[postgis-users] ArcGIS desktop accessing and reading from PostGIS

Wed Aug 21 10:13:35 PDT 2019

What Paul said . . . .  :c)

bobb

On Aug 21, 2019, at 11:59 AM, Paul Ramsey <pramsey at cleverelephant.ca<mailto:pramsey at cleverelephant.ca>> wrote:

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This is not actually so. There’s nothing special about the postgres database, drop it and see. The system information lives in system catalogs that are not attached to any particular database. The template0 and template1 databases are “special” in that new databases are created by copying the contents of those templates, so alterations to them will percolate into any new databases created, so they should generally be left alone (unless you have a reason to want something included in all new databases). If you drop template1 you will find it hard to create new databases (unless you specify a different template) but otherwise things will keep running.

Anyways, I imagine the mystery of the Esri connection to ‘postgres’ is just that someone at Esri thought the same as you, seeing that most builds of postgres do ship with a postgres database already created, so that the postgres database user can easily have something to connect to that is not one of the templates. But it’s not special, it’s just a database.

P.

On Aug 21, 2019, at 9:33 AM, Andy Anderson <aanderson at amherst.edu<mailto:aanderson at amherst.edu>> wrote:

The postgres database is set up by default by the postgres server and holds configuration information: databases, users, etc. Don’t touch. Set up another database for Arc to use.

— Andy

On Aug 21, 2019, at 12:23 PM, Basques, Bob (CI-StPaul) <bob.basques at ci.stpaul.mn.us<mailto:bob.basques at ci.stpaul.mn.us>> wrote:

That’s what I’m talking about.  when I first tried to connect to Posters (and the “postgres” named database, I kept getting an error from ArcGIS saying the the “postgres” name for a database was a bad thing, and it wouldn’t connect.  After much searching, I discover that the name, “postgres” for a database wasn’t allowed by the ArcGIS client to connect to.

As long as you don’t try connecting to the default “postgres” database, all seem to work fine.

bobb

On Aug 21, 2019, at 10:59 AM, Shaozhong SHI <shishaozhong at gmail.com<mailto:shishaozhong at gmail.com>> wrote:

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Hi, Bobb,

I am confused with this.

The idea is to use ArcGIS desktops to read data from PostGIS/PostgreSQL.

How best to configure and make them happy to talk to each other?

Regards,

Shao

On Wed, 21 Aug 2019 at 15:01, Basques, Bob (CI-StPaul) <bob.basques at ci.stpaul.mn.us<mailto:bob.basques at ci.stpaul.mn.us>> wrote:
Shao,

I had to dig fairly deeply into the ESRI site to find this particular explanation for why the service couldn’t/wouldn’t get connected.  Just to be clear, we do use logins for accessing the database, we just have chosen to use the “postgres” (named) database.

So, I just went and tried to find the refence I found previously, and can’t find it (real quick).  Anyway,as long as you don’t try to connect to the “postgres” database, things do seem to work ok.

bobb

On Aug 21, 2019, at 2:18 AM, Shaozhong SHI <shishaozhong at gmail.com<mailto:shishaozhong at gmail.com>> wrote:

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Hi, Bob,
Can you point me to excellent technical documentation on what you mentioned, so that I can double-check.
My colleagues have made it working, but there are some issues.  For instance, not all ArcGIS desktops can access and retrieve data.

Looking forward to have more insight into this matter.

Regards,

Shao

On Tue, 20 Aug 2019 at 17:08, Basques, Bob (CI-StPaul) <bob.basques at ci.stpaul.mn.us<mailto:bob.basques at ci.stpaul.mn.us>> wrote:
All,

One biggie, is that the ESRI side does not like connecting to the “postgres” named database, claiming it’s a System database (whatever that means).  This is not readily available as a limitation either when looking for reasons why it won’t connect.  We’ve been using the “postgres” database name for years (a decade now??) with no ill effects from other applications/ connections.  I sort of understand this from the commercial side having worked with other databases like Oracle and MSSQL, but still, there should be a way to side step this with a setting somewhere.

I looked high and low for a way to alias the “postgres” database name inside of Postgres, but didn’t find anything very easy to implement or maintain very easily.  I did think about setting up another dataabase and using Views to the postgres database, but that seemed like a bad idea for some reason, along with being somewhat hard to maintain, but upon reflection I keep coming back to the idea.

All non “postgres” named connections seem to work fine so far.  Haven’t implemented anything yet that is really heavy duty as far as loading though, so who knows.

Anyway, just my 2cents.

bobb

On Aug 20, 2019, at 10:12 AM, Shaozhong SHI <shishaozhong at gmail.com<mailto:shishaozhong at gmail.com>> wrote:

Think Before You Click: This email originated outside our organization.

How to ensure that all versions of ArcGIS desktop applications can access and read from server-based PostGIS/PostgreSQL?

Regards,

Shao
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