startSession¶

Definition定义¶

startSession¶

New in version 3.6.版本3.6中的新功能。

The startSession command starts a new logical session for a sequence of operations.

startSession has the following syntax:语法如下所示：

{ startSession: 1 }

To run startSession, use the db.runCommand( { <command> } ) method.

db.runCommand( { startSession: 1 } )

Important

featureCompatibilityVersion must be 3.6 or greater to use the startSession command.

See also参阅

Mongo.startSession()

Behavior行为¶

If the deployment enforces authentication/authorization, you must be authenticated to run the startSession command. The user who runs startSession owns the created session, and only that user can use the session.

If the deployment does not enforce authentication/authorization, a created session has no owner and can be used by any user on any connection. If the user authenticates and creates a session for a deployment that does not enforce authentication/authorization, the user owns the session. However, any user on any connection may use the session.

If the deployment transitions to auth without any downtime, any sessions without an owner cannot be used.

Output¶

In addition to the status and operation time of the command, the startSession returns the following session specific information:

id: { id: <UUID> }