Thread: Re: Connection between PostgreSQL and SAP HANA database
On 10/10/24 02:54, Thürmann, Andreas wrote: > Please excuse the late reply. I didn't have time to continue working on > this project. > > I still don't get a response to the query. The query continues > indefinitely and the data output window shows only „Waiting for the > query to complete...“ > > In the SAP HANA logs i can’t find any access of my PostgreSQL-query, the > Microsoft solution works perfectly and is visible in the log. Are you running this on Windows? > > Is it not possible to connect to the SAP HANA database with PostgreSQL > or are there errors in my setup? > > My current expectation of the data stream: PostgreSQL -> odbc_fdw -> > HDBODBC (SAP-driver) –> SAP HANA database Does this: HDBODBC (SAP-driver) –> SAP HANA database work? Meaning, does test connection complete successfully. What are the settings for odbc_fdw and the SAP driver? > > But how can I set up the connection between the two ODBC drivers? > > Has anyone already implemented a project like this and can tell me how > to establish the connection to SAP? > > > Adrian Klaver (adrian.klaver@aklaver.com > <mailto:adrian.klaver@aklaver.com> > > > <mailto:adrian.klaver@aklaver.com > <mailto:adrian.klaver@aklaver.com>>) asked: > > > > > > Postgres version? > > > > > > PostgreSQL 16 with pgAdmin 16 4.2.2 > > Have you tried tried this using psql? > > > Have you looked at Postgres log for errors? > > > > > > No errors during the query in the log, only a > > > „unrecognized winsock error 10054“ at the start of the pg client > > Have you looked at the SAP HANA logs to see if a connection is even > attempted? > > Ron Johnson (ronljohnsonjr@gmail.com <mailto:ronljohnsonjr@gmail.com>) > asked me the following. Answers below: > > 1. What error did you get? > > No error, the query runns into infinity (>30 min.) without a result. > > 2. Which command caused the error? > > Test-query like SELECT * FROM hana_table LIMIT 10; > > 3. What version of the odbc_fdw are you using? > > Latest, Version 0.5.2 > > 4. What version of Postgresql are you using? > > PostgreSQL 16 with pgAdmin 16 4.2.2 > > Adrian Klaver (adrian.klaver@aklaver.com > <mailto:adrian.klaver@aklaver.com>) asked: > > Postgres version? > > PostgreSQL 16 with pgAdmin 16 4.2.2 > > SAP HANA version? > > SAP HANA database 2.00.07400 > > odbc_fdw version and where did you get it from? > > I use the odbc_fdw from > https://www.postgresonline.com/journal/index.php?/archives/409-PostgreSQL-16-64-bit-for-Windows-FDWs.html <https://www.postgresonline.com/journal/index.php?/archives/409-PostgreSQL-16-64-bit-for-Windows-FDWs.html> > > How do you know you are not making a connection? > > No results from the query, no suggestions in the > foreign table creation menu > > Have you looked at Postgres log for errors? > > No errors during the query in the log, only a > „unrecognized winsock error 10054“ at the start of the pg client > > Hello everyone, > > I'm currently trying to establish a connection between PostgreSQL and a > SAP HANA database. Unfortunately, so far without success. > > SAP's own ODBC driver works correctly and I can query the HANA database > using an ISQL command. However, I can't establish a connection from > PostgreSQL. > > I used the following commands to establish the connection: > > CREATE SERVER hana_server > > FOREIGN DATA WRAPPER odbc_fdw > > OPTIONS (dsn 'SAP_ODBC_DNS'); > > CREATE FOREIGN TABLE hana_table ( > > matnr VARCHAR(40) > > ) > > SERVER hana_server > > OPTIONS (table 'SAPABAP1.MARA'); > > CREATE USER MAPPING FOR postgres > > SERVER hana_server > > OPTIONS (odbc_user 'secret_user', odbc_password 'secret_password'); > > Can anyone tell me where the error is? > > Mit freundlichen Grüßen > > i. A. Andreas Thürmann > > > Mit freundlichen Grüßen > > i. A. Andreas Thürmann > Teamleitung IT-Applikationen & BI > IT-Applikationen & BI > > Schönmackers Umweltdienste GmbH & Co. KG > Hooghe Weg 1 > 47906 Kempen Tel: > Fax: > E-Mail: > +49 (2152) 207 6765 > > andreas.thuermann@schoenmackers.de > <mailto:andreas.thuermann@schoenmackers.de> > > ------------------------------------------------------------------------ > ** > Unsere aktuellen Datenschutzhinweise gemäß Artikel 13 DSGVO finden Sie > hier: Kunden > <https://www.schoenmackers.de/wp-content/uploads/2018/05/Datenschutzerklaerung-DSGVO_Kundeninfo.pdf> / Bewerber <https://jobs.schoenmackers.de/content/Datenschutzerklaerung/?locale=de_DE>. > > > Schönmackers Umweltdienste GmbH & Co. KG, Hooghe Weg 1, 47906 Kempen, > Sitz: Kempen, Amtsgericht Krefeld, HRA 3763, > p.h.G.: Schönmackers Umweltdienste Verwaltung GmbH, Sitz: Kempen, > Amtsgericht Krefeld, HRB 6153, > Geschäftsführer: Sabrina Michelbrink, Oliver Zimmermann > www.schoenmackers.de <http://www.schoenmackers.de/> > > <https://www.schoenmackers.de/containershop/> > > -- Adrian Klaver adrian.klaver@aklaver.com
Yes I run it under Windows, I also have a Linux server for testing. Under Windows I know that the driver works because i use it already in another project (MS SQL Server with LinkedServer). In Linux I can test the HDBODBC driver via command line and the ISQL command, this works fine. I'm desperate about the PostgreSQL configuration. I have no idea how to configure it. I doubt the path (HDBODBC (SAP-driver)–> SAP HANA database) myself, but i cant connect to the HDBODBC driver directly via an extension. My previous assumption was that i need a extension for the foreign data wrapper, the foreign server, foreign table and soon... How can I use the system dsn in PostgreSQL? -----Ursprüngliche Nachricht----- Mit freundlichen Grüßen i. A. Andreas Thuermann Teamleitung IT-Applikationen & BI IT-Applikationen & BI Schoenmackers Umweltdienste GmbH & Co. KG Hooghe Weg 1 47906 Kempen Tel: +49 (2152) 207 6765 Fax: E-Mail: andreas.thuermann@schoenmackers.de Schönmackers Umweltdienste GmbH & Co KG, Hooghe Weg 1, 47906 Kempen, Sitz: Kempen, Amtsgericht Krefeld, HRA 3763, p.h.G.: Schönmackers Umweltdienste Verwaltung GmbH, Sitz: Kempen, Amtsgericht Krefeld, HRB 6153, Geschäftsführer: Sabrina Michelbrink, Oliver Zimmermann https://www.schoenmackers.de Hier geht es direkt zum Shop: https://www.schoenmackers.de/containershop Von: Adrian Klaver <adrian.klaver@aklaver.com> Gesendet: Donnerstag, 10. Oktober 2024 17:46 An: Thürmann, Andreas <Andreas.Thuermann@schoenmackers.de>; 'pgsql-general@lists.postgresql.org' <pgsql-general@lists.postgresql.org> Betreff: Re: Connection between PostgreSQL and SAP HANA database On 10/10/24 02:54, Thürmann, Andreas wrote: > Please excuse the late reply. I didn't have time to continue working > on this project. > > I still don't get a response to the query. The query continues > indefinitely and the data output window shows only „Waiting for the > query to complete...“ > > In the SAP HANA logs i can’t find any access of my PostgreSQL-query, > the Microsoft solution works perfectly and is visible in the log. Are you running this on Windows? > > Is it not possible to connect to the SAP HANA database with PostgreSQL > or are there errors in my setup? > > My current expectation of the data stream: PostgreSQL -> odbc_fdw -> > HDBODBC (SAP-driver) –> SAP HANA database Does this: HDBODBC (SAP-driver) –> SAP HANA database work? Meaning, does test connection complete successfully. What are the settings for odbc_fdw and the SAP driver? > > But how can I set up the connection between the two ODBC drivers? > > Has anyone already implemented a project like this and can tell me how > to establish the connection to SAP? > > > Adrian Klaver (adrian.klaver@aklaver.com > <mailto:adrian.klaver@aklaver.com> > > > <mailto:adrian.klaver@aklaver.com > <mailto:adrian.klaver@aklaver.com>>) asked: > > > > > > Postgres version? > > > > > > PostgreSQL 16 with pgAdmin 16 4.2.2 > > Have you tried tried this using psql? > > > Have you looked at Postgres log for errors? > > > > > > No errors during the query in the log, only a > > > „unrecognized winsock error 10054“ at the start of the pg client > > Have you looked at the SAP HANA logs to see if a connection is even > attempted? > > Ron Johnson (ronljohnsonjr@gmail.com <mailto:ronljohnsonjr@gmail.com>) > asked me the following. Answers below: > > 1. What error did you get? > > No error, the query runns into infinity (>30 min.) without a result. > > 2. Which command caused the error? > > Test-query like SELECT * FROM hana_table LIMIT 10; > > 3. What version of the odbc_fdw are you using? > > Latest, Version 0.5.2 > > 4. What version of Postgresql are you using? > > PostgreSQL 16 with pgAdmin 16 4.2.2 > > Adrian Klaver (adrian.klaver@aklaver.com > <mailto:adrian.klaver@aklaver.com>) asked: > > Postgres version? > > PostgreSQL 16 with pgAdmin 16 4.2.2 > > SAP HANA version? > > SAP HANA database 2.00.07400 > > odbc_fdw version and where did you get it from? > > I use the odbc_fdw from > https://www.postgresonline.com/journal/index.php?/archives/409-Postgre > SQL-16-64-bit-for-Windows-FDWs.html > <https://www.postgresonline.com/journal/index.php?/archives/409-Postgr > eSQL-16-64-bit-for-Windows-FDWs.html> > > How do you know you are not making a connection? > > No results from the query, no suggestions in the > foreign table creation menu > > Have you looked at Postgres log for errors? > > No errors during the query in the log, only a > „unrecognized winsock error 10054“ at the start of the pg client > > Hello everyone, > > I'm currently trying to establish a connection between PostgreSQL and > a SAP HANA database. Unfortunately, so far without success. > > SAP's own ODBC driver works correctly and I can query the HANA > database using an ISQL command. However, I can't establish a > connection from PostgreSQL. > > I used the following commands to establish the connection: > > CREATE SERVER hana_server > > FOREIGN DATA WRAPPER odbc_fdw > > OPTIONS (dsn 'SAP_ODBC_DNS'); > > CREATE FOREIGN TABLE hana_table ( > > matnr VARCHAR(40) > > ) > > SERVER hana_server > > OPTIONS (table 'SAPABAP1.MARA'); > > CREATE USER MAPPING FOR postgres > > SERVER hana_server > > OPTIONS (odbc_user 'secret_user', odbc_password 'secret_password'); > > Can anyone tell me where the error is? > > Mit freundlichen Grüßen > > i. A. Andreas Thürmann
On 10/11/24 01:23, Thürmann, Andreas wrote: Please do not post. The convention on this list is to inline or bottom post. That makes it easier to follow the conversation flow. See: https://en.wikipedia.org/wiki/Posting_style > Yes I run it under Windows, I also have a Linux server for testing. > Under Windows I know that the driver works because i use it already in another project (MS SQL Server with LinkedServer). > In Linux I can test the HDBODBC driver via command line and the ISQL command, this works fine. Works fine as in you can connect to the SAP HANA database with the HDBODBC driver? > > I'm desperate about the PostgreSQL configuration. I have no idea how to configure it. I doubt the path (HDBODBC (SAP-driver)–> SAP HANA database) myself, but i cant connect to the HDBODBC driver directly via an extension. What are the settings/commands you are using for the various parts of this connection chain: 1) HDBODBC driver. 2) ISQL command. 3) odbc_fdw. 4) Foreign server creation statements. > My previous assumption was that i need a extension for the foreign data wrapper, the foreign server, foreign table andso on... Yeah that is shown here: https://github.com/CartoDB/odbc_fdw In the Example section. > > How can I use the system dsn in PostgreSQL? > > -- Adrian Klaver adrian.klaver@aklaver.com
On 10/11/24 09:16, Adrian Klaver wrote: > On 10/11/24 01:23, Thürmann, Andreas wrote: > > Please do not post. The convention on this list is to inline or bottom That should have been do not top post. > post. That makes it easier to follow the conversation flow. > > See: -- Adrian Klaver adrian.klaver@aklaver.com