Re: pg_dump --compress error

On 31 Aug 2010, at 8:17, yasin malli wrote:

Don't reply to just me, include the list.

> if I took my dump file with 'pg_dump -Ft ' command, I would use 'pg_restore', but I take my dump file at plain-old format for compressing data ( tar format dump hasn't compress feature )
> when I tried your suggestion, I take this error : pg_restore: [archiver] input file does not appear to be a valid archive

Ah right, most people use --compress in combination with the custom format (-Fc).

> I have little space on my device so I have to compress db files.
> For example; when I took dump_file with 'pg_dump -Ft' dump_files size : 56K
> 'pg_dump --compress=5' : 4K

Try pg_dump -Fc --compress=5, I think you'll reach comparable sizes and you'll get much more flexibility to restore your database.
Shouldn't you be using level 9 btw, if you're worried about disk space?

> I can take a dump_file but I can't restore it. Is there any other way to restore compressed data ?

Didn't you read the man page for the --compress option? You can just pipe your dump through gunzip.

Alban Hertroys

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