<atul.g...@globaldatapoint.com> writes:
> I by mistake ran a query to update a huge table with around 500000 rows and 
> has to kill the session.

> I found the process-id from the query select * from pg_stat_activity. I 
> killed the process using Kill -9 process_id.

> This caused all other sessions in the system to be killed and database was 
> unreachable for a minute or so.


> MY QUESTION: Is this normal?

Yes.  That is not the recommended way to cancel a query.

                        regards, tom lane

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