SET SESSION RUNTIMECAP

Sets the maximum amount of time queries can run in a give session. If a query exceeds its session's RUNTIMECAP setting, Vertica terminates the query and returns an error. You cannot increase the RUNTIMECAP beyond the limit that is set in your user profile.

Vertica does not strictly enforce session RUNTIMECAP settings. If you time a query, you might discover that it runs longer than the RUNTIMECAP setting.

Syntax

SET SESSION RUNTIMECAP duration

Parameters

duration

Specifies how long a given query can run in the current session, one of the following:

  • NONE (default): Removes a runtime limit for all current session queries.
  • 'interval': Specifies as an interval the maximum runtime for current session queries, up to one year—for example, 1 minute or 100 seconds.
  • =DEFAULT: Sets maximum runtime for queries in this session to the user's RUNTIMECAP value.

Privileges

  • Superusers can increase session RUNTIMECAP to any value.
  • Non-superusers can only set the session RUNTIMECAP to a value equal to or lower than their own user RUNTIMECAP.

Examples

Set the maximum query runtime for the current session to 10 minutes: 

=> SET SESSION RUNTIMECAP '10 minutes';

Revert the session RUNTIMECAP to your user default setting:

=> SET SESSION RUNTIMECAP =DEFAULT;
SET
=> SHOW RUNTIMECAP;
    name    |  setting
------------+-----------
 runtimecap | UNLIMITED
(1 row)

See Also