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Could not allocate space for object 'dbo.SORT temporary run storage:  142590947360768' 
in database 'tempdb' because the 'PRIMARY'.....

This error message happened 3 days ago. How can I track down what/where/when/how/who caused it? I am very new to this any advice or direction would be much appreciated. I tried 

SELECT * FROM tempdb.sys.allocation_units WHERE allocation_unit_id = '142590947360768';

But it's no showing anything.

Vel
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    I think you will need to allocate more space to PRIMARY in tempdb, or set it to autogrow. – alexherm Apr 29 '20 at 18:06
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    If that session / object has gone away since three days ago (likely), I don't think you're going to find anything about it, though the default trace may at least still have any growth events that led up to it, and it _may_ contain other information about objects created around the same time. See https://dba.stackexchange.com/q/48052/1186 – Aaron Bertrand Apr 29 '20 at 18:32
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    To capture better info about file growth events in the future, by setting up a proactive Extended Events session, see this series: [Part 1](https://sqlperformance.com/2020/03/extended-events/removing-default-trace-1) | [Part 2](https://sqlperformance.com/2020/04/extended-events/removing-default-trace-2) | [Part 3](https://sqlperformance.com/2020/04/extended-events/removing-default-trace-3) – Aaron Bertrand Apr 29 '20 at 18:34

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