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

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Listener getting down frequentky

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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
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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
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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
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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
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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.

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user12119634(bobs) wrote:
Hi all,
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