Re: jdbc high memory consumption for RAISE NOTICE output using function-call in Java

From: Daniel Blanch Bataller <dblanch(at)hoplasoftware(dot)com>
To: Georg Brünsing <georg(dot)bruensing(at)clickware(dot)de>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: jdbc high memory consumption for RAISE NOTICE output using function-call in Java
Date: 2015-12-08 12:02:19
Message-ID: 21F11FC1-33EB-4FDB-8B9C-0BB6198A96A2@hoplasoftware.com
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Hi Georg:

Could you elaborate a bit more why do you want to RAISE NOTICE 150000 times?

Regards

- Daniel.

> El 8 dic 2015, a las 11:37, Georg Brünsing <georg(dot)bruensing(at)clickware(dot)de> escribió:
>
> The function creates ~16MB output. The VM needs ~200MB over statement.executeQuery(...).
>
> CREATE OR REPLACE FUNCTION Test_Grosse_Logdatei() returns INTEGER AS
> $$
> DECLARE
> BEGIN
> FOR i IN 1..150000 LOOP
> RAISE notice '123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 ';
> END LOOP;
>
> RETURN 0;
> END;
> $$
> language plpgsql;
>
> How can we reduce this?
>
> Georg Brünsing
>
> postgresql-9.4-1206-jdbc4.jar + postgresql-9.1-902.jdbc4.jar
> psql (PostgreSQL) 9.3.1
> Java(TM) SE Runtime Environment (build 1.8.0_66-b18) + Java(TM) SE Runtime Environment (build 1.7.0_75-b13) + Java(TM) SE Runtime Environment (build pxa6460sr7-20091215_02(SR7))
> JDK 6-8
> Windows/Linux
>
>

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