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List:       postgresql-general
Subject:    [HACKERS] Problem with postgresql database connection in combination with HUAWEI data modem
From:       Jürgen_Wolfsgruber <juergen.wolfsgruber () gmail ! com>
Date:       2011-01-31 9:16:22
Message-ID: 09D01FEA-78F8-437C-A715-BDA0282BD2B9 () gmail ! com
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Hello,

I discussed my problem at www.pg-forum.de with Mr. Scherbaum (ADS)  and he \
recommended me to inform you about this problem.

I worked on my Mac-Book (Mac OS X 10.6.6) with postgresql database version 9 \
(postgresql-9.0.1-1-osx.dmg). After installing and connecting my HUAWEI E122 data \
modem (net provider 3 (drei)), I have detected, that I could't connect to database.   \
Disconnecting the HUAWEI modem has no effects. I could not connect to database. \
Restarting the system makes the database available again. The problem occurs exactly \
at connecting to internet from 3DataManager. There are no problems with connecting \
USB-Stick to Mac Book or starting the 3DataManager. 

I installed the postgresql-database with default settings:

host: localhost
port: 5432
user: postgres

listen_addresses: *

This is a netstat-result after connecting via HUAWEI data modem:

Active Internet connections (including servers)
Proto Recv-Q Send-Q Local Address Foreign Address (state)
tcp4 0 0 178.113.226.250..52044 c-98-245-185-91..56489 ESTABLISHED
tcp4 0 0 *.21234 *.* LISTEN
tcp4 0 0 *.postgresql *.* LISTEN
tcp6 0 0 *.postgres *.* LISTEN
tcp4 0 0 .psf.ipp *.* LISTEN
tcp6 0 0 localhost.ipp *.* LISTEN

Trying to start a telnet-connection, the result was:

telnet 127.0.0.1 5432
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Operation timed out
telnet: Unable to connect to remote host

As I had no idea, what the problem could be, I tried installing the latest version of \
postgresql (postgresql-9.0.2-1-osx.dmg), maybe that this problem is fixed now.  But \
it has no effect. 

Then I tried reproducing the problem on my Windows 7 system. I installed the HUAWEI \
data stick and connected it to the internet. 

I could connect to database without problems!! So I checked the version of postgresql \
on my windows system. The version is 8.4! (postgresql-8.4.2-1-windows.exe)

After uninstalling of postgresql 9 from my Mac Book and installing the latest 8.4 \
version (postgresql-8.4.6-1-osx.dmg), the problem was also solved.

Maybe that the problem is a 32/64 bit problem. 

best regards,

Juergen Wolfsgruber




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