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Thread: cannot connect to server

cannot connect to server

From
srikanth subramaniam
Date:
I have a standalone machine, I run PostgreSQL on this machine only. I installed the software 3 years back. My OS is Windows Vista Business.

 I have anti virus installed on this machine
I also have internet connection on this machine
It was working till Friday. I have been using the machine, but did not  open Postgres. On Sunday when I tried to open it gave me the message. Before that there was a problem with Anti virus

Message when I start PG Admin:

The server doesn't accept connections: the connection library reports
could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "127.0.0.1" and accepting TCP/IP connections on port 5432?
If you encounter this message, please check if the server you're trying to contact is actually running PostgreSQL on the given port. Test if you have network connectivity from your client to the server host using ping or equivalent tools. Is your network / VPN / SSH tunnel / firewall configured correctly?
For security reasons, PostgreSQL does not listen on all available IP addresses on the server machine initially. In order to access the server over the network, you need to enable listening on the address first.
For PostgreSQL servers starting with version 8.0, this is controlled using the "listen_addresses" parameter in the postgresql.conf file. Here, you can enter a list of IP addresses the server should listen on, or simply use '*' to listen on all available IP addresses. For earlier servers (Version 7.3 or 7.4), you'll need to set the "tcpip_socket" parameter to 'true'.
You can use the postgresql.conf editor that is built into pgAdmin III to edit the postgresql.conf configuration file. After changing this file, you need to restart the server process to make the setting effective.
If you double-checked your configuration but still get this error message, it's still unlikely that you encounter a fatal PostgreSQL misbehaviour. You probably have some low level network connectivity problems (e.g. firewall configuration). Please check this thoroughly before reporting a bug to the PostgreSQL community.

Please tell me wat to do, I have lots of data in it.
If the problem with firewall or antivirus, how do I see
If it is TCP/IP problem how do I see and set

Re: cannot connect to server

From
John R Pierce
Date:
On 03/20/11 3:06 AM, srikanth subramaniam wrote:
> Please tell me wat to do, I have lots of data in it.
> If the problem with firewall or antivirus, how do I see
> If it is TCP/IP problem how do I see and set

it sounds like postgres might not be running at all.    I'd check the
end of the server's logfiles to see if it logged any reason for
quitting, fix that and restart. (repeat until it works)

Re: cannot connect to server

From
tomas@tuxteam.de
Date:
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Srikanth,

hae a look at this thread:

  <http://bytes.com/topic/postgresql/answers/627208-problem-windows-postgresql-8-1-service>

Most probably the cause on your computer is different, but you can get
some ideas about where to find log files and how to start services
manually.


If you manage to start the PostgreSQL service manually, then you hae at
least partitioned the problem in half.

Maybe there are Windows experts around here who'd like to chime-in.

Regards and good luck
- -- tomás
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