (findMany, insertOne, updateMany, etc.) for them to take part in the transaction.
  • The transaction must be finished with MongoDB: Commit transaction to apply the operations, or with MongoDB: Abort transaction to undo them.
  • MongoDB requires the collections used in a transaction to exist before the transaction starts.