Subject: Re: oracle_fdw issues
To: pgsql-admin@postgresql.org
References: <341df494-f543-d4fa-a6b7-e1288b56d66b@propaas.com>
From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
Message-ID: <18e8c399-7782-e6f8-4c93-0a5d1d8d8e71@catalyst.net.nz>
Date: Wed, 2 Aug 2017 15:17:44 +1200
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Hi,

The ORA 12154 makes me suspect that VLCDB is being considered as a TNS 
alais -  and was not found in any tnsnames.ora that your client env 
variables pointed to. So you might need to:

- make a tnsnames.ora if not done so already

- set TNS_ADMIN to point the the dir it is in

Alternatively I think  you can use the JDBC style connect descriptor e.g 
://hostname/SID in your CREATE SERVER command.

regards

Mark


On 02/08/17 13:58, PropAAS DBA wrote:
>
> Hi All;
>
>
> I'm trying to setup oracle_fdw and I think I'm mostly there but I have 
> an issue.  Here's what I've done.
>
>
> - both PostgreSQL 9.6 and Oracle v10 running on the same server
>
> As the postgres user I can connect to the Oracle instance like so:
>
> 1) export ORACLE_HOME
>
> 2) export ORACLE_SID
>
> Note: the oracle sid = VLCDB
>
> 3) run sqlplus and when prompted enter system for the user and then 
> the passwd
>
>
> So based on the fact I can connect, I did this:
>
>
> 1) downloaded, compiled and installed oracle_fdw
>
> 2) connected to psql and ran this:
>
> - CREATE EXTENSION oracle_fdw;
>
> - CREATE SERVER oradb1  FOREIGN DATA WRAPPER oracle_fdw
>           OPTIONS (dbserver 'VLCDB');
>
> -GRANT USAGE ON FOREIGN SERVER oradb1 TO postgres;
>
> - CREATE USER MAPPING FOR postgres SERVER oradb1
>           OPTIONS (user 'system', password 'orapwd');
>
>
>
> All of the above commands completed successfully, then I created a 
> foreign table which also succeeded:
>
> CREATE FOREIGN TABLE oratab1 (pid int, cname varchar(30), cstatus 
> varchar(30), c_ts timestamp with time zone)
>
> SERVER oradb1 options (schema 'CLD', table 'cust_ord_process_status');
>
>
> Now if I run:
>
> IMPORT FOREIGN SCHEMA CLD FROM SERVER oradb1 INTO local_cld_sch;
>
> it hangs for a long time and eventually returns this error
>
> *
> **ERROR:  cannot connect to foreign Oracle server**
> **DETAIL:  ORA-12154:  TNS:could not resolve the connect identifier 
> specified*
>
>
>
> Also If I run this (based on the foreign table above)
>
> select * from oratab1 limit 10;
>
>
> it also hangs for a long time, then I get this error
>
> *
> **ERROR:  cannot connect**ion for foreign table "oratab1" cannot be 
> established
> **DETAIL:  ORA-12154:  TNS:could not resolve the connect identifier 
> specified*
>
> *
> *
>
>
> Thoughts?
>
> Thanks in advance
>
>
>
>


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