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Cancel Element (XMLA)

Cancels a currently running command an Microsoft SQL Server Analysis Services instance.


<Command>
   <Cancel>
      <ConnectionID>...</ConnectionID>
      <SessionID>...</SessionID>
      <SPID>...</SPID>
      <CancelAssociated>...</CancelAssociated>
   </Cancel>
</Command>

Characteristic

Description

Data type and length

None

Default value

None

Cardinality

0-n: Optional element that can occur more than once.

Relationship

Element

Parent elements

Command

Child elements

CancelAssociated, ConnectionID, SessionID, SPID

The Cancel command cancels currently executing commands within the context of a session. If the client application has not requested a session, a command cannot be canceled.

If the Cancel command is executed during the execution of a Batch command, the entire Batch command is canceled. If the Batch command was transactional, all of the commands contained by the Batch command are rolled back. If the Batch command was not transactional, only those commands contained by the Batch command that were executing at the time the Cancel command was executed are rolled back. Commands in a non-transactional Batch command that had already executed would not be rolled back.

Typically, the Cancel command is used to cancel executing commands on the currently active session. In that case, none of the child elements for the Cancel command must be specified. The Cancel command can also be used by administrators to cancel commands executing on connections or sessions other than the currently active session. Members of a role that has Administer permissions for a given database can cancel commands for connections and sessions applicable to that database, while server administrators can cancel commands for connections and sessions for a given Analysis Services instance.

To retrieve information about current connections and sessions for an Analysis Services instance, the Discover method can be executed to request, respectively, the DISCOVER_CONNECTIONS and DISCOVER_SESSIONS schema rowsets. Members of a role that has Administer permissions for a given database can return sessions only for a given database by specifying that database in the SESSION_CURRENT_DATABASE restriction column for the DISCOVER_SESSIONS schema rowset. For more information about the Discover method, see Discover Method (XMLA).

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