Re: psql seems to hang during delete query

You can't delete from a full disk :)

No, really: database systems need space for logging, WAL, whatever.

And even with "delete" PostgreSQL will free no single byte, as deleting is
done with marking the row as deleted. Read up on multi version concurrency
why this has to be that way.

To reclaim space: vacuum freeze

So, to get space, you have to have space first. Delete something else.

Harald

On 7/20/06, surabhi.ahuja <surabhi(dot)ahuja(at)iiitb(dot)ac(dot)in> wrote:
>
> i am using postgresql 8.0.0
>
> my disk is 100% full
>
> i have a database called x
>
> i do the following
> psql x
> delete from table;
>
>
> nothing happens
>
> i try to see the top output
>
> i see the following
> 1768 sdc 25 0 41860 32m 30m R 99.7 0.8 11:29.35 postmaster
> i also saw this appearing
>
> 2525 root 16 0 7296 720 620 S 0.3 0.0 0:07.62hald-addon-stor
>
> its been almost half an hour
> and the database is still in the same state. (all the rows still exist)
>
> what is happening?
> hasnt it started deleteing yet?
> postgreslog dont say anything.
>
> what can be done in such a case?
> thanks,
> regards
> Surabhi
>

--
GHUM Harald Massa
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Harald Armin Massa
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