Proble to connect oracle DB from Sql Developer

Question

1st I installed fedora 13 on VirtualBox 4.1 machine and then i installed a oracle 10g(the db run correctly and listener too).
the listener paramater:
LISTENER =(ADDRESS_LIST=(ADDRESS=(PROTOCOL=tcp)(HOST=10.0.0.8)(PORT=1521))
2nd in my local machine (Fedora 13 too) i installed a sql developer and when i trying connect to oracle on virutal machine i recived a next error
using connection Basic:Status: Failure -Test failed: IO Error: The Network Adapter could not establish the connection.
the parameter i settings are:
connection name:XXXX
username name:user_created
password:XXXX
Hostname = 10.0.0.8
port = 1521
SID = the_same_of_database
i can make ping well to the virtual machine.
using connection TNS: Status: Failure -Test failed. Required property 'hostname' is not set on the DatabaseProvider.
But i don't know where is the tnsnames file for sql developer.
i don't know if i have to install any JDBC for sqldeveloper.
i can't make tnsping because on my local machine i don't have installed.

Answer 1

Hi, excuse me, but mi trouble come from my listener.ora,
Help me please, my listener settings is:
Listener
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = ipc)(KEY = PNPKEY))
(ADDRESS = (PROTOCOL = tcp)(HOST = fe13oracle01.localdomain)(PORT = 1521))
) #AFTER I RAN THE LSNRCTL START THOSE parentheses WAS BECAMED RED
) #AFTER I RAN THE LSNRCTL START THOSE parentheses WAS BECAMED RED
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = MY_SID)
(ORACLE_HOME = /opt/app/oracle/product/10.1.0/db_1)
(SID_NAME = MY_SID)
(PROGRAM = extproc)
lsnrctl start:
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 16-JAN-2012 23:29:28
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
The command completed successfully
[oracle@fe13oracle01 ~]$ lsnrctl start
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 16-JAN-2012 23:29:36
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Starting /opt/app/oracle/product/10.1.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /opt/app/oracle/product/10.1.0/db_1/network/admin/listener.ora
Log messages written to /opt/app/oracle/product/10.1.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=fe13oracle01.localdomain)(PORT=1521)))
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 16-JAN-2012 23:29:36
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/app/oracle/product/10.1.0/db_1/network/admin/listener.ora
Listener Log File /opt/app/oracle/product/10.1.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=fe13oracle01.localdomain)(PORT=1521)))
Services Summary...
Service "MY_SID" has 1 instance(s).
Instance "MY_SID", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
Tnsnames:
PROPHET =
(DESCRIPTION_LIST =
(ADDRESS = (PROTOCOL = tcp)(HOST = 10.0.0.8)(PORT = 1521)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = MY_SID)
On my (ORACLE_SID =) on my .bash_profile i put sid_name UPPER, i don't know if that point has any influences