I'm trying to connect to a remote Firebird database "test" (alias already added). It is not an embedded server, and is installed on VM with IP 192.168.1.147.
Here is my connection string:
User=sysdba;Password=masterkey;Database=test;DataSource=192.168.1.147
However I got an error:
FirebirdSql.Data.FirebirdClient.FbException (0x80004005): Unable to complete network request to host "192.168.1.147". ---> Unable to complete network request to host "192.168.1.147".
I've done some research on that but haven't got a clue yet. Some help needed. Thanks
My IP address is 192.168.2.108, and I can ping that server IP successfully
Make sure that
Firebird is running
Firebird is listening on port 3050 on the specified IP (or on 0.0.0.0)
Your firewall allows access to port 3050
You're using the correct host name
For Linux, the Firebird port is closed by default. You need to modify RemoteBindAddress in /etc/firebird/2.5/firebird.conf from
RemoteBindAddress = localhost
to
RemoteBindAddress =
and restart service.
Make sure you have excluded tcp port 3050 in VMs' firewall.
Ok. I think your connection to firebird is faililing because the firebird client looks up the network service file by name and does not find gds_db in the services file.
If your connection string refers to the host by using IP, the Client might fail to identify it because it gethostbyname() and not by IP
Manually include this in the file and you should be fine.
C:\windows\system32\drivers\etc\services
Related
I Have a problem on Connect from Port Forwarding Database on Openshift :
Running Pods Postgresql :
I Try Connect to Container running the database to check process and psql command, then it works :
Next, I Try Port Forwarding for Try Connection from outside Openshift Cluster:
Then I Try Connect from Outside Cluster to connect Postgresql have Error: Connection Refuse
Im Using IP Based or Hostname / FQDN Not Working and Error Still Exist
And When I Try Check Firewall port it has been opened port 5432/TCP :
Anyone Can Help Me With This problem ?
Thanks
Note: Before I have Been Looking Documentation but Not Working Resolve the Problem
Source Documentation:
https://www.openshift.com/blog/openshift-connecting-database-using-port-forwarding
"psql: could not connect to server: Connection refused" Error when connecting to remote database
The oc port-forward command is forwarding from only your loopback interfaces.
If you are running your client on the same machine where the cluster is running, then use localhost as your "Host".
If you are running your client on a different machine, they you need more network redirection to get this to work. Please see this post for more information as well as work-arounds for your problem: Access OpenShift forwarded ports from remote host
I am curious why I can connect to the localhost server by specifying the loopback IP address (127.0.0.1) but not using the name 'localhost', when no internet connection is present in mongoDB compass? When I try to connect with the domain name I get the following error:
getaddrinfo ENOTFOUND localhost localhost:27017
I'm guessing the domain name lookup process is requiring the internet in order to convert localhost to 127.0.0.1. Not sure if I'm on the right track or not.
When you are connected to the internet the DNS service of your device handles the resolution of localhost. When you are not connected to the device the only way for your machine to know about the name localhost is the /etc/hosts file (or C:\Windows\System32\drivers\etc\hosts if you're running windows, latest versions of windows although might resolve localhost without using the hosts file).
I am using postgres database which is accessed by jboss and tomcat server.
My server accidentally restarted and then postgres service was not showing in the services list.
When I tried to open postgres local host server using pgadminIII it showed following error:
Server doesn't listen
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 "localhost" (::1) and accepting TCP/IP connections on port 5432? could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "localhost" (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.
Does this problem arise due to accessing same DB by two different servers?
My server accidentally restarted and then postgres service was not
showing in the services list.
You can't connect because it's not running. You can have as many clients connecting to a PostgreSQL server as your hardware can support - there is no problem with that.
Restart your PostgreSQL service. If it won't, check the logs for why. If you don't know where your PostgreSQL logs are now is a good time to find out. I can't tell you how to restart the service because you haven't said what OS you are running or how you installed PG. Check your documentation.
I am trying to use MongoDB for remote connection. First I tried localhost and internal ip address to build the connection. Both of them succeeded. Then I tried external ip address to connect on my own computer of MAC as an experiment first. I have created an admin user for the database in MongoDB. The bind_ip option is also commented in mongodb.conf. The firewall should also have been turned down. But the connection cannot been built still. Does anyone know the reason?
Thank you very much!
To allow connecting remote clients (which is your case) to MongoDB Server.
Make sure to do set bind_ip to either of values, in your mongodb.conf file -
Following is with any IP
bind_ip = 0.0.0.0
Following for bind to specific IP
bind_ip = 10.52.36.99 (or any specific IP)
I have created an application in delphi and backend is postgres when i run the application i get the following error
general sql error.could not connect to the server;no
connection could be made because the target machine actively refused
it.[127.0.0.1:1:5433 alias resumep
I uninstalled it and installed it again but it didnt work.Even i changed the port number while installing .
I changed the password and installed again but its giving same error
what is the solution to this problem?
The database cluster of a standard PostgreSQL installation is listening on port 5432. (You can, of course, set up additional db clusters on different ports or configure your database cluster to listen on any other port.)
Any particular reason you try 5433? This is probably the cause of your problem.
If no server is listening on port 5433, the connection is simply not possible.