Re: Too many SET TimeZone and Application_name queries - Mailing list pgsql-general

From Amarendra Konda
Subject Re: Too many SET TimeZone and Application_name queries
Date
Msg-id CAJNAD0=-prg8r21ff=uazhD=1YpEzvB2-CBmxOp4P4DzKuQ5pQ@mail.gmail.com
Whole thread Raw
In response to Re: Too many SET TimeZone and Application_name queries  (Adrian Klaver <adrian.klaver@aklaver.com>)
Responses Re: Too many SET TimeZone and Application_name queries
List pgsql-general
Hi Adrian,

Thanks a lot for the response. 

We are using JDBC Driver 42.2.8 along with the Tomcat Server on Java 8. As part of application code, We are not setting timezone (or) application names. One observation was, application was querying columns of the datatype "timestamp without time zone" .

Regards, Amarendra 


On Fri, Oct 11, 2019 at 7:33 PM Adrian Klaver <adrian.klaver@aklaver.com> wrote:
On 10/11/19 4:49 AM, Amarendra Konda wrote:
> Hi,
>
> In our test environment, it was observed that there are too many queries
> were getting fired to the database server, even though they are not part
> of the SQL query execution.
>
> And the number of queries that were coming to server are very high. Can
> you please suggest on how to avoid these queries to the database server ?

My guess is your application server/framework is setting the below.
What are you using for above?

>
>
> 2019-10-10 13:37:25 UTC:172.31.77.194(36920):
> user1@new_unity_green1:[2549]:LOG:  duration: 0.081 ms  statement: *SET
> application_name='PostgreSQL JDBC Driver';*
> 2019-10-10 13:37:25 UTC:172.31.69.112(45682):
> user1@new_unity_green0:[3545]:LOG:  duration: 0.036 ms  statement: *SET
> TimeZone='UTC';*
> 2019-10-10 13:37:25
> UTC:172.31.77.194(36902):user1@new_unity_green1:[2112]:LOG:  duration:
> 0.177 ms  statement: *SET TimeZone='Etc/UTC';SET
> application_name='PostgreSQL JDBC Driver';*
>
>
> *_Environment_*
>
>   * PGBouncer 1.9
>   * JDBC Driver 42.2.8
>   * Java 1.8
>   * PostgreSQL 9.6.2 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.3
>     20140911 (Red Hat 4.8.3-9), 64-bit
>
>
> Application Server, pgBouncer and database server are all configured
> with UTC only.
>
> =>show timezone;
>   TimeZone
> ----------
>   UTC
>
> Thanks in advance,
>
> Regards, Amarendra
>
>
>
>
>
>


--
Adrian Klaver
adrian.klaver@aklaver.com

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