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From: Paul M. Aoki <aoki@postgres.Berkeley.EDU>
To: Vivek Shivpuri <vivek@tis.telos.com>
Cc: postgres@postgres.Berkeley.EDU
Subject: Re: Mosaic and libpq
Date: Mon, 09 May 94 15:29:32 -0700
Message-ID: <199405092229.PAA29117@faerie.CS.Berkeley.EDU> (raw)
In-Reply-To: <199405092134.RAA07213@ozone.tis.telos.com.tis.telos.com>

Vivek Shivpuri <vivek@tis.telos.com> writes:
>  postgres. For some reason the program just hangs on
>    PQexec("begin");
> 
>    Before I make this call the program has succesfully executed
>    PQtrace();
>    PQsetdb("dbname");
>    buff=PQdb();
> 
>    I have tried removing all traces of the www interface and the program ran 
>    succesfully, so that's why I think the problem lies there.
> 
>  Unfortuately no one replied to this. I am having the exact same problem.

not knowing anything about how www clients work, it's a bit hard to 
suggest anything, but i can make the following observations:
	- somewhere in PQexec is the first attempt to make a network
	connection.
	(e.g., a child process of mosaic or httpd may not have the 
	environment set up as you might expect, which is one factor
	that may bollix the attempt to make a network connection.)
	- you have both the libpq source and a debugger; it can't be 
	*that* hard to figure out exactly what operation is blocking..?
	(i.e., run gdb on a client compiled with -g, get to the call in
	PQexec and just keeping hitting "step")

(does stderr have a place to go?  can you see what it is?)
--
  Paul M. Aoki  |  CS Div., Dept. of EECS, UCB  |  aoki@postgres.Berkeley.EDU
                |  Berkeley, CA 94720           |  ...!uunet!ucbvax!aoki

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