TNS listener getting down

Hi all,
I am having Oracle 11g R1 installed on windows 2003 SP1 64bit std Edition. I have migrated from 9i to 11g.
Clients are using Oracle 9i.
The application i am using is ASP and VB.net.
The performance is much more increased in 11g compared to 9i.
Issues:
1) From the last 10 months i am facing the listener down.It happens 3 times and it affects my transaction. This happens when i connect from VB.net.
2) Second issue is my undo tablespace is getting filled very fast. It is not getting refreshed.

user12119634(bobs) wrote:
Hi all,
I am having Oracle 11g R1 installed on windows 2003 SP1 64bit std Edition. I have migrated from 9i to 11g.
Clients are using Oracle 9i.
The application i am using is ASP and VB.net.
The performance is much more increased in 11g compared to 9i.
Issues:
1) From the last 10 months i am facing the listener down.It happens 3 times and it affects my transaction. This happens when i connect from VB.net.I won't consider this such a big thing since in your own words , it has happened just 3 times within 10 months . You are on Windows and due to a service not responding properly of listener, it may happen very easily on a Windows environment. No one here can tell you why it happened( though not often) . Did you check the listener's log file?
2) Second issue is my undo tablespace is getting filled very fast It is not getting refreshed.Undo would be filled based on the activity you do. If you are doing a lots of transactions , generating the Undo blocks in large number, its a natural outcome. Undo retention would work for the committed transactions. You may want to check with the undo advisor for the recommended size of the Undo tablespace for your database.
HTH
Aman....

Similar Messages

Listener getting down frequentky

Hi All
We are in RAC with two nodes in vesrion Oracle Database 10g Release 10.1.0.5.0
Os Details -Windows 2003 32-bit OS (4 Gb ram each)
My SGA and PGA are 1536M and 650M
Users connecting to each instances are more than 200...to 250 per instance
We get this tns error in the listerner log files of the second instance and first instancein last few day's
Now we checked the number of users connected to server while we get this TNS error are 170 and 240 in the first and second instancerespectively
Listener get's down automatically with this below error...
16-SEP-2009 11:52:06 * (CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl)(CID=(PROGRAM=D:\orant\BIN\RWRBE60.exe)(HOST=XXXXXXXXX-CTX02)(USER=ajmancashier))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.35)(PORT=4391)) * establish * orcl * 12500
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 233: Unknown error
16-SEP-2009 11:52:09 * (CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl)(CID=(PROGRAM=D:\orant\BIN\RWRBE60.exe)(HOST=XXXXXXXXX-CTX02)(USER=kishor.kumar))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.35)(PORT=4395)) * establish * orcl * 12500
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 233: Unknown error
The errors in the alert log files are given below:
Wed Sep 16 11:05:23 2009
ARC1: Evaluating archive thread 2 sequence 11010
Committing creation of archivelog 'D:\ARCHIVE\ARC11010_0650724155.002'
Wed Sep 16 11:11:35 2009
skgpspawn failed:category = 27143, depinfo = 997, op = spcdr:9261:4200, loc = skgpspawn
Wed Sep 16 11:11:35 2009
kkjcre1p: unable to spawn jobq slave process
Wed Sep 16 11:11:35 2009
Errors in file d:\oracle\product\10.1.0\admin\orcl\bdump\orcl2_cjq0_2440.trc:
Wed Sep 16 11:19:35 2009
skgpspawn failed:category = 27143, depinfo = 997, op = spcdr:9261:4200, loc = skgpspawn
Wed Sep 16 11:19:35 2009
kkjcre1p: unable to spawn jobq slave process
Wed Sep 16 11:19:35 2009
Errors in file d:\oracle\product\10.1.0\admin\orcl\bdump\orcl2_cjq0_2440.trc:
Wed Sep 16 11:47:35 2009
skgpspawn failed:category = 27143, depinfo = 997, op = spcdr:9261:4200, loc = skgpspawn
Wed Sep 16 11:47:35 2009
kkjcre1p: unable to spawn jobq slave process
Wed Sep 16 11:47:35 2009
Errors in file d:\oracle\product\10.1.0\admin\orcl\bdump\orcl2_cjq0_2440.trc:
I suspect this listener is getting down frequently due to out of memory in the server, but i don't see any error's in alert log file stating out of memory.
Pls share your views on this scenario.
Thanks
Regards
Hari
Edited by: hariharan.thyagarajan on Sep 16, 2009 2:42 PM

hariharan.thyagarajan wrote:
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 233: Unknown errorNot too familiar with how Oracle's processing architecture works on Windows - never used Oracle really on Windows. I suspect that the Listener will call something like +[CreateThread()|http://msdn.microsoft.com/en-us/library/ms682453(VS.85).aspx]+ (or CreateRemoteThread() ) to start a dedicated server process.
This calls fails. The reason for the underlaying (root cause) Win32 error you're seeing.
This can fail for a number of reasons.. the most likeliest being insufficient resources (memory specifically) being available for that thread to be created.
The MSDN article I've linked to above says:
>
The number of threads a process can create is limited by the available virtual memory. By default, every thread has one megabyte of stack space. Therefore, you can create at most 2,048 threads. If you reduce the default stack size, you can create more threads. However, your application will have better performance if you create one thread per processor and build queues of requests for which the application maintains the context information. A thread would process all requests in a queue before processing requests in the next queue
>
Of course, this assumption is that the CreateThread() call is used. Oracle could be using fibres or some other Win32 call.. but in principle, that call is failing and is why you are seeing this error.
Oracle supports shared server process architecture on Win32 too. This should (I suspect) reduce the memory footprint of server threads. You may want to investigate this option.

Listener getting down in every 5-6 hrs

Hi Frends,
Our database listener is getting down in 5-6 hrs from last 3 days. On this database, we run batch files which continueosly upload data using SQL loader. Our environment detail is as follos:
Database : Version 10.2.0.2.0
OS : Linux
In listener log it throws below errors :
TNS-12518: TNS:listener could not hand off client connection
Regards,
Umesh

Hi Pavan, please find the details as below:
1.Try to check whether are you using dedicated or shared server. ?
--> Its a dedicated server
Try to check the listener services - you can check number of refused connections.-- >
oracle@btc:/btc> lsnrctl services
LSNRCTL for Linux: Version 10.2.0.2.0 - Production on 12-APR-2011 13:33:31
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM", status BLOCKED, has 1 handler(s) for this service...
 Handler(s):
 "DEDICATED" established:0 refused:0 state:ready
 LOCAL SERVER
Service "+ASM_XPT" has 1 instance(s).
Instance "+ASM", status BLOCKED, has 1 handler(s) for this service...
 Handler(s):
 "DEDICATED" established:0 refused:0 state:ready
 LOCAL SERVER
Service "btc.ind.com" has 1 instance(s).
Instance "btc", status READY, has 1 handler(s) for this service...
 Handler(s):
 "DEDICATED" established:64665 refused:13 state:ready
 LOCAL SERVER
Service "btcXDB.ind.com" has 1 instance(s).
Instance "btc", status READY, has 1 handler(s) for this service...
 Handler(s):
 "D000" established:0 refused:0 current:0 max:1022 state:ready
 DISPATCHER <machine: btc, pid: 7683>
 (ADDRESS=(PROTOCOL=tcp)(HOST=btc.ind.com)(PORT=19662))
Service "btc_XPT.ind.com" has 1 instance(s).
Instance "btc", status READY, has 1 handler(s) for this service...
 Handler(s):
 "DEDICATED" established:64665 refused:13 state:ready
 LOCAL SERVER
The command completed successfully
If you are working with dedicated server then try to increase the process paramter value since it might not be sufficient/could not able to handle the connections and monitor listener.log for issues.--> Process parameter has been set to 2000 and running processes and session is as follows:
SQL> select count(*) from v$session;
COUNT(*)
37
SQL> select count(*) from v$process;
COUNT(*)
40
Regards,
Umesh

Hi...Please help...Getting ORA 12154 TNS Listener could not resolve...

Hi,
I have just loaded Oracle 10g Rel 2 in Win 2003 Enterprise Edition.
But when I try to connect to sqlplus, I am getting ORA -12154 : TNS: Listener could not resolve the connect identified specified.
I have registered the database, the listener and tnsnames have been set correctly.
I have also set the Oracle Home environment variable.
Still getting the error.
Any help will be highly appreciated.
Thanks,

I agree
ORA-12145: (does not exist in the standard manuals)
ORA-12154: TNS:could not resolve the connect identifier specified
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
ORA-12541: TNS:no listener
It is pretty easy to fat-finger these 4 message numbers. As a result, when a person has the actual and complete error message and an error number for a different message, it is usually not a bad idea to use the actual message. (Based on transposing only 3 digits compared to typing over 50 characters correctly.)
In this case the OP has really bollixed things: Subject implies a true 12154, text in the thread is an actual 12514 but mentions 12154.
As a result, there are several potentially correct answers, depending on the interpretation of the question.
- sb92075 gave the correct answer based on the number
- I gave the correct answer based on the message in the thread
- Anurag and Ed gave the correct answer based on 'the question is not formed correctly'
Edited by: Hans Forbrich on Jan 24, 2010 7:13 AM
(BTW - ORA-12415 and ORA-12451 are the other permutations ... described http://download.oracle.com/docs/cd/B19306_01/server.102/b14219/e12400.htm#sthref3357)

Get error ORA-12500 : TNS Listener

I keep getting this ORA-12500 ODBC error, TNS listener could not be resolved.
What does it mean?
What is causing it?
The error comes and goes by itself within a few seconds.
Any help is appreciated.
Thanks.

I'm using Oracle 8i (8.1.6)

TNS Listener -ORA-12514 error following database shutdown - Oracle 11g

Hi
I have hit a problem with my oracle development database.
When in sqlplus I executed the shutdown command, but nothing happened for several minutes and it was just hanging. No messages were displayed to the screen. The only thing was to close the command window. When I open sqlplus again and enter in the user name password as sysdba I am getting ORA 12514 TNS Listener could not resolve service in descriptor. This is odd as I could log on before and use the database. So I thought that the services were still shutting down I waited, and using the Windows snap on tool for Oracle 11g, I restarted the services on the database, but this has had no effect.
Even using EM made no difference because I couldn't log on to perform a startup or recovery.
So, please does anyone know how I can fix this?
Thanks

user633278 wrote:
Hi
I have hit a problem with my oracle development database.
When in sqlplus I executed the shutdown command, but nothing happened for several minutes and it was just hanging. No messages were displayed to the screen. The only thing was to close the command window. When I open sqlplus again and enter in the user name password as sysdba I am getting ORA 12514 TNS Listener could not resolve service in descriptor. This is odd as I could log on before and use the database. So I thought that the services were still shutting down I waited, and using the Windows snap on tool for Oracle 11g, I restarted the services on the database, but this has had no effect.
Even using EM made no difference because I couldn't log on to perform a startup or recovery.
So, please does anyone know how I can fix this?
open Command Window & do EXACTLY as below; line for line
sqlplus
/ as sysdba
shutdown abort
startup
exit
COPY command & results from above then PASTE all back here

EM12c Oracle Database Plug-In 12.1.0.7 update now shows 10g listener as down when it's not

EM 12.1.0.4 with Oracle Database Plug-in 12.1.0.7
Monitored database and listener: 10.2.0.4
Our EM12c monitors 12.1,11.2 and 10.2 databases and listeners. All monitored targets are up and running.
I updated Oracle Database Plug-in from 12.1.0.6 to 12.1.0.7 and now the only 10g listener that I have shows as down.
The listener on the server is up and running.
The monitoring configuration is right.
I removed this target and re-added it, but it came back as down.
It's a little disconcerting to have a listener show as down since it's a production box, but nothing I do corrects the problem.
Any insights or suggestions are appreciated.
Sherrie

Hi Sherrie,
In most cases we have this issue due to monitoring configuration , I know you mentioned that you have checked on it but still I would recommend to just re-confirm on below steps
1. Go to
 EM Console -> Targets -> Listener -> Listener Home page -> Target Setup -> Monitoring Configuration
2. Get the details
 Listener Name
 Listener.ora Directory
 Machine Name
 Oracle Home
 TCP Port Numbe
3. Go to the server where this listener is running
 Check to see if the listener is up
 ps -ef | grep tns
4. Next run
 $ORACLE_HOME/bin/lsnrctl status
 From this outpuy verify details in (1)
 Listener Name <======= Alias
 Listener.ora Directory <=== Listener Parameter File ie the directory
 Machine Name <======= HOST=
 Oracle Home<========== This is where tnslsnr is started from
 TCP Port Number <====== PORT=
5. Makes sure that all the details matches in (4) and (2)
If above is fine then I would recommend to go through the troubleshooting steps as per below doc , they are valid for listener status down too and should give a further insight on the root cause of the issue
Troubleshooting the 'Pending' status for a Listener Target in Enterprise Manager 12c Cloud Control (Doc ID 1546576.1)
Regards,
Rahul

Tns listener with 10g grid control

i have a primary database on site A and a standby database on site B. yesterday the relationship between the 2 was alright with logs being shipped and applied. now my standby is down(probably due to a power failure) and each time i try to start it up i get the following:
Error: ORA-12505: TNS:listener does not currently know of SID given in connect descriptor
This is oracle database 10g rel2 and grid control 10g rel2 sitting on windows xp. I have checked all the listener.ora and tnsnames.ora and do not seem to find anything amiss.
what i need to know is:
1 - are there any issues relating to installing rel2 on win xp?
2 - when enterprise manager looks at the listener, is it the listener on the server with the primary or standby database?
3 - has anybody ever had this issue, if so, what was the resolution?
sincerely
simba

1 There are no more issues compared to other platforms
2 It looks at the listener on the host you specify in tnsnames.ora
3 Look: it is quite simple: too many people post here about common errors they can't seem to resolve themselves, because they don't use already available resources. If you would have simply searched this forum for ora-12505 you would already have read the solution.
Typically, there is no need to ask around whether someone already ran into this. You are not unique, you are not the only one with this problem, and there are FAQs.
ORA-12505 simply means in your tnsnames.ora you are using a SID which doesn't occur in listener.ora
And you would have known this if you would have simply looked up the error in the online documentation. But alas: most people around here never use the documentation, though the Forums Etiquette post (also no one reads) recommends otherwise.
Sybrand Bakker
Senior Oracle DBA

Oracle 10g TNS listener service

Hi Friends,
I have installed Oracle 10g in my windows
vista. When i try to start TNS listener through services window
manually, it is giving the below error.
"windows could not start the OracleOraDb10g_home1TNSListener service
on Local Computer.
Error 3: The System cannot find the path specified"
If you have an idea about this please help me out. I need to solve it
immediately. Please respond for this as early as possible.
Thanks,
Surendra Kumar

sridhar yerram wrote:
My listner.ora contents are as follows :
# listener.ora Network Configuration File: D:\oracle\product\10.1.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\oracle\product\10.1.0\db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
My tnsnames.ora file as follows ;
# tnsnames.ora Network Configuration File: D:\oracle\product\10.1.0\db_1\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
I was getting the following error when iam connecting using my tns name : scott/tiger@ORCL
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
all services for oracle are started , in services.msc i started all the services of oracle.
May i know exactly what are the services necessary to run the oracle 10g
regards
sridharWhy are you reviving a thread that has been dormant for 18 months and had nothing that looked at all like your problem?
Anyway ...
First, Is your client (from which you are running sqlplus) on the same machine as the database? If not, it will never connect as 'localhost' is a non-routable address.
Second, which version of windows is your database on?
Third, we see what your listener and tnsnames files look like, but that's not the whole story. Show us the results of :
c:> lsnrctl status(Use copy and paste to show us the full command and response from a command prompt)
Fourth, read my standard explanation and see if it leads you to any clues.
=================================
A couple of important points.
First, the listener is a server side only process. It's entire purpose in life is to receive requests for connections to databases and set up those connections. Once the connection is established, the listener is out of the picture. It creates the connection. It doesn't sustain the connection. One listener, with the default name of LISTENER, running from one oracle home, listening on a single port, will serve multiple database instances of multiple versions running from multiple homes. It is an unnecessary complexity to try to have multiple listeners or to name the listener as if it belongs to a particular database. That would be like the telephone company building a separate switchboard for each customer.
Second, the tnsnames.ora file is a client side issue. It's purpose is for address resolution - the tns equivalent of the 'hosts' file further down the network stack. The only reason it exists on a host machine is because that machine can also run client processes.
Assume you have the following in your tnsnames.ora:
larry =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = myhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = curley)
)Now, when you issue a connect, say like this:
$> sqlplus scott/tiger@larrytns will look in your tnsnames.ora for an entry called 'larry'. Next, tns sends a request to (PORT = 1521) on (HOST = myhost) using (PROTOCOL = TCP), asking for a connection to (SERVICE_NAME = curley).
Where is (HOST = myhost) on the network? When the request gets passed from tns to the next layer in the network stack, the name 'myhost' will get resolved to an IP address, either via a local 'hosts' file, via DNS, or possibly other less used mechanisms. You can also hard-code the ip address (HOST = 123.456.789.101) in the tnsnames.ora.
Next, the request arrives at port 1521 on myhost. Hopefully, there is a listener on myhost configured to listen on port 1521, and that listener knows about SERVICE_NAME = curley. If so, you'll be connected.
What can go wrong?
First, there may not be an entry for 'larry' in your tnsnames. In that case you get "ORA-12154: TNS:could not resolve the connect identifier specified" No need to go looking for a problem on the host, with the listener, etc. If you can't place a telephone call because you don't know the number (can't find your telephone directory (tnsnames.ora) or can't find the party you are looking for listed in it (no entry for larry)) you don't look for problems at the telephone switchboard.
Maybe the entry for larry was found, but myhost couldn't be resolved to an IP address (say there was no entry for myhost in the local hosts file). This will result in "ORA-12545: Connect failed because target host or object does not exist"
Maybe there was an entry for myserver in the local hosts file, but it specified a bad IP address. This will result in "ORA-12545: Connect failed because target host or object does not exist"
Maybe the IP was good, but there is no listener running: "ORA-12541: TNS:no listener"
Maybe the IP was good, there is a listener at myhost, but it is listening on a different port. "ORA-12560: TNS:protocol adapter error"
Maybe the IP was good, there is a listener at myhost, it is listening on the specified port, but doesn't know about SERVICE_NAME = curley. "ORA-12514: TNS:listener does not currently know of service requested in connect descriptor"
=====================================

TNS:listener does not currently know of service requested in connect

[Oracle 10g 10.1.0.2] TNS:listener does not currently know of service requested in connect
hi,
My system is Windows XP.
Oracle 10g : 10.1.0.2.0
I can connect through sqlplus (and toad) with the following command:
sqlplus scott/tiger /
but I cannot connect with this: sqlplus scott/tiger@localhost:1521:cambridg
I am trying to connect to my database cambridg on my computer (named eclipse).
Where is the problem ? Can anyone help me here ?
This is my tnsnames.ora
# tnsnames.ora Network Configuration File: c:\oracle\product\10.1.0\Db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
CAMBRIDG =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = ECLIPSE)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = cambridg)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
And my listener.ora :
# listener.ora Network Configuration File: c:\oracle\product\10.1.0\Db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = c:\oracle\product\10.1.0\Db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = ECLIPSE)(PORT = 1521))
A tnsping works perfect :
C:\bob>tnsping cambridg
TNS Ping Utility for 32-bit Windows: Version 10.1.0.2.0 - Production on 30-JUIL.
-2005 14:46:11
Copyright (c) 1997, 2003, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = ECLIPSE)
(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = cambridg)))
OK (20 msec)
I get the following message:
C:\>sqlplus scott/tiger@localhost:1521:cambridg
SQL*Plus: Release 10.1.0.2.0 - Production on Sam. Juil. 30 15:10:58 2005
Copyright (c) 1982, 2004, Oracle. All rights reserved.
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
Also, in the services running, I can see that the listener is started and running:
OracleOraDb10g_home1TNSListener
Maybe it has something to do with the other listener, that I cannot start:
OracleOraDb10g_home1TNSListenerSID_LIST_LISTENER
Any help would be much appreciated as I am currently stucked with that.
Thanks a lot

Muhammad Nadeem wrote:
hi all,
I have the following error when try to connect the database thru form developer:
TNS:listener does not currently know of service requested in connect descriptor
any one have the solution?
Regards:
mn=================================
A couple of important points.
First, the listener is a server side only process. It's entire purpose in life is to receive requests for connections to databases and set up those connections. Once the connection is established, the listener is out of the picture. It creates the connection. It doesn't sustain the connection. One listener, with the default name of LISTENER, running from one oracle home, listening on a single port, will serve multiple database instances of multiple versions running from multiple homes. It is an unnecessary complexity to try to have multiple listeners or to name the listener as if it belongs to a particular database. That would be like the telephone company building a separate switchboard for each customer.
Additional notes on the listener: One listener is capable of listening on multiple ports. But please notice that it is the listener using these ports, not the database instance. You can't bind a specific listener port to a specific db instance. Similarly, one listener is capable of listnening on multiple IP addresses (in the case of a server with multiple NICs) But just like the port, you can't bind a specific ip address to a specific db instance.
Second, the tnsnames.ora file is a client side issue. It's purpose is for address resolution - the tns equivalent of the 'hosts' file further down the network stack. The only reason it exists on a host machine is because that machine can also run client processes.
Assume you have the following in your tnsnames.ora:
larry =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = myhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = curley)
)Now, when you issue a connect, say like this:
$> sqlplus scott/tiger@larrytns will look in your tnsnames.ora for an entry called 'larry'. Finding it, tns sends a request through the normal network stack to (PORT = 1521) on (HOST = myhost) using (PROTOCOL = TCP), asking for a connection to (SERVICE_NAME = curley).
Where is (HOST = myhost) on the network? When the request gets passed from tns to the next layer in the network stack, the name 'myhost' will get resolved to an IP address, either via a local 'hosts' file, via DNS, or possibly other less used mechanisms. You can also hard-code the ip address (HOST = 123.456.789.101) in the tnsnames.ora.
Next, the standard networking process delivers the message to port 1521 on myhost. Hopefully, there is a listener on myhost configured to listen on port 1521, and that listener knows about SERVICE_NAME = curley. If so, the listener will spawn a server process to act as the intermediary between your client and the database instance. Communication to the server process will be on a randomly selected available port. At that point the listener is out of the process and continues to user port 1521 to await other connection requests.
What can go wrong?
First, there may not be an entry for 'larry' in your tnsnames. In that case you get "ORA-12154: TNS:could not resolve the connect identifier specified" No need to go looking for a problem on the host, with the listener, etc. If you can't place a telephone call because you don't know the number (can't find your telephone directory (tnsnames.ora) or can't find the party you are looking for listed in it (no entry for larry)) you don't look for problems at the telephone switchboard.
Maybe the entry for larry was found, but myhost couldn't be resolved to an IP address (say there was no entry for myhost in the local hosts file). This will result in "ORA-12545: Connect failed because target host or object does not exist"
Maybe there was an entry for myserver in the local hosts file, but it specified a bad IP address. This will result in "ORA-12545: Connect failed because target host or object does not exist"
Maybe the IP was good, but there is no listener running: "ORA-12541: TNS:no listener"
Maybe the IP was good, there is a listener at myhost, but it is listening on a different port. "ORA-12560: TNS:protocol adapter error"
Maybe the IP was good, there is a listener at myhost, it is listening on the specified port, but doesn't know about SERVICE_NAME = curley. "ORA-12514: TNS:listener does not currently know of service requested in connect descriptor"
Third: If the client is on the same machine as the db instance, it is possible to connect without referencing tnsnames and without going through the listener.
Now, when you issue a connect, say like this:
$> sqlplus scott/tigertns will attempt to establish an IPC connection to the db instance. How does it know the name of the instance? It uses the current value of the enviornment variable ORACLE_SID. So...
$> export ORACLE_SID=fred
$> sqlplus scott/tigerIt will attempt to connect to the instance known as "fred". If there is no such instance, it will, of course, fail. Also, if there is no value set for ORACLE_SID, the connect will fail.
check executing instances to get the SID
[oracle@vmlnx01 ~]$ ps -ef|grep pmon|grep -v grep
oracle    4236     1 0 10:30 ?        00:00:00 ora_pmon_vlnxora1set ORACLE_SID appropriately, and connect
[oracle@vmlnx01 ~]$ export ORACLE_SID='vlnxora1
[oracle@vmlnx01 ~]$ sqlplus scott/tiger
SQL*Plus: Release 10.2.0.4.0 - Production on Wed Sep 22 10:42:37 2010
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing optionsNow set ORACLE_SID to a bogus value, and try to connect
SQL> exit
[oracle@vmlnx01 ~]$ export ORACLE_SID=FUBAR
[oracle@vmlnx01 ~]$ sqlplus scott/tiger
SQL*Plus: Release 10.2.0.4.0 - Production on Wed Sep 22 10:42:57 2010
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Enter user-name: Now set ORACLE_SID to null, and try to connect
[oracle@vmlnx01 ~]$ export ORACLE_SID=
[oracle@vmlnx01 ~]$ sqlplus /scott/tiger
SQL*Plus: Release 10.2.0.4.0 - Production on Wed Sep 22 10:43:24 2010
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
ERROR:
ORA-12162: TNS:net service name is incorrectly specifiedOk, that is how we get from the client connection request to the listener. What about the listener's part of all this?
The listener is very simple. It's job is to listen for connection requests and make the connection (server process) between the client and the database instance. Once that connection is made, the listener is out of the picture. If you were to kill the listener, all existing connections would continue. The listener is configured with the listener.ora file, but if that file doesn't exist, the listener is quite capable of starting up with all default values. One common mistake with the listner configuration is to specify "HOST=localhost" or "HOST=127.0.01". This is a NONROUTABLE ip address. LOCALHOST and ip address 127.0.0.1 always mean "this machine on which I am sitting". So, all computers are known as "localhost" or "127.0.0.1". If you specify this address, the listener will only be capable of receiving requests from the machine on which it is running. If you specified that address in your tnsnames file - on a remote client machine - the request would be routed to the machine on which the requesting client resides. Probably not what you want.
=====================================

Switchover using dgmgrl throwing ORA-12514: TNS:listener does not

Hi,
oracle version : 11.1.0.7
os : sun soalris
i am able to switchover the roles of primary and standby but i am getting this error
DGMGRL> switchover to qecgpoca;
Performing switchover NOW, please wait...
New primary database "qecgpoca" is opening...
Operation requires shutdown of instance "qecgpoce" on database "qecgpoce"
Shutting down instance "qecgpoce"...
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
Operation requires startup of instance "qecgpoce" on database "qecgpoce"
Starting instance "qecgpoce"...
Unable to connect to database
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
Failed.
You are no longer connected to ORACLE
Please connect again.
Unable to start instance "qecgpoce"
You must start instance "qecgpoce" manually
Switchover succeeded, new primary is "qecgpoca"i have set db_unique_name_DGMGRL for listener still i am getting
appreciated any inputs..
Thanks
Prakash

Review the basics:
1. ORACLE_HOME
2. ORACLE_SID
3. ping
4. tnsping
5. the docs

OEM 10g - ORA-12505: TNS:listener does not currently know of SID...

Hello,
In OEM (version 10.1.0.5 on Red Hat linux 4), on the page Database Instance: dbexemple.domain.be
It says:
- Database Instance > up
- Listener > up
- Agent connection to database > Status: Failed
Details: Failed to connect to database instance: ORA-12505: TNS:listener does not currently know of SID given in connect descriptor (DBD ERROR: OCIServerAttach).
And my OEM database is always in Blackout state.
I can connect on the database and if I select from global_name it gives me the good name.
If I do lsnrctl status
Service "dbexemple.domain.be" has 1 instance(s).
Instance "emrep", status READY, has 1 handler(s) for this service...
If I do lsnrctl services
Service "dbexemple.domain.be" has 1 instance(s).
Instance "dbexemple", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:44 refused:0 state:ready
LOCAL SERVER
So all looks normal. But my DB is still in blackout state.
I did stop and start the agent > no change
I did shutdown and start the database > no change
I did stop the agent delete the $oracle_home/sysmen/emd/... files and start the agent and emctl upload... > no change
In the targets.xml file from the agent I have:
<Target TYPE="oracle_database" NAME="dbexemple.domain.be">
<Property NAME="OracleHome" VALUE="/oracle/product/db10g"/>
<Property NAME="UserName" VALUE="###" ENCRYPTED="TRUE"/>
<Property NAME="MachineName" VALUE="machine.domain.be"/>
<Property NAME="Port" VALUE="1521"/>
<Property NAME="SID" VALUE="dbexemple"/>
<Property NAME="ServiceName" VALUE="dbexemple.domain.be"/>
<Property NAME="password" VALUE="###" ENCRYPTED="TRUE"/>
</Target>
Seems good also
My tnsnames.ora
DBEXEMPLE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = machine.domain.be)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = dbexemple.domain.be)
tnsping dbexemple is also good:
Used LDAP adapter to resolve the alias
Attempting to contact (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=machine)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=dbexemple.domain.be)))
OK (10 msec)
The DB is not in the listener.ora but anyway at the startup of the database the database register in the listener (can take some seconds).
In OEM if I look at blackout, it says no blackout exists
So after all these verifications my OEM database is still in blackout status and remain in blackout.
I would like to find the reason why it stays like this and the agent finally stop giving me an error.
thank you for your help,
Loïc

The fact is that I did not set any blackout for the emrep database. (no blackout are set at the moment in fact)
So, we did change the HDD of the computer were was OEM to another HDD.
The update to 10.1.0.5 was made before all this (2 weeks) and no problem appears after that.
There's no blackout in OEM Blackouts:
No Blackouts found.
and no blackout with emctl:
[oracle@computeroem bin]$ ./emctl status blackout
Oracle Enterprise Manager 10g Release 10.2.0.1.0.
Copyright (c) 1996, 2005 Oracle Corporation. All rights reserved.
No Blackout registered.
[oracle@computeroem bin]$ ./emctl status blackout emrep
Oracle Enterprise Manager 10g Release 10.2.0.1.0.
Copyright (c) 1996, 2005 Oracle Corporation. All rights reserved.
No Blackout registered.
At the link:
http://computeroem.domain.be:4889/em/console/health/healthSystemError
I get these:
Loader
https://computeroem.domain.be:3872/emd/main/
14-Jan-2007 10:32:32 PM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ java.sql.SQLException: ORA-20615: Severity received during blackout for : Target up received during blackout for : (target_guid = E9A00D9D6447DF4BE1CF43F7A94BF402) (policy_guid=3BF84446B273FE1F5743FD6293C7E192) (key_value= ) (collection_ts = 2007-01-14 22:32:27) (violation_level =CLEAR) ORA-06512: at "SYSMAN.EM_VIOLATION_CHECKS", line 959 ORA-04088: error during execution of trigger 'SYSMAN.EM_VIOLATION_CHECKS' Error occured at line : 277, File name:Severity
Loader
https://computeroem.domain.be:3872/emd/main/
14-Jan-2007 10:32:32 PM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ Loaded B0000000003.xml with errors; moving to errors directory, File name:/oracle2/product/oms10g/sysman/recv/B0000000003.xml
Blackouts
n/a
14-Jan-2007 6:19:26 PM
Error
Duplicate start blackout record for 39EDA0C7E44C422698958F9463393C52 for target E9A00D9D6447DF4BE1CF43F7A94BF402
Loader
https://computeroem.domain.be:3872/emd/main/
12-Jan-2007 3:07:22 PM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ java.sql.SQLException: ORA-20615: Severity received during blackout for : Target up received during blackout for : (target_guid = E9A00D9D6447DF4BE1CF43F7A94BF402) (policy_guid=3BF84446B273FE1F5743FD6293C7E192) (key_value= ) (collection_ts = 2007-01-12 15:07:05) (violation_level =CLEAR) ORA-06512: at "SYSMAN.EM_VIOLATION_CHECKS", line 959 ORA-04088: error during execution of trigger 'SYSMAN.EM_VIOLATION_CHECKS' Error occured at line : 14, File name:Severity
Loader
https://computeroem.domain.be:3872/emd/main/
12-Jan-2007 3:07:22 PM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ Loaded B0000000002.xml with errors; moving to errors directory, File name:/oracle2/product/oms10g/sysman/recv/B0000000002.xml
Loader
https://computeroem.domain.be:3872/emd/main/
12-Jan-2007 3:04:44 PM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ java.sql.SQLException: ORA-20615: Severity received during blackout for : Target down received during blackout for : (target_guid = E9A00D9D6447DF4BE1CF43F7A94BF402) (policy_guid=3BF84446B273FE1F5743FD6293C7E192) (key_value= ) (collection_ts= 2007-01-12 14:56:52) (violation_level =CRITICAL) ORA-06512: at "SYSMAN.EM_VIOLATION_CHECKS", line 818 ORA-04088: error during execution of trigger 'SYSMAN.EM_VIOLATION_CHECKS' Error occured at line : 14, File name:Severity
Loader
https://computeroem.domain.be:3872/emd/main/
12-Jan-2007 3:04:44 PM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ Loaded B0000000001.xml with errors; moving to errors directory, File name:/oracle2/product/oms10g/sysman/recv/B0000000001.xml
Blackouts
n/a
12-Jan-2007 10:10:23 AM
Error
end_blackout: unexpected current state 10
Blackouts
n/a
12-Jan-2007
10:05:28 AM
Error
Duplicate start blackout record for FD1380AAEB69BAE53339F58EA0C83ADC for target E9A00D9D6447DF4BE1CF43F7A94BF402
Loader
https://computeroem.domain.be:3872/emd/main/
12-Jan-2007 9:57:16 AM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ Loaded B0000000001.xml with errors; moving to errors directory, File name:/oracle2/product/oms10g/sysman/recv/B0000000001.xml
Loader https://computeroem.domain.be:3872/emd/main/
12-Jan-2007 9:57:15 AM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ java.sql.SQLException: ORA-20615: Severity received during blackout for : Target up received during blackout for : (target_guid = E9A00D9D6447DF4BE1CF43F7A94BF402) (policy_guid=3BF84446B273FE1F5743FD6293C7E192) (key_value= ) (collection_ts = 2007-01-12 09:56:53) (violation_level =CLEAR) ORA-06512: at "SYSMAN.EM_VIOLATION_CHECKS", line 959 ORA-04088: error during execution of trigger 'SYSMAN.EM_VIOLATION_CHECKS' Error occured at line : 270, File name:Severity
Loader
https://computeroem.domain.be:3872/emd/main/
8-Jan-2007 9:07:17 AM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ java.sql.SQLException: ORA-20615: Severity received during blackout for : Target up received during blackout for : (target_guid = E9A00D9D6447DF4BE1CF43F7A94BF402) (policy_guid=3BF84446B273FE1F5743FD6293C7E192) (key_value= ) (collection_ts = 2007-01-08 09:07:02) (violation_level =CLEAR) ORA-06512: at "SYSMAN.EM_VIOLATION_CHECKS", line 959 ORA-04088: error during execution of trigger 'SYSMAN.EM_VIOLATION_CHECKS' Error occured at line : 25, File name:Severity
Loader
https://computeroem.domain.be:3872/emd/main/
8-Jan-2007 9:07:17 AM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ Loaded B0000000003.xml with errors; moving to errors directory, File name:/oracle2/product/oms10g/sysman/recv/B0000000003.xml
Loader
https://computeroem.domain.be:3872/emd/main/
8-Jan-2007 9:04:10 AM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ Loaded B0000000002.xml with errors; moving to errors directory, File name:/oracle2/product/oms10g/sysman/recv/B0000000002.xml
Loader
https://computeroem.domain.be:3872/emd/main/
8-Jan-2007 9:04:09 AM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ java.sql.SQLException: ORA-20615: Severity received during blackout for : Target up received during blackout for : (target_guid = E9A00D9D6447DF4BE1CF43F7A94BF402) (policy_guid=3BF84446B273FE1F5743FD6293C7E192) (key_value= ) (collection_ts = 2007-01-08 09:01:54) (violation_level =CLEAR) ORA-06512: at "SYSMAN.EM_VIOLATION_CHECKS", line 959 ORA-04088: error during execution of trigger 'SYSMAN.EM_VIOLATION_CHECKS' Error occured at line : 151, File name:Severity
Blackouts
n/a
8-Jan-2007 8:57:47 AM
Error
Duplicate start blackout record for 39EDA0C7E44C422698958F9463393C52 for target E9A00D9D6447DF4BE1CF43F7A94BF402
Loader
https://computeroem.domain.be:3872/emd/main/
8-Jan-2007 8:56:00 AM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ Loaded B0000000001.xml with errors; moving to errors directory, File name:/oracle2/product/oms10g/sysman/recv/B0000000001.xml
Loader
https://computeroem.domain.be:3872/emd/main/
8-Jan-2007 8:56:00 AM
Error
Thread: SeverityLoad https://computeroem.domain.be:3872/emd/main/ java.sql.SQLException: ORA-20615: Severity received during blackout for : Target down received during blackout for : (target_guid = E9A00D9D6447DF4BE1CF43F7A94BF402) (policy_guid=3BF84446B273FE1F5743FD6293C7E192) (key_value= ) (collection_ts= 2007-01-06 01:25:35) (violation_level =CRITICAL) ORA-06512: at "SYSMAN.EM_VIOLATION_CHECKS", line 818 ORA-04088: error during execution of trigger 'SYSMAN.EM_VIOLATION_CHECKS' Error occured at line : 14, File name:Severity
For the note, mostly I cannot do anything because I have no blackout name for the script. Still reading the note to see if some sql can help.
Message was edited by:
Loic

TNS-12500: TNS:listener failed to start a dedicated server process

Hello all,
I have recently applied a patch on apps tier, after which the concurrent manager is not up & running,
while viewing the internal log
im getting the below error
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to : 25-NOV-2013 13:02:02
Starting AVAILMGR Concurrent Manager : 25-NOV-2013 13:02:02
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager AVAILMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to : 25-NOV-2013 13:02:02
 Process monitor session ended : 25-NOV-2013 13:02:02
========================================================================
Starting test_1125@test Internal Concurrent Manager -- shell process ID 25362
 logfile=/d01/apps/testcomn/admin/log/test_test/test_1125.mgr
 PRINTER=noprint
 mailto=appltest
 restart=N
 diag=N
 sleep=60 (default)
 pmon=20 (default)
 quesiz=1 (default)
Routine &ROUTINE has attempted to start the internal concurrent manager. The ICM is already running. Contact you system administrator for further assistance.afpdlrq received an unsuccessful result from PL/SQL procedure or function FND_DCP.Request_Session_Lock.
Routine FND_DCP.REQUEST_SESSION_LOCK received a result code of 1 from the call to DBMS_LOCK.Request.
Possible DBMS_LOCK.Request resultCall to establish_icm failed
The Internal Concurrent Manager has encountered an error.
Review concurrent manager log file for more detailed information. : 25-NOV-2013 13:03:01 -
Shutting down Internal Concurrent Manager : 25-NOV-2013 13:03:01
List of errors encountered:
_ 1 _
Routine AFPCSQ encountered an ORACLE error. .
Review your error messages for the cause of the error. (=<POINTER>)
List of errors encountered:
_ 1 _
Routine AFPCAL received failure code while parsing or running your
concurrent program CPMGR
Review your concurrent request log file for more detailed information.
Make sure you are passing arguments in the correct format.
The test_1125@test internal concurrent manager has terminated with status 1 - giving up.
WARNING: RunAsUser for MSP ignored, check group ids (egid=501, want=51)
can not chdir(/var/spool/clientmqueue/): Permission denied
Program mode requires special privileges, e.g., root or TrustedUser.
Also in apps tier $TNS_ADMIN
the log says
25-NOV-2013 14:57:51 * ping * 0
25-NOV-2013 14:57:51 * (CONNECT_DATA=(SID=FNDSM)) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.12)(PORT=5147)) * establish * FNDSM * 12500
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
 TNS-00517: Lost contact
 Linux Error: 32: Broken pipe

HI thanks for your reply,
I tried the above guide but dint helped me,
I tried modifiying Concurrent:GSM Enabled to N & concurrent manager started but all requests were in pending state not running so i reverted back to Concurrent:GSM Enabled Y
I ran autoconfig & this is the lastes error I am getting in internal manager log.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:18
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:18
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:18
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:18
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:19
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:19
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:19
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:19
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:19
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:19
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:19
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:19
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:19
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:19
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:20
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:20
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:20
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:20
Could not start Service Manager FNDSM_test_test. The TNS alias could not be located, the listener process on test could not be contacted, or the listener failed to spawn the Service Manager process.
Routine AFPEIM encountered an error while starting concurrent manager FCHMGR with library /d01/apps/testappl/fnd/11.5.0/bin/FNDLIBR.
Check that your system has enough resources to start a concurrent manager process. Contact your system administrator to o : 25-NOV-2013 15:51:20
Starting FCHMGR Concurrent Manager : 25-NOV-2013 15:51:20
The below is the log from $TNS_ADMIN log directory apps_test.ora
25-NOV-2013 16:06:01 * (CONNECT_DATA=(SID=FNDSM)) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.2.30.82)(PORT=13510)) * establish * FNDSM * 12500
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
 TNS-00517: Lost contact
 Linux Error: 32: Broken pipe
25-NOV-2013 16:06:01 * ping * 0
25-NOV-2013 16:06:01 * (CONNECT_DATA=(SID=FNDSM)) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.12)(PORT=13512)) * establish * FNDSM * 12500
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
 TNS-00517: Lost contact
 Linux Error: 32: Broken pipe
25-NOV-2013 16:06:02 * ping * 0
25-NOV-2013 16:06:02 * (CONNECT_DATA=(SID=FNDSM)) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.12)(PORT=13514)) * establish * FNDSM * 12500
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
 TNS-00517: Lost contact
 Linux Error: 32: Broken pipe
25-NOV-2013 16:06:02 * ping * 0
25-NOV-2013 16:06:02 * (CONNECT_DATA=(SID=FNDSM)) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.30)(PORT=13516)) * establish * FNDSM * 12500
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
 TNS-00517: Lost contact
 Linux Error: 32: Broken pipe

ORA-12523: TNS listener Instance error

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.
ORA-12523: TNS:listener could not find instance appropriate for the client conne
ction
Why i get TNS listener error during startup mount

C:\>lsnrctl status
LSNRCTL for 32-bit Windows: Version 9.2.0.5.0 - Production on 25-SEP-2006 11:51:
33
Copyright (c) 1991, 2002, Oracle Corporation. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ORADBbvt)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 9.2.0.5.0 - Produc
tion
Start Date 25-SEP-2006 11:43:55
Uptime 0 days 0 hr. 7 min. 40 sec
Trace Level off
Security OFF
SNMP OFF
Listener Parameter File C:\oracle\ora92\network\admin\listener.ora
Listener Log File C:\oracle\ora92\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ORADBbvt)(PORT=1521)))
Services Summary...
Service "BW" has 1 instance(s).
Instance "BW", status BLOCKED, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

Error TNS: listener does not curnetly jnow of service requested in connect

hello
i get error TNS: listener does not curnetly jnow of service requested in connect descriptor
when i write tnsping ora920 i get
TNS Ping Utility for 32-bit Windows: Version 10.1.0.2.0 - Production on 02-└┬├.
-2010 23:26:55
Copyright (c) 1997, 2003, Oracle. All rights reserved.
Used parameter files:
C:\oracle\product\10.1.0\Client_1\network\admin\sqlnet.ora
TNS-03505: Failed to resolve name
C:\Users\fg>

784633 wrote:
hello
i get error TNS: listener does not curnetly jnow of service requested in connect descriptor
when i write tnsping ora920 i get
TNS Ping Utility for 32-bit Windows: Version 10.1.0.2.0 - Production on 02-└┬├.
-2010 23:26:55
Copyright (c) 1997, 2003, Oracle. All rights reserved.
Used parameter files:
C:\oracle\product\10.1.0\Client_1\network\admin\sqlnet.ora
TNS-03505: Failed to resolve name
That's not the same error you reported in the thread subject ....
A TNS-03505 is very much like a 12154.
=================================
ORA-12154: TNS:could not resolve the connect identifier specified
This error means one thing, and one thing only. The client could not find the specified entry in the tnsnames.ora file being used.
As a follow-on to that statement, remember that when you use a dblink, the database in which the link is defined is acting as a client to the database that is the target of the link. So in this case, the tnsnames.ora file on the host of your source should have an entry for your target db, as defined in the db_link.
And for the umpteenth time ... this error has NOTHING to do with the status of a listener. The connection request never got far enough to reach a listener. If anyone tells you to check a listener in response to ora-12154, they are not paying attention, or do not understand how TNS works. This error is the equivalent of not being able to place a telephone call because you don't know the number of the party you want to reach. You wouldn't debug that situation by going to the other guy's house and testing his telephone, or by going to the phone company and testing the switchboard. And you don't debug a ORA-12154 by checking the listener. If I had a top ten list of "Incredibly Simple Concepts (tm)" that should be burned into the brain of everyone who claims to be an Oracle DBA, it would include "ORA-12154 Has Nothing To Do With The Listener".
=================================
A couple of important points.
First, the listener is a server side only process. It's entire purpose in life is to receive requests for connections to databases and set up those connections. Once the connection is established, the listener is out of the picture. It creates the connection. It doesn't sustain the connection. One listener, with the default name of LISTENER, running from one oracle home, listening on a single port, will serve multiple database instances of multiple versions running from multiple homes. It is an unnecessary complexity to try to have multiple listeners or to name the listener as if it belongs to a particular database. That would be like the telephone company building a separate switchboard for each customer.
Second, the tnsnames.ora file is a client side issue. It's purpose is for address resolution - the tns equivalent of the 'hosts' file further down the network stack. The only reason it exists on a host machine is because that machine can also run client processes.
Assume you have the following in your tnsnames.ora:
larry =
(DESCRIPTION =
 (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(HOST = myhost)(PORT = 1521))
 (CONNECT_DATA =
 (SERVICE_NAME = curley)
)Now, when you issue a connect, say like this:
$> sqlplus scott/tiger@larrytns will look in your tnsnames.ora for an entry called 'larry'. Next, tns sends a request to (PORT = 1521) on (HOST = myhost) using (PROTOCOL = TCP), asking for a connection to (SERVICE_NAME = curley).
Where is (HOST = myhost) on the network? When the request gets passed from tns to the next layer in the network stack, the name 'myhost' will get resolved to an IP address, either via a local 'hosts' file, via DNS, or possibly other less used mechanisms. You can also hard-code the ip address (HOST = 123.456.789.101) in the tnsnames.ora.
Next, the request arrives at port 1521 on myhost. Hopefully, there is a listener on myhost configured to listen on port 1521, and that listener knows about SERVICE_NAME = curley. If so, you'll be connected.
What can go wrong?
First, there may not be an entry for 'larry' in your tnsnames. In that case you get "ORA-12154: TNS:could not resolve the connect identifier specified" No need to go looking for a problem on the host, with the listener, etc. If you can't place a telephone call because you don't know the number (can't find your telephone directory (tnsnames.ora) or can't find the party you are looking for listed in it (no entry for larry)) you don't look for problems at the telephone switchboard.
Maybe the entry for larry was found, but myhost couldn't be resolved to an IP address (say there was no entry for myhost in the local hosts file). This will result in "ORA-12545: Connect failed because target host or object does not exist"
Maybe there was an entry for myserver in the local hosts file, but it specified a bad IP address. This will result in "ORA-12545: Connect failed because target host or object does not exist"
Maybe the IP was good, but there is no listener running: "ORA-12541: TNS:no listener"
Maybe the IP was good, there is a listener at myhost, but it is listening on a different port. "ORA-12560: TNS:protocol adapter error"
Maybe the IP was good, there is a listener at myhost, it is listening on the specified port, but doesn't know about SERVICE_NAME = curley. "ORA-12514: TNS:listener does not currently know of service requested in connect descriptor"
=====================================
C:\Users\fg>

TNS listener getting down

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