On Wed, May 20, 2020 at 1:45 PM shawn wang <shawn.wang.pg@gmail.com> wrote:
>
> Tom Lane <tgl@sss.pgh.pa.us> 于2020年5月20日周三 上午12:09写道：
>>
>>
>> I remain however of the opinion that doing this sort of thing in
>> single-user mode, or really much of anything beyond emergency
>> vacuuming, is unwise.
>
>
> I do agree with you, but there is no clear point in the document (maybe I did not read it all),
> it is recommended to make it clear in the document.
>
It seems to be indicated in the docs [1] (see the paragraph starting
with "The postgres command can also be called in single-user mode
...") that it is used for debugging or disaster recovery.
[1] - https://www.postgresql.org/docs/devel/app-postgres.html
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com