Changin from IPs to hostnames in tnsnames and listener heads to TNS-12541
Hello.
In order to prevent problems and extrawork in future with planned IP changes, i want to change the tnsnames and listener.ora server configuration files.
Now they are using the IP in the HOST parameter, and I want to use the hostname. But it doesnt works:
TNSNAMES.ORA:
VCSBD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = tcp)(HOST = 62.37.231.78)(PORT = 1524))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = vcsbd)
LISTENER.ORA:
LISTENER_VCSBD=
(ADDRESS_LIST=
(ADDRESS=
(PROTOCOL=tcp)
(HOST=62.37.231.78)
(PORT=1524)
(ADDRESS=
(PROTOCOL=ipc)
(KEY=vcsbd)
SID_LIST_LISTENER_VCSBD=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=vcsbd)
(SID_NAME=vcsbd)
(SERVICE_NAME=vcsbd)
(ORACLE_HOME=/usr/oracle/product/11.2.0)
TESTING: --
$ tnsping vcsbd
TNS Ping Utility for Linux: Version 11.2.0.2.0 - Production on 05-OCT-2012 13:32:30
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Archivos de parámetros utilizados:
/usr/oracle/product/11.2.0/network/admin/sqlnet.ora
Adaptador TNSNAMES utilizado para resolver el alias
Intentando contactar con (DESCRIPTION = (ADDRESS = (PROTOCOL = tcp)(HOST = 62.37.231.78)(PORT = 1524)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = vcsbd)))
Realizado correctamente (0 mseg)I want to change the HOST parameter to server hostname, in order to make oracle resolve the hostname from the /etc/hosts.
But wen I change it, I get TNS-12541 errors when tnsping. Ping works, but tnsping not.
updating TNSNAMES:
VCSBD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = tcp)(HOST = servervcs)(PORT = 1524))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = vcsbd)
updating LISTENER.ORA
LISTENER_VCSBD=
(ADDRESS_LIST=
(ADDRESS=
(PROTOCOL=tcp)
(HOST=servervcs)
(PORT=1524)
(ADDRESS=
(PROTOCOL=ipc)
(KEY=vcsbd)
SID_LIST_LISTENER_VCSBD=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=vcsbd)
(SID_NAME=vcsbd)
(SERVICE_NAME=vcsbd)
(ORACLE_HOME=/usr/oracle/product/11.2.0)
TESTING: ---
$ cat /etc/hosts:
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 servervcs localhost.localdomain localhost
62.37.231.78 servervcs
#62.37.231.68 servervcs
::1 localhost6.localdomain6 localhost6
$ lsnrctl reload LISTENER_VCSBD
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 05-OCT-2012 13:37:05
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Conectándose a (ADDRESS=(PROTOCOL=tcp)(HOST=servervcs)(PORT=1524))
TNS-12541: TNS:no hay ningún listener
TNS-12560: TNS:error del adaptador de protocolo
TNS-00511: No hay ningún listener
Linux Error: 111: Connection refused
Conectándose a (ADDRESS=(PROTOCOL=ipc)(KEY=vcsbd))
El comando ha terminado correctamente
$ lsnrctl status LISTENER_VCSBD
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 05-OCT-2012 13:37:12
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Conectándose a (ADDRESS=(PROTOCOL=tcp)(HOST=servervcs)(PORT=1524))
TNS-12541: TNS:no hay ningún listener
TNS-12560: TNS:error del adaptador de protocolo
TNS-00511: No hay ningún listener
Linux Error: 111: Connection refused
Conectándose a (ADDRESS=(PROTOCOL=ipc)(KEY=vcsbd))
LISTENER STATUS
Alias LISTENER_VCSBD
Versión TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Fecha de Inicio 28-MAY-2012 12:04:16
Tiempo Actividad 130 días 1 hr. 32 min. 56 seg.
Nivel de Rastreo off
Seguridad ON: Local OS Authentication
SNMP OFF
Parámetros del Listener /usr/oracle/product/11.2.0/network/admin/listener.ora
Log del Listener /usr/oracle/diag/tnslsnr/efacturaES-BD1/listener_vcsbd/alert/log.xml
Recibiendo Resumen de Puntos Finales...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=62.37.231.78)(PORT=1524)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=vcsbd)))
Resumen de Servicios...
El servicio "vcsbd" tiene 2 instancia(s).
La instancia "vcsbd", con estado UNKNOWN, tiene 1 manejador(es) para este servicio...
La instancia "vcsbd", con estado READY, tiene 1 manejador(es) para este servicio...
El servicio "vcsbdXDB" tiene 1 instancia(s).
La instancia "vcsbd", con estado READY, tiene 1 manejador(es) para este servicio...
El comando ha terminado correctamente
$ ping servervcs
PING servervcs (127.0.0.1) 56(84) bytes of data.
64 bytes from servervcs (127.0.0.1): icmp_seq=1 ttl=64 time=0.017 ms
64 bytes from servervcs (127.0.0.1): icmp_seq=2 ttl=64 time=0.013 ms
--- servervcs ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.013/0.015/0.017/0.002 ms
$ tnsping vcsbd
TNS Ping Utility for Linux: Version 11.2.0.2.0 - Production on 05-OCT-2012 13:32:33
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Archivos de parámetros utilizados:
/usr/oracle/product/11.2.0/network/admin/sqlnet.ora
Adaptador TNSNAMES utilizado para resolver el alias
Intentando contactar con (DESCRIPTION = (ADDRESS = (PROTOCOL = tcp)(HOST = servervcs)(PORT = 1524)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = vcsbd)))
TNS-12541: TNS:no hay ningún listenerAny clue?
what i'm doing wrong? what did I forget?
Regards
Edited by: elvegaa_esp on 05-oct-2012 4:48
Sure
$ echo $HOSTNAME
AOC-BD1
$ /sbin/ifconfig
eth0 Link encap:Ethernet HWaddr **:**:**:**:**:**
inet addr:192.168.76.8 Bcast:192.168.76.255 Mask:255.255.255.0
inet6 addr: fe80::221:85ff:fe35:74c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:281062361 errors:0 dropped:0 overruns:0 frame:0
TX packets:68084207 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1817935227 (1.6 GiB) TX bytes:3856945523 (3.5 GiB)
Base address:0x3000 Memory:dfb40000-dfb60000
eth0:1 Link encap:Ethernet HWaddr **:**:**:**:**:**
inet addr:192.168.76.10 Bcast:192.168.76.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Base address:0x3000 Memory:dfb40000-dfb60000
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:210984342 errors:0 dropped:0 overruns:0 frame:0
TX packets:210984342 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3935512631 (3.6 GiB) TX bytes:3935512631 (3.6 GiB)
$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 AOC-BD1 localhost.localdomain
192.168.76.8 AOC-BD1 localhost.localdomain
$ cat /usr/oracle/product/10.2.0/network/admin/tnsnames.ora
AOC-BD1_AOCPROD_HN=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(Host=AOC-BD1)(Port=1521)))(CONNECT_DATA=(service_name=aoc-bd1_aocprod)(INSTANCE_NAME=aocprod)(SID=aocprod)))
$ cat /usr/oracle/product/10.2.0/network/admin/listener.ora
listener_aoc-bd1_aocprod=
(ADDRESS_LIST=
(ADDRESS=
(PROTOCOL=tcp)
(HOST=AOC-BD1)
(PORT=1521)
(ADDRESS=
(PROTOCOL=ipc)
(KEY=aoc)
SID_LIST_listener_aoc-bd1_aocprod=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=aoc-bd1_aocprod)
(SID_NAME=aocprod)
(SERVICE_NAME=aocprod)
(ORACLE_HOME=/usr/oracle/product/10.2.0)
STARTUP_WAIT_TIME_listener_aoc-bd1_aocprod=0
CONNECT_TIMEOUT_listener_aoc-bd1_aocprod=0
$ lsnrctl status listener_aoc-bd1_aocprod
LSNRCTL for Linux: Version 10.2.0.3.0 - Production on 08-OCT-2012 13:20:17
Copyright (c) 1991, 2006, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=AOC-BD1)(PORT=1521))
STATUS of the LISTENER
Alias listener_aoc-bd1_aocprod
Version TNSLSNR for Linux: Version 10.2.0.3.0 - Production
Start Date 17-DEC-2011 09:49:05
Uptime 248 days 13 hr. 13 min. 56 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /usr/oracle/product/10.2.0/network/admin/listener.ora
Listener Log File /usr/oracle/product/10.2.0/network/log/listener_aoc-bd1_aocprod.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=AOC-BD1)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=aoc)))
Services Summary...
Service "aoc-bd1_aocprod" has 1 instance(s).
Instance "aocprod", status UNKNOWN, has 1 handler(s) for this service...
Service "aocprod" has 1 instance(s).
Instance "aocprod", status READY, has 1 handler(s) for this service...
Service "aocprodXDB" has 1 instance(s).
Instance "aocprod", status READY, has 1 handler(s) for this service...
Service "aocprod_XPT" has 1 instance(s).
Instance "aocprod", status READY, has 1 handler(s) for this service...
The command completed successfully
$ tnsping AOC-BD1_AOCPROD_HN
TNS Ping Utility for Linux: Version 10.2.0.3.0 - Production on 08-OCT-2012 13:20:37
Copyright (c) 1997, 2006, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(Host=AOC-BD1)(Port=1521)))(CONNECT_DATA=(service_name=aoc-bd1_aocprod)(INSTANCE_NAME=aocprod)(SID=aocprod)))
OK (0 msec)
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---------------------------------------------------------------------------listener.ora
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SID_LIST_LISTENER =
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/////////////////////////////////////////////////////////////////////////////tnsnames.ora
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Thanks in advanceOK, here we go ... extra long as I intend to bookmark this and make reference, as this is a very common question ... skip to the bottom if you want my guess to the solution.
Oracle Net Services (formerly SQL*Net, Net8, Oracle Networking) has two parts - the client and the server side. I'll discuss the server first, then the client.
1) Server, and specifically Listener:
The Oracle Listener is a monitor that listens for Oracle service requests on one or more ports. Usually this is on TCP/IP port 1521. When it gets an Oracle request from any network client, it checks whether it's in the list of Oracle Services for which it is monitoring. If found, it will contact that service, request a connection for the client, tell the service and client where and how to connect, and get itself out of the loop.
Notes:
a) It can listen on behalf of any number of services;
b) A service can be a database instance, an EPG service (the DBMS_EPG is the replacement for Apache in the database in 10gR2), an external job, etc;
c) One listener can listen on behalf of multiple database instances;
d) The services can be listed in the LISTENER.ORA or they can self-register;
e) If databases self-register, they use the initialization parameter LOCAL_LISTENER
f) If self-registering, the listener should be up before the database
g) Shutting down the listener will stop future connections, but has no impact on existing ones.
One frequent point of confusion - a connection request on the local machine may loop out to the network and contact the listener, or it may bypass the listener entirely and use a bequeath adapter. The 'beq' connection is the 'normal' connection by "sqlplus / as sysdba" or "sqlplus system/manager" on the local machine (note that no @instance was used ... in *nix, that is derived from the $ORACLE_SID environment variable)
In your listener.ora, you specify global_dbname=oracle.gentoo and sid_name=oracle. I assume therefore you can find an initoracle.ora or spfileoracle.ora somewhere on your system.
2) Client:
A client that wants to connect to an Oracle service uses the client side of the Oracle Net Services. The definition of client includes: any Oracle client utiltiy (SQLPlus, SQLLoad, Forms, Reports, etc.); an Oracle database instance that wants to make a external procedure call or a dblink; third party tools such as ODBC and JDBC.
In SQL*Net version 1 the connection was made by specifying the target in the connect string ("user/password@host:listener_port:sid") and that is also used these days by many JDBC drivers, especially the Oracle Thin JDBC driver. Oracle's Easy connection mechanism uses a similar variant.
Since SQL*Net Version 2, Oracle has supported the concept of alias translation. Basically it's very similar in concept to DNS - give it the name of the service and tell it where to find the translation table. The translation tables include TNSNAMES.ORA, ONAMES servers (deprecated in 10g), LDAP usng Oracle's OiD. The choice of translation table, and alternate order if the lookup fails in one, is stored in the SQLNET.ORA (if one exists).
Assuming TNSNAMES.ORA, the chain of events is:
- get the alias to look up (in your case NORACLE);
- if the SQLNET.ORA has a DEFAULT_DOMAIN setting, (often =WORLD) append a dot and that value to the alias;
- go to the TNANSMES.ORA file pointed by the TNS_ADMIN variable (environment or registry), or (if not set) the one in the $ORACLE_HOME/network/admin directory;
- look up the first occurance of the alias;
- if found, use the protocol specified to request a connection to the host, usin DNS to unravel the host to an IP address if necessary (in your case TCP/IP, to TUX) ;
- if host connection if made, connect to the listener that is configured for that port (in your case 1521);
- if listener is there, ask it for connection to the service (in your case, you are asking for instance 'noracle');
i if the listener knowwss about the service, it will hand off the request.
Your problem appears to be asking for instance 'noracle' in the tnsnames but listeneing for 'oracle' at the listener. Of course, I can not see any auto-registered instances which you would get from "lsnrctl status" on the server. -
Best Practices: tnsnames.ora and listener.ora
I would like to know if it is better to use the public ip / public hostname or the virtual ip / virtual hostname in the tnsnames.ora and listener.ora files on the servers and clients. I have seen examples where the vip is used for all areas, and I have seen examples where the public has been used in all areas. And of course even some examples where both are used. It makes more sense to me to use the vip, as that is what is failed over But what is the public ip used for if all connections are made to the vip?
ThanksDatabase version: 10.2.0.4
Server OS: Red Hat Linux Enterprise 4.6 (RHEL4)
Oracle Rac configuration: 4 node cluster.
host file:
10.1.1.50 rac1.somcompany.com rac1priv # RAC1
10.1.1.51 rac2.somcompany.com rac2priv # RAC2
10.1.1.52 rac3.somcompany.com rac3priv # RAC3
10.1.1.53 rac4.somcompany.com rac4priv # RAC4
172.16.71.50 rac1.somcompany.com rac1pub # RAC1
172.16.71.51 rac2.somcompany.com rac2pub # RAC2
172.16.71.52 rac3.somcompany.com rac3pub # RAC3
172.16.71.53 rac3.somcompany.com rac4pub # RAC4
172.16.72.50 rac1.somcompany.com rac1vip # RAC1
172.16.72.51 rac2.somcompany.com rac2vip # RAC2
172.16.72.52 rac3.somcompany.com rac3vip # RAC3
172.16.72.53 rac3.somcompany.com rac4vip # RAC4
So if I was to create a tnsnames files on the servers, would I use the vip information as the host or the public information?
Would I use the same tnsnames files for the clients?
Would I use the vip or public address in the listener files?
Thanks -
IPS 4240 -email arlert configuration and Which mode
hi
My topology
1)
Internet-router(2ISP terminated in Single Router-two different Firewall-(ASA5510 and PIX 515e)-->inside interface connected in IPS4240--->From IPS to L33750 Switch.
Is right place to put IPS4240 and tell me IPS in which mode(inline or Promiscous).
2) I am able to see log in IPS 4240, i want to configure IPS alert to my mail id , where i need to start the configuration.? pl advise
thanks
KarthikEmail alert configuration is not supported in IPS/IDS.
I think you can configure in promiscuous mode as Customers requiring promiscuous mode (non-inline) deployments are encouraged to migrate to the Cisco IPS 4240 Sensor, which supports up to 250 Mbps of IPS throughput.
The below URL helps to configure IPS 4240 in promiscuous mode:
http://www.cisco.com/en/US/docs/security/ips/5.1/configuration/guide/cli/cliInter.html#wp1033699 -
How do I receive the alert message from IPS AIP SSM10?
There are several ways to see IDS alerts:
1. Log into the CLI (via ssh, or "session 1" form teh ASA console) and "show event alert past 01:00"
2. Log into the sensor via the web gui (https to the sensor's management IP address)
3. Configure the alerts to be sent to an external event collector or SIM. -
On 3G we cannot send Business emails from either our iPhones or Ipad and this also happens with some WiFi connections but not all. Yet we can always send emails from our Hotmail Account using both 3G and WiFi.
We bought the iPhones and Ipad so that we could send emails while we are out of the Office, but we are not able to do this unless we can find a WiFi connection. Incoming emails are fine. We use IMAP, for Business emails just incase this is relevant and I know that Hotmail is POP3.
Our technical IT knowledge is not great, so we look forward to your suggestions as to how to resolve this.Contact whomever supports the email account and get the correct Outgoing email server settings from them.
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