Oracle db listening on all interfaces

Hi,
I have oracle xe installed on a server linux.
Customer did some changes on the nw and now the database does not listen on all interfaces but just on 127.0.0.1:1521.
I need Oracle listening on this port but on all available ips in this server, in other words 0.0.0.0:1521.
I can I achieve this? I am not a db expert.
I need to do this because I have many installed product, especially OID, and I do not know what IP is actually used to connect to the database.
Thanks much.

As1mov wrote:
This is ok, the problem is that OID does not create the LDAP listner even though it seams to connect correctly to the database. Missing something here from the problem description. A LDAP listener/server is not the same an Oracle listener. Uses different tcp ports and different application protocols. Also, you mentioned Oracle XE - last time I looked this was vanilla Oracle RDBMS. No OID included.
If you are talking about not being able to connect to an OID server - that requires oidmon and oidctl (console commands) to be used to start up the OID server (with its listener).
Should I take care of something if I add a new ip address to the linux box?Assuming that the Oracle Listener is not configured with +(IP=FIRST)+, then no - I would expect that bouncing the listener is all that is needed for the listener to start listening on port 1521 using the +0.0.0.0+. And this can be checked by using netstat or lsof commands (the latter can be used to list the tcp ports opened by the listener process).
If you have an error - please provide as much technical details as possible. Such as the listener.ora file, the alias entry used from tnsnames.ora, the output of a sqlplus session that attempted to use this alias to connect and failed, etc.
I'm not clear at all as to what the problem is that you're facing with the listener and multiple interfaces/IP addresses on the same server.

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Oracle db listening on all interfaces

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