All things being equal, the last reality check is to make sure your client machine is communicating with the server host. You can quickly test whether a TCP/IP client can reach the server, using the ping command in the command shell, as follows:
ping server_name // substituting the name you entered in the hosts file
If the connection is good and everything is properly configured, you should see something like this:
Press Ctrl+C to stop the ping responses.
If ping Fails
If you get something like this:
Bad IP address hotchicken
then your host name file entry for the server_name (in this example, hotchicken) may be missing or spelled incorrectly. For example, all identifiers on Linux/UNIX are casesensitive. Another cause might be simply that your server machine’s host name has not been configured.
If you see this:
Request timed out
it means that the IP address referred to in your host name file cannot be found in the subnet. Check that
Problems with Events
Although each client connects with the server through a single pipe, Firebird events —a callback mechanism that can channel event notifications back to clients from triggers and stored procedures —uses random available ports. On static, self-contained networks without internal firewalls, this usually causes no problems. On networks where there are multiple subnets, dynamic IP addressing, and tightly configured firewalls, the event channels can fail.
In Firebird 1.0.x, your network administrator needs to configure some way to ensure that a port is available that is always free, open, and static. It can be solved in one way or another on most networks.
Firebird 1.5 simplified matters and made it possible to configure an IP address in the network explicitly for events traffic. Use the firebird.conf parameter Remote AuxPort to set statically the IP address of an interface (card, router, gateway, etc.) that is available for event routing.
For more information about Firebird events, refer to Chapter Error Handling and Events.
Firebird Related Interview Questions
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|Linux Interview Questions||Mac OS X Deployment Interview Questions|
|Windows Administration Interview Questions||Windows Server 2003 Interview Questions|
|SQL Interview Questions||NoSQL Interview Questions|
|Advanced C++ Interview Questions|
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