Emctl is confused

Question

I have big networking problem on Oracle Ent. Linux 4 (Linuxora), as virtual OS, guest in Win XP. Machine Linuxora is set up to use STATIC IP address=192.168.192.72 - host Windows XP uses 192.168.192.2
the instance (Oracle 10.2) starts up, the listener is up also, even thoough the line "Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service..." gives me unease, because I don't undestand the meaning.
THE PROBLEM:
when I open http://192.168.192.72:1158/em --> emctl says that database instanse is down, the listener is down also: Status          
Failed
Details          ORA-12541: TNS:no listener (DBD ERROR: OCIServerAttach)
Browser IE from Windows XP can't visit http://192.168.192.72:1158/em --> "The page cannot be displayed", even though it sees correctly http://192.168.192.72 (Apache home page)
THE FOLLOWING ARE DETAILS about 'uname -a', ping-ing around, 'ifconfig', 'lsnrctl' and 'emctl start dbconsole'
[root@Linuxora ~]# uname -a
Linux Linuxora 2.6.9-42.0.0.0.1.ELhugemem #1 SMP Sun Oct 15 14:06:18 PDT 2006 i686 i686 i386 GNU/Linux
OS= Oracle Enerprise Linux 4, Machine name=Linuxora, it is VMware - guest OS within Windows XP; settings: Private Network with the host, The Host is disconnected from outter world. However, VMWare connects the host (Win Xp) and the guest (Linuxora) through a virtual switch.
[root@Linuxora ~]# ping 192.168.192.2
PING 192.168.192.2 (192.168.192.2) 56(84) bytes of data.
64 bytes from 192.168.192.2: icmp_seq=0 ttl=128 time=1.79 ms
64 bytes from 192.168.192.2: icmp_seq=1 ttl=128 time=0.223 ms
64 bytes from 192.168.192.2: icmp_seq=2 ttl=128 time=0.167 ms
64 bytes from 192.168.192.2: icmp_seq=3 ttl=128 time=0.200 ms
[root@Linuxora ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 Linuxora
127.0.0.1 localhost
[root@Linuxora ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:94:09:E9
inet addr:192.168.192.72 Bcast:192.168.192.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe94:9e9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:84 errors:0 dropped:0 overruns:0 frame:0
TX packets:76 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12824 (12.5 KiB) TX bytes:11395 (11.1 KiB)
Interrupt:193 Base address:0x2024
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:7721 errors:0 dropped:0 overruns:0 frame:0
TX packets:7721 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX bytes:10182292 (9.7 MiB) TX bytes:10182292 (9.7 MiB)
[root@Linuxora ~]# ping Linuxora
PING Linuxora (127.0.0.1) 56(84) bytes of data.
64 bytes from Linuxora (127.0.0.1): icmp_seq=0 ttl=64 time=0.683 ms
64 bytes from Linuxora (127.0.0.1): icmp_seq=1 ttl=64 time=0.136 ms
64 bytes from Linuxora (127.0.0.1): icmp_seq=2 ttl=64 time=0.101 ms
[root@Linuxora ~]# ping 192.168.192.72
PING 192.168.192.72 (192.168.192.72) 56(84) bytes of data.
64 bytes from 192.168.192.72: icmp_seq=0 ttl=64 time=0.165 ms
64 bytes from 192.168.192.72: icmp_seq=1 ttl=64 time=0.150 ms
64 bytes from 192.168.192.72: icmp_seq=2 ttl=64 time=0.135 ms
[root@Linuxora ~]# ping localhost
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from Linuxora (127.0.0.1): icmp_seq=0 ttl=64 time=0.155 ms
64 bytes from Linuxora (127.0.0.1): icmp_seq=1 ttl=64 time=0.128 ms
64 bytes from Linuxora (127.0.0.1): icmp_seq=2 ttl=64 time=0.163 ms
when I start the listener:
LSNRCTL> start
Starting /ora/ohome/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /ora/ohome/10.2.0/db_1/network/admin/listener.ora
Log messages written to /ora/ohome/10.2.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.192.72)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 28-JUL-2010 09:44:05
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /ora/ohome/10.2.0/db_1/network/admin/listener.ora
Listener Log File /ora/ohome/10.2.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.192.72)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>
[oracle@Linuxora bin]$ ./emctl start dbconsole
TZ set to US/Eastern
Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0
Copyright (c) 1996, 2005 Oracle Corporation. All rights reserved.
http://Linuxora:1158/em/console/aboutApplication
Starting Oracle Enterprise Manager 10g Database Control ................ started.
Logs are generated in directory /ora/ohome/10.2.0/db_1/Linuxora_fish/sysman/log
thnx

Answer 1

yes, it worked and my que. is answered, as it was answered. Can you suggest what to do to make sql+ and sqldeveloper to see this instance from windows hosts - because neither IE sees http://192.168.192.72:1158/em - nor sql+ can connect (BY using either of the service names) to the instance: (windows firewall is off, and it can see http://192.168.192.72/ , and it can ping it)
the content of windows client tnsnames.ora:
FISH_LINUXORA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.192.72)(PORT = 1521))
(CONNECT_DATA =
(SID = fish)
(SERVER = DEDICATED)
FISH =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = linuxora)(PORT = 1521))
(CONNECT_DATA =
(SID = fish)
(SERVER = DEDICATED)
yes, there is a sub-dir $ORACLE_HOME/Linuxora_fish. 'fish' is my $ORACLE_SID
What is the output of:
#hostname
Linuxora
#domainname
(none)
/etc/hosts now is:
127.0.0.1 localhost
192.1689.192.72 Linuxora
thnx