[postgis-users] Max size of rasters?

Nicolas Ribot nicolas.ribot at gmail.com
Thu Sep 5 01:46:55 PDT 2019


Hello,

>
>
> We are trying to create somewhat large rasters (30-40 bands of data
> comprising a few GB of data uncompressed). At some point the import into
> PostGIS is failing. Supposedly there is a 1GB field size limit in Postgres.
> Is it really so that you cannot have raster fields larger than 1GB? Seems
> like a pretty big limitation.
>
>
>
> Warm regards,
>
>
>

Hi, Postgis raster (AFAIU), is meant to store rasters in small tiles, one
tile per row, and not as a big object in one row.
What is the tile size you chose during the import ?

Postgis will be much more efficient when dealing with a raster table with a
lot of small rows vs few big rows.

Nicolas
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