Oracle listens on a second randomly selected port
Hello everybody,
Could someone, please, help me to understand what's going on with my oracle 9.2 db running on Linux.
In addition to known and well defined TCP/IP port 1521 listener uses my oracle also starts listening on some other randomly chosen by itself TCP/IP port.
Let's say right now it listens on port 32039 while during the previous restart it listened on 5389 and etc.
Each oracle db restart (I use dbstart / dbshut cycle) gives me a unique line after "netstat -tanp | grep -e LISTEN" execution:
tcp 0 0 0.0.0.0:32039 0.0.0.0:* LISTEN 2793/ora_d000_db891
tcp 0 0 0.0.0.0:1521 0.0.0.0:* LISTEN 2820/tnslsnr
I can stop listener but that random port will be still there... it makes me nervous.
I asked this question at Oracle-Linux forum and one of the linux experts kindly suggested me to rise this issue over here as well after reporting that he has the same strange listening "creature" within his own oracle db box.
Thank you very much for your help
jeff
That is the way Oracle operates.
For dedicated server operations, the initial connection request is done to the listener. The listener 'spawns' a server process for the connection request. That server process finds a new port and the connection request is turned into a full connection on that new port. The listener is then no longer involved with the connection.
The d000_ is the shared server's dispatcher. It gets a port when the database decides a dispatcher is required, and connection requests are then transferred to an available dispatcher. There can be many dispatchers.
In some cases (such as the XML-related service, used since Oracle8i and prevelant in XE) the dispatcher is pinned to a specific port to support a specific service.
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Port of the TNS Listener for the second SAP system
Hello!
I had problems during the installation of the second SAP system with second Oracle DB on the same host (OP is SOLARIS).
The error occurs was faced with TNS Listener.
(> error: TNS Listener is started)
Which settings are applied for the TNS Listener per default in SAPINST?
(e.g. on the same port)
Which settings should I apply in SAPINST for TNS Listener, e.g. configure an another port?
Thank you very much!
regards
ThomHello!
Thank you very much!
Even that is the question.
1) If I have selected "ok" during the installation and no further values selected, will SAPINST check whether the Port 1527 is allocated by the first SAP System and create the second Port 1528?
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Thom -
Trying to change Oracle listener port 1521 to nodefault port on Oracle RAC
Could somebody please help me in the process of changing teh Oracle listener port 1521 to a non-default port on an Oracle RAC environment. I am total of four instance.
Regards.Please read carefully about LOCAL_LISTENER parameter, you shouldn't put there just hostname....
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Oracle 11g:Query to return only 1 to 1 relationship & random selection
Hi
I have a complex query to modify but I have below the sample tables and data with only very few fields(only affected fields).
Query based on 2 tables b_test and s_test.
Pls see below.
create table b_test(building_id number not null,invalid varchar2(1));
create table s_test(sub_building_id number not null,building_id number ,invalid varchar2(1),sequence_no number);
insert into b_test values (1000,'N');
insert into b_test values(2000,'N');
insert into b_test values(3000,'N');
commit;
insert into s_test values(1,1000,'N',90);
insert into s_test values(2,1000,'N',91);
insert into s_test values(3,1000,'N',92);
insert into s_test values(4,1000,'Y',93);
insert into s_test values(5,NULL,'N',NULL);
insert into s_test values(1,2000,'N',94);
insert into s_test values(2,2000,'N',95);
insert into s_test values(3,2000,'N',96);
insert into s_test values(4,2000,'N',97);
insert into s_test values(5,2000,'N',98);
insert into s_test values(6,NULL,'N',NULL);
insert into s_test values(10,3000,'N',99);
insert into s_test values(11,3000,'N',100);
commit;The query below returns all rows required:(also see results:)
select b.building_id,b.invalid,s.sub_building_id,s.sequence_no from b_test b,
(select * from s_test where invalid='N') s
where b.building_id = s.building_id(+)
and b.invalid='N'
Results:
BUILDING_ID INVALID SUB_BUILDING_ID SEQUENCE_NO
1000 N 1 90
1000 N 2 91
1000 N 3 92
2000 N 1 94
2000 N 2 95
2000 N 3 96
2000 N 4 97
2000 N 5 98
3000 N 10 99
3000 N 11 100Now there are 2 requirements:
1)How can the above query be changed so that 1:1 relationship if sub_building_id is returned?i.e For 1 building_id, only show 1 sub_building(This could be a random selection)
(Pls help with query)
The results would be like
BUILDING_ID INVALID SUB_BUILDING_ID SEQUENCE_NO
1000 N 1 90
2000 N 1 94
3000 N 11 1002)How can the same SEQUENCE_NO be shown for all sub_buildings for the same building? (Pls help with query)
The results will be:
BUILDING_ID INVALID SUB_BUILDING_ID SEQUENCE_NO
1000 N 1 90
1000 N 2 90
1000 N 3 90
2000 N 1 94
2000 N 2 94
2000 N 3 94
2000 N 4 94
2000 N 5 94
3000 N 10 99
3000 N 11 99Many thanks!
Edited by: Krithi on 08-Nov-2012 08:48
Edited by: Krithi on 08-Nov-2012 08:55Krithi wrote:
Hi
I have a complex query to modify but I have below the sample tables and data with only very few fields(only affected fields).
Query based on 2 tables b_test and s_test.
Pls see below.
create table b_test(building_id number not null,invalid varchar2(1));
Thanks for posting the CREATE TABLE and INSERT statements, and your existing query; that's very helpful.
The query below returns all rows required:(also see results:)
select b.building_id,b.invalid,s.sub_building_id,s.sequence_no from b_test b,
(select * from s_test where invalid='N') s
where b.building_id = s.building_id(+)
and b.invalid='N'
Results:
BUILDING_ID INVALID SUB_BUILDING_ID SEQUENCE_NO
1000 N 1 90
1000 N 2 91
1000 N 3 92
2000 N 1 94
2000 N 2 95
2000 N 3 96
2000 N 4 97
2000 N 5 98
3000 N 10 99
3000 N 11 100
When I run your query, I get NULL for sequence_no on the last 2 rows, where building_id=3000. The numbers 99 and 100 don't seem to occur in either table. Did you post the worng sample data and/or results?
>
Now there are 2 requirements:
1)How can the above query be changed so that 1:1 relationship if sub_building_id is returned?i.e For 1 building_id, only show 1 sub_building(This could be a random selection)
(Pls help with query) Here's one way:
WITH got_r_num AS
SELECT sub_building_id
, building_id
, sequence_no
, ROW_NUMBER () OVER ( PARTITION BY building_id
ORDER BY sequence_no
) AS r_num
FROM s_test
WHERE invalid = 'N'
SELECT b.building_id
, b.invalid
, r.sub_building_id
, r.sequence_no
FROM b_test b
LEFT OUTER JOIN got_r_num r ON r.building_id = b.building_id
WHERE NVL ( r.r_num
, 1
) = 1
ORDER BY b.building_id
;This is called a Top-N Query , because we're picking N items (N = 1 in this case) from the top of an ordered list. What makes one item the "top", and another one "lower"? That's determined by the analytic ORDER BY clause, in this case
ORDER BY sequence_noThat means the row with the lowest sequence_no (for each building_id) will get r_num=1. If you want a random row from that building_id to be chosen as #1, then you can change the analytic ORDER BY clause to
ORDER BY dbms_random.valueYou can ORDER BY anything you like, even a constant, but you must have an analytic ORDER BY clause. ROW_NUMBER requires an analytic ORDER BY clause.
The results would be like
BUILDING_ID INVALID SUB_BUILDING_ID SEQUENCE_NO
1000 N 1 90
2000 N 1 94
3000 N 11 100
Again, I don't see where the 100 comes from. The results I get are:
BUILDING_ID I SUB_BUILDING_ID SEQUENCE_NO
1000 N 1 90
2000 N 1 94
3000 N 11
2)How can the same SEQUENCE_NO be shown for all sub_buildings for the same building? (Pls help with query)
SELECT b.building_id
, b.invalid
, s.sub_building_id
, MIN (s.sequence_no) OVER ( PARTITION BY s.building_id)
AS seq_no
FROM b_test b
LEFT OUTER JOIN s_test s ON s.building_id = b.building_id
AND s.invalid = 'N'
The results will be:
BUILDING_ID INVALID SUB_BUILDING_ID SEQUENCE_NO
1000 N 1 90
1000 N 2 90
1000 N 3 90
2000 N 1 94
2000 N 2 94
2000 N 3 94
2000 N 4 94
2000 N 5 94
3000 N 10 99
3000 N 11 99
Again, I don't see where you get sequence_no = 99. The results I get are:
BUILDING_ID I SUB_BUILDING_ID SEQ_NO
1000 N 1 90
1000 N 2 90
1000 N 3 90
2000 N 1 94
2000 N 2 94
2000 N 5 94
2000 N 3 94
2000 N 4 94
3000 N 10
3000 N 11Edited by: Frank Kulash on Nov 8, 2012 12:12 PM
Added explanation and results
Edited by: Frank Kulash on Nov 8, 2012 12:28 PM
It looks like you cahnged your sample data from
insert into s_test values(10,3000,'N',NULL);
insert into s_test values(11,3000,'N',NULL);to
insert into s_test values(10,3000,'N',99);
insert into s_test values(11,3000,'N',100);The queries I posted are niow getting 99, like you requested. -
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I need to stop the play and go to the main page select "Hörbuch" and start over.
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I am having a problem starting the Oracle Listener after a system crash on Windows NT.
However, if I first connect to the internet and then try to restart, everything works ok.
Why should I have to connect to the internet with my laptop in order to start the Oracle Listener?
The message I am getting is as follows.
C:\WINNT\Profiles\timh\Desktop>net start OracleStartORCL
The OracleStartORCL service is starting..........
The OracleStartORCL service was started successfully.
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A system error has occurred.
System error 1067 has occurred.
The process terminated unexpectedly.
nullsome more info.
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Please excuse me if that is the case.
C:\lsnrctl status
LSNRCTL for 32-bit Windows: Version 9.2.0.1.0 - Production on 23-JUL-2007 14:54:28
Copyright (c) 1991, 2002, Oracle Corporation. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=servername)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 9.2.0.1.0 - Produc
tion
Start Date 23-JUL-2007 10:27:09
Uptime 0 days 4 hr. 27 min. 19 sec
Trace Level off
Security OFF
SNMP OFF
Listener Parameter File D:\oracle\ora92\network\admin\listener.ora
Listener Log File D:\oracle\ora92\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=servername.domain)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=servername.domain)(PORT=8080))(Presentation=HTTP)(Session=RAW))
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Service "abcd" has 2 instance(s).
Instance "abcd", status UNKNOWN, has 1 handler(s) for this service...
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Multiple Oracle Homes - Oracle Listener failes to start after installation
Just in case the listener fails to start after an oracle installation, please check the oracle ports in the listener.ora and tnsnames.ora, both of which are present in the following directory:
...\oracle\<SID>\<Ver>\NETWORK\ADMIN
All installations should have separate listener ports eg. If the first installation has port 1527, the next one should be 1528 and so on..
If they do not, manually change the ports and start the listeners.
Also check SAP Note 98252. Although I didn't find it necessary (I think it applies only if you have a single listener for all oracle homes), it did give me an idea that there some config problem in the .ora files.
Also see [this thread|Oracle Listener error in Import ABAP phase?; for related detailshi
thanks for the help ,
I have been using the SQL Server , i am totally blank about Oracle
i am totally confused with this user, and hoststring
i logged in to the enterprise manager using System and manager password
But i cannot connect to any database using SQL Server
i am not remembering any user name or password i have given during installation.
the only thing i remember is
Global databasename = (globedb) i have given
For SID = globedb the same name i have given
for sys ,i have given sysdb as password
and for system i have given systemdb as password
with this can i do anything
when expand the schemas ,i can see the XDB,SCOTT and SYS . how can i login to this .
if i want to login to the scott
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2 systems with 2 Oracle Listener on Windows
Hi Gurus,
I am installing a 2nd system on a Windows server and want to use a separate Listener (with an own port).
sapinst is not able to start the 2nd listener and it is also not possible to start it manually.
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System parameter file is K:\oracle\DEV\102\network\admin\listener.ora
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Thank you
PhilippHi Phillipp,
I have a server with two systems runnning 1527 and 1537 as well, and is was
set up correctly with sapinst. I can query both listeners from the cmd.exe
as both sidadm users by only changing the ORACLE_HOME !
Nothing else matters.
Login devadm -> "lsnrctl status" shows DEV configuration
Then SET ORACLE_HOME to the other installtion
"lsnrctl status" shows QAS configuration
I think you need to use the net assistent to configure correctly, because on windows
both listeners have the same name LISTENER (which does not work on UNIX at all,
and causes shared memory problems there).
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If you manage to get them to work one by one, stop using lsnrctl for anything else but STATUS.
To manage the listeners, use "net start / net stop"
Hope this helps
Volker -
For example, I have a 2D array with 46 rows and 400 columns. I would like to randomly select 46 data rows from the 2D array. By doing the random selection it means that not all individual 46 rows will be selected some rows may appear more than once as there may be some duplicates or triplicates in the random selection. The importan thing is that we will have randomly selected 46 rows of data (no matter that some rows appear more than once). Then I would like to subset these randomly selected 46 data rows (some which will be duplicated, or triplicated, etc.) and then also find and subset the rows that were not selected. Does this make sense? Then i would like to do this say 10 times for this data set. So that then I will have 2 by 10 data sets: the first 10 each with 46 rows and the other 10 with n rows depending on how many WERE NOT randomly selected. i hope that my explanation is clear. I am relatively new to Labview. It is really great so I am getting better! If anyone can help me with this problems it will be great. RVR
Start by generating randon #s between 0 and 45. Run a for loop X times and in it use the random function, multiply the result by X and round down (-infinity). You can make this into a subVI, which you can reuse later. In the same loop, or in a different one, use Index Array to extract the rows which were selected (wiring the result out of the loop with auto indexing causes it to be rebuilt into a 2D array).
One possible solution for the second part would be to go over the array of randomly generated numbers in a for loop and use Search 1D Array to find each of the numbers (i). If you get -1, it means the row wasn't selected and you can extract it.
I hope this puts you on the right path. If not, don't be afraid to ask more.
To learn more about LV, I suggest you read the LabVIEW user manual. Also, try searching this site and google for LabVIEW tutorials. Here and here are a couple you can start with. You can also contact your local NI office and join one of their courses.
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Try to take over the world! -
Spotlight is randomly selective
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Please help me!
(No spelling mistakes, I've even tested copy and paste)Sto, the following post by John McGhie, Microsoft MVP, Word and Word for Macintosh. Consultant Technical Writer, Sydney, Australia may help:
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A Word document internally is a collection of "pieces", some of those pieces are text. If a document were to have, for example, a graphic in the running header, plus a large table of styles and numbering formats, it could well be 80 or 90 kB down the file before you even begin to see "text".
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In a typical Word document, something like half of the bytes in the file are not "text", they're formatting, graphics, styles, numbering, languages, fonts etc. All the usual paraphernalia that distinguishes a Word document from "text". And makes it difficult for search engines to index..."
ref: http://groups.google.com/group/microsoft.public.mac.office.word/browse_thread/th read/7abd44e5c3f38b62/a2425e610a8781a8%23a2425e610a8781a8
Now some would ask, why stop indexing at first 100,000 bytes? Well, not only could it take a lot of time, but the resulting storage could be enormous. As a developer of massive database search and management applications, a recently imported 340mb text file containing 250,000 records ended up at 1.5 gigs. Without indexing, what took 3 minutes to find something, takes less that a second with indexing.
Good luck -
Dear All,
We are unable to bring up the SAP as the Oracle Listener is not starting up. We are able to start our database but unable to start the listener.
The following is the error message we see when we start the oracle listener.
TNS-12547:TNS:LOST CONTACT
TNS-12560:TNS:PROTOCOL ADAPTER ERROR
TNS-00517: LOST CONTACT
LINUX ERROR : 104 : CONNECTIONS RESET BY PEER
CONNECTING TO (ADDRESS=(PROTOCOL=IPC)(KEY=PRD)
TNS-12541:TNS:NO LISTENER
TNS-12560:TNS:PROTOCOL ADAPTER ERROR
TNS-00511: NO LISTENER
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TNS-12541:TNS:NO LISTENER
TNS-12560:TNS:PROTOCOL ADAPTER ERROR
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LINUX ERROR:111:CONNECTION REFUSED
SAP = ECC6.0
O/S = RHEL 5.0
DB = Oracle 10.2
Please update us as what needs to be done.
Best Regards
SumanthThe following is the error message we see when we start the oracle listener.
TNS-12547:TNS:LOST CONTACT
TNS-12560:TNS:PROTOCOL ADAPTER ERROR
TNS-00517: LOST CONTACT
LINUX ERROR : 104 : CONNECTIONS RESET BY PEER
CONNECTING TO (ADDRESS=(PROTOCOL=IPC)(KEY=PRD)
TNS-12541:TNS:NO LISTENER
TNS-12560:TNS:PROTOCOL ADAPTER ERROR
TNS-00511: NO LISTENER
LINUX ERROR:111:CONNECTION REFUSED
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TNS-12541:TNS:NO LISTENER
TNS-12560:TNS:PROTOCOL ADAPTER ERROR
TNS-00511: NO LISTENER
LINUX ERROR:111:CONNECTION REFUSED
SAP = ECC6.0
O/S = RHEL 5.0
DB = Oracle 10.2
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Nmap scan listing random open ports
Hello,
If I issue the following command several times in a row:
nmap -n -r -v -p1-65535 -sT 127.0.0.1
On each run, this command would list the usual open ports (ssh etc., same as netstat), but sometimes there would be 1-3 random open ports somewhere in range 10000..60000, every run different ones. Checking listening ports with netstat never shows any such open ports. Random open ports vanish if I use nmap with -sV or -sS instead of -sT option. I can also replace localhost with LAN address and still get the same results. Could these be false-positives?
I can reproduce this on another Arch box, but not on Ubuntu. Can ask you to try if you are getting similar results, or should I start to worry about a rootkit? Thanks.
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MarkoSeem to be false-positives, see:
http://seclists.org/incidents/2002/Dec/136 -
In oracle rac, If user query a select query and in processing data is fetched but in the duration of fetching the particular node is evicted then how failover to another node internally?
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I synced two of my email accounts via gmail's POP3 capabilities. But now my iphone's gmail inbox only shows a random selection of emails (i.e. right now it is May 31, 2013 but the emails in my inbox are a couple from Nov 12, a few from Oct 12, and then some way older than that and so on.When I log into my gmail from a computer, I see all my emails in the logical, standard order. How can I make my iphone inbox match what I see when I log on using a PC?
If you're trying to decide between using POP and IMAP, we encourage you to use IMAP.
Unlike POP, IMAP offers two-way communication between your web Gmail and your email client. This means when you log in to Gmail using a web browser, actions you perform on email clients and mobile devices (ex: putting mail in a 'work' folder) will instantly and automatically appear in Gmail (ex: it will already have a 'work' label on that email the next time you sign in).
IMAP also provides a better method to access your mail from multiple devices. If you check your email at work, on your mobile phone, and again at home, IMAP ensures that new mail is accessible from any device at any given time.
Finally, IMAP offers a more stable experience overall. Whereas POP is prone to losing messages or downloading the same messages multiple times, IMAP avoids this through two-way syncing capabilities between your mail clients and your web Gmail.
That is from the page that you linked- does highlighted part of message ring a bell?
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