Re: [ODBC] BIRT report opening multiple connections

From: "Lussier, Denis" <denisl(at)openscg(dot)com>
To: Barry Bell <Barry(dot)Bell(at)hartehanks(dot)com>
Cc: Dave Cramer <pg(at)fastcrypt(dot)com>, "pgsql-jdbc(at)postgresql(dot)org" <pgsql-jdbc(at)postgresql(dot)org>
Subject: Re: [ODBC] BIRT report opening multiple connections
Date: 2014-08-15 13:49:24
Message-ID: CAHKhnVX=OsxEY9jJY5Lc8qG0RUa8KasQ6Fz+WTqmjjNiOyaEzA@mail.gmail.com
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My suspicion is that Barry is deploying his BIRT reports in a web container
that is using connection pooling to the RDBMS. Since the BIRT report
doesn't seem to be issuing a a close(), the connection pooler keeps using a
new physical connection for each subquery.

--Luss

On Fri, Aug 15, 2014 at 9:01 AM, Barry Bell <Barry(dot)Bell(at)hartehanks(dot)com>
wrote:

> Since everything is the same besides the DB connection,
>
> Then it must be the how BIRT is using the JDBC driver?
>
>
>
> *Barry Bell*
> Senior Developer/Analyst
> Logistics
> Harte Hanks
>
> 1525 NW 3rd ST
> Deerfield Beach FL, 33442
>
> 954-429-3771 Ext 267 office
> 954-281-1464 fax
>
> [image:
> https://4b2685446389bc779b46-5f66fbb59518cc4fcae8900db28267f5.ssl.cf2.rackcdn.com/email-sig-hh.png]
> <http://www.hartehanks.com/>
>
> hartehanks.com <http://www.hartehanks.com> / linkedin
> <http://www.linkedin.com/company/hartehanks> / twitter
> <http://www.twitter.com/HarteHanks> / facebook
> <http://www.facebook.com/HarteHanks>
>
>
>
> *From:* davecramer(at)gmail(dot)com [mailto:davecramer(at)gmail(dot)com] *On Behalf Of *Dave
> Cramer
> *Sent:* Friday, August 15, 2014 8:59 AM
>
> *To:* Barry Bell
> *Cc:* pgsql-jdbc(at)postgresql(dot)org
> *Subject:* Re: [JDBC] [ODBC] BIRT report opening multiple connections
>
>
>
> Barry,
>
>
>
> I think we are all at a loss as to how it could behave differently for
> postgres since this is just JDBC.
>
>
>
> The driver doesn't "control" how people connect to it.
>
>
> Dave Cramer
>
> dave.cramer(at)credativ(dot)ca
> http://www.credativ.ca
>
>
>
> On 15 August 2014 08:56, Barry Bell <Barry(dot)Bell(at)hartehanks(dot)com> wrote:
>
> It creates only 1 connection in ORacle and Mysql.
>
>
>
> Under postgees, it creates a connection for each query in the report.
>
> (report may have 50 queries).
>
>
>
> *Barry Bell*
> Senior Developer/Analyst
> Logistics
> Harte Hanks
>
> 1525 NW 3rd ST
> Deerfield Beach FL, 33442
>
> 954-429-3771 Ext 267 office
> 954-281-1464 fax
>
> [image:
> https://4b2685446389bc779b46-5f66fbb59518cc4fcae8900db28267f5.ssl.cf2.rackcdn.com/email-sig-hh.png]
> <http://www.hartehanks.com/>
>
> hartehanks.com <http://www.hartehanks.com> / linkedin
> <http://www.linkedin.com/company/hartehanks> / twitter
> <http://www.twitter.com/HarteHanks> / facebook
> <http://www.facebook.com/HarteHanks>
>
>
>
> *From:* davecramer(at)gmail(dot)com [mailto:davecramer(at)gmail(dot)com] *On Behalf Of *Dave
> Cramer
> *Sent:* Friday, August 15, 2014 8:49 AM
>
>
> *To:* Barry Bell
> *Cc:* pgsql-jdbc(at)postgresql(dot)org
> *Subject:* Re: [JDBC] [ODBC] BIRT report opening multiple connections
>
>
>
> Barry,
>
>
>
> How can it not create a connection in Oracle or MySql ?
>
>
>
>
>
>
> Dave Cramer
>
> dave.cramer(at)credativ(dot)ca
> http://www.credativ.ca
>
>
>
> On 15 August 2014 08:45, Barry Bell <Barry(dot)Bell(at)hartehanks(dot)com> wrote:
>
> BIRT is opening the connections in Postgres,
>
> It does not do this in Oracle or MySQL.
>
>
>
> Any Ideas how get it to creating a new connection for each query in the
> BIRT report?
>
>
>
> *Barry Bell*
> Senior Developer/Analyst
> Logistics
> Harte Hanks
>
> 1525 NW 3rd ST
> Deerfield Beach FL, 33442
>
> 954-429-3771 Ext 267 office
> 954-281-1464 fax
>
> [image:
> https://4b2685446389bc779b46-5f66fbb59518cc4fcae8900db28267f5.ssl.cf2.rackcdn.com/email-sig-hh.png]
> <http://www.hartehanks.com/>
>
> hartehanks.com <http://www.hartehanks.com> / linkedin
> <http://www.linkedin.com/company/hartehanks> / twitter
> <http://www.twitter.com/HarteHanks> / facebook
> <http://www.facebook.com/HarteHanks>
>
>
>
> *From:* davecramer(at)gmail(dot)com [mailto:davecramer(at)gmail(dot)com] *On Behalf Of *Dave
> Cramer
> *Sent:* Thursday, August 14, 2014 7:05 PM
> *To:* Barry Bell
> *Cc:* pgsql-jdbc(at)postgresql(dot)org
> *Subject:* Re: [JDBC] [ODBC] BIRT report opening multiple connections
>
>
>
> How would that be possible ? JDBC doesn't open the connections ?
>
>
> Dave Cramer
>
> dave.cramer(at)credativ(dot)ca
> http://www.credativ.ca
>
>
>
> On 14 August 2014 16:20, Barry Bell <Barry(dot)Bell(at)hartehanks(dot)com> wrote:
>
>
>
> We have BIRT report with multiple Queries inside the report.
> Each Qurery inside the BIRT report is creating a different connection.
> Any Ideas how to fix this? (Report may have upto 100 queries)
>
>
> The problem: Each call of dataset open a connection to the source but
> does not close it after dataset execution.
> (This does not happen under a different DB like Oracle or Mysql)
>
> Barry Bell
>
>
> --
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