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Message-ID: <a97c77030611181115p58f7f11eh666b66e86d6c5fcd@mail.gmail.com>
Date: Sun, 19 Nov 2006 00:45:45 +0530
From: "Rajesh Kumar Mallah" <mallah.rajesh@gmail.com>
To: "Tom Lane" <tgl@sss.pgh.pa.us>
Subject: Re: transactional shared variable in postgresql
Cc: pgsql-sql@postgresql.org
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On 11/19/06, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> "Rajesh Kumar Mallah" <mallah.rajesh@gmail.com> writes:
> > In our webapps, we use the same username to connect to the database
> > for all kind of updates. Hence we are not able to makeout whoo modified
> > what . However at application level we have different "userid" for
> different
> > users of the system. we want to somehow pass this "userid"  to the
> databasee
> > server  and accesss it from the triggers that implement the audit
> functions.
>
> Perhaps it would be better to make your "userid" be the actual database
> user?  But anyway, the custom GUC variable facility might serve your


Hi,

wouldnt' it affect the connection pooling , i am using DBI::Cache and
mod_perl ?

needs.
> http://www.postgresql.org/docs/8.1/static/runtime-config-custom.html



i dont think i understand the usage properly,

 i did the below postgresql.conf
custom_variable_classes = 'general'             # list of custom variable
class names
general.employee = ''

am i supposed to see the variable general.employee when i do "show all " ?
i did not see it in fact!

my question is how can i set it and read it

regds
Mallah.


                        regards, tom lane
>

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<br><br><div><span class="gmail_quote">On 11/19/06, <b class="gmail_sendername">Tom Lane</b> &lt;<a href="mailto:tgl@sss.pgh.pa.us">tgl@sss.pgh.pa.us</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
&quot;Rajesh Kumar Mallah&quot; &lt;<a href="mailto:mallah.rajesh@gmail.com">mallah.rajesh@gmail.com</a>&gt; writes:<br>&gt; In our webapps, we use the same username to connect to the database<br>&gt; for all kind of updates. Hence we are not able to makeout whoo modified
<br>&gt; what . However at application level we have different &quot;userid&quot; for different<br>&gt; users of the system. we want to somehow pass this &quot;userid&quot;&nbsp;&nbsp;to the databasee<br>&gt; server&nbsp;&nbsp;and accesss it from the triggers that implement the audit functions.
<br><br>Perhaps it would be better to make your &quot;userid&quot; be the actual database<br>user?&nbsp;&nbsp;But anyway, the custom GUC variable facility might serve your</blockquote><div><br>Hi,<br><br>wouldnt' it affect the connection pooling , i am using DBI::Cache and mod_perl ? 
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">needs.<br><a href="http://www.postgresql.org/docs/8.1/static/runtime-config-custom.html">
http://www.postgresql.org/docs/8.1/static/runtime-config-custom.html</a></blockquote><div><br><br>i dont think i understand the usage properly,<br><br>&nbsp;i did the below postgresql.conf<br>custom_variable_classes = 'general'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; # list of custom variable class names
<br>general.employee = ''<br><br>am i supposed to see the variable general.employee when i do &quot;show all &quot; ?<br>i did not see it in fact!<br><br>my question is how can i set it and read it <br><br>regds<br>Mallah.
<br>&nbsp;<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;regards, tom lane<br></blockquote></div><br>

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