Oracle TNS Connection

Hi Everybody,
I'm a newbie in oracle world, hope that all the expert out there able to shed some lights on me.
i have PHP and Oracle 9i perfectly installed and everything was smooth.
Then later on , i installed 6i (Developer Form), after i've restart my PC
An error message pop out saying undefined oci_connect(). unable to load dynamic..bla bla bla.
I was wondering , could it be a conflict between those 2 version of oracle?
How can i know which oracle that i connect to? oracle 9i or oracle 6i
Thanks in advance

Re: php startup: unable to load dynamic library... php_oci8.dll

Similar Messages

Getting error in TNS connection from Oracle hosted on LINUX machine

Hello,
We moved our databases from Solaris to Linux servers. I am running one multithreaded process which creates a pool of db connection which are shared by threads. On moving to Linx db I am getting below error message
[SERVERERROR] ORA-12520: TNS:listener could not find available handler for requested type of server
My first port of call to resolve this error was to check TNS_ADMIN and tnsnames.ora but they are fine and then I checked DB in db some of threads got connected and did insert data error usually occured when thread release control of connection and another thread picks up.
Later I changed configuration to run only one single thread and then it works fine without any error. I also tried running same process with configured to create one thread from two different sessions and then one session got this error but other continued.
Here is sqlnet.log file generated
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:09
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=SchedulerDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:10
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:10
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:11
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:11
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:15
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:16
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:16
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:16
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:16
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:16
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:21
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:22
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:22
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:22
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:29
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Fatal NI connect error 12520, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MD1SILNXDB03)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TRO10G1)(CID=(PROGRAM=HBFCalcImputedObservationsDebug64)(HOST=md1sisun26)(USER=TROBat01))))
VERSION INFORMATION:
     TNS for Solaris: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.4.0 - Production
Time: 07-FEB-2012 07:50:29
Tracing not turned on.
Tns error struct:
ns main err code: 12564
TNS-12564: TNS:connection refused
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Can anybody help me here in resolving this error.
Thanks
Niraj Rathi

user13534563 wrote:
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=MD1SISUN26.jda.corp.local)(PORT=1521)))
Services Summary...
Service "TRO10G1" has 1 instance(s).
Instance "tm4", status READY, has 1 handler(s) for this service...
I dont have permission to check log file of listner running on DB server. I will try to get that. but I do have sysdba rights.Interesting ... you have permission to see the result of 'lsnrctl status', you have sysdba rights on the db .... but you don't have permission to look at a log file?

TNS connection in Oracle SQL Developer

We have been using TNS connections in SQL Developer. Today we moved a database to a new server but still used the same TNS alias in tnsname.ora file for the database. However, the tns connections in SQL Developer shows this alias still points to the old database host server, therefore unable to connect. There is only one tnsnames.ora file on my PC and I have TNS_ADMIN set up to point to it. But it seems to me SQL Developer does not read this altered alias, but used some kind of "cached" alias which points to the old host. If I add a new alias in tnsnames.ora file, it reads correctly. But it does not refresh an existing alias.
So how is this "Network Alias" dropdown list populated? Even after I delete tnsnames.ora file, the drop down list still not changed. How do I reinitialize this list?

Hi,
You should try and search SQLDeveloper help for TNS, that would give you some clues.
The list for selecting a network alias is initially filled from the tnsnames.ora file on your system, if that file exists.
Connections are stored in IDEConnections.xml.
Regards
Peter

Can't connect to Database through JDeveloper with TNS connection

Hello there,
My work server we can connect to the server using TNS connection and it is working fine with Oracle SQL Developer that provide the type of connection. On the other hands, JDeveloper doesn't. I tried couple time to connect and I am unable to. Can someone tell me how to use a TNS type connection in JDeveloper?
Thank you.

I put server name for host name
From http://asktom.oracle.com
tell me what you consider to be the "server name". do you want the sid?
do you want the database name?
do you want the global database name? what is your concept of a "server name", we don't really have one
Ask Tom &quot;Server Name of the Oracle Database&quot;

Select in Oracle's Connection

Hi
I've had two connection, one for Oracle Database and other for SQL Server Database, both it have worked fine and my question is
How I can show data with one Select in Oracle's Connection for one table in SQL Server ?
I mean
Select * from ConnectSQL..dbo.Table ???
Is it possible ?

Karthick
thanks
I made the DataBase Link but send me this error
ORA 12541 TNS no listener
the connection request could no be completed because the listener is no running
I click in your link, but I can't created the Oracle ODBC ....
How I can to install the oracle client in my local PC ?

Oracle Database Connectivity

T
Edited by: user647180 on 13-Mar-2010 8:50 PM

user647180 wrote:
Hi,
I installed Oracle 10 g database on my windows vista 64 bit operating system , and then I installed Oracle client on windows XP, Finally I copy the tnsnames.ora file on my client site, Now I am able to access the database through my client.
My question is how can I acces my database from anywhere, For example I am at my friend home and I want to acces my home database.
Simple steps would be appreciateable.
ThanksTo answer this sensibly I would to look at a person's level of experience if they have not give much information. So I looked at your 2 previous posts .....
Okay ... let me get you right ........
On Oct 6th 2009 on {message:id=3810910} you said you are an Oracle certified (8i,9i,10g) professional
On Oct 11th 2009 you said on {thread:id=970285} I have two computer, I want to install oracle 10g database on one and client on second. anybody can tell how can i do this? Is 10g database and Client is a different software? and how can i connect client to database,I think something tnsnames.ora?
I am really hard pressed to understand an Oracle certified (8i,9i,10g) professional can ask the Oct 11th 2009 question.
If you are actually legitimately certified, and I have my doubts, please be aware Oracle retains the right to decertify people who do not demonstrate the required level of competence!!
If I've misread something here I must offer my apologies.
One method is to open firewall and establish NAT so your listener is forwarded via a port on your public IP address (which may not be static, so may change from time to time); and arrange for the tns connection stanza on this client to point to this IP and port opening up the firewall at your friends as necassary. Using VPN is another option. The methods for doing these are software and equipment dependent, but hopefully what I have described is a 6/10 description of the process.
Apart from me questioning the validity of your certification credentials .... can I also ask what this has to do with Oracle Certifications on the Oracle Certification forum ? (Database general or installation might be better, though I'm not sure either forum is totally relevant).
And can you see your certifications on Certview [http://certview.oracle.com/] ?

Handling the ORA-12170: TNS:Connect timeout in a procedure

Post moved to:
Handling the ORA-12170: TNS:Connect timeout in a procedure
Edited by: John_75 on Jun 28, 2010 9:33 AM

http://download.oracle.com/docs/cd/B19306_01/network.102/b14212/troublestng.htm#i440403
will give you
http://download.oracle.com/docs/cd/B19306_01/network.102/b14212/troublestng.htm#CEGEDBIE

TNS:connection timeout error

Hi,
I have installed oracle 10g in my system.
the tnsnames.ora file contails the following:
TEST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.2)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = test)
and sqlnet.ora file contains :
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
when i'm trying to login from SQLPLUS as:
sqlplus sys/<password>@<sid> as sysdba
it's showing the error as "ORA-12170 :TNS: connect timeout occured"
C:\Documents and Settings\Administrator>sqlplus sys/<password>@<sid> as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Sep 10 09:47:56 2008
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-12170: TNS:Connect timeout occurred
Enter user-name: sys as sysdba
Enter password:
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL>
But i coudnot connect to Enterprise manager and through Toad because it tells as "TNS:connect timeout occured".
From enterprise manager it shows the instance,listener are down.
trying to start up the instance shows as "not connected to oracle".
Could you please help me for this.
Thanks,
Souvik

user10223265 wrote:
This may help
http://www.errorkey.com/search/Index.aspx?q=TNS-12541
Is this the best you have to offer? I see you keep on posting "+answers+" using this URL. Well, if this is all you have to offer it is pretty pathetic. Please do not bother as there are many here that will actually make an effort to assist the person with the problem. We do not want you to sprain a finger or break a nail looking up the errorkey URL for yet another error code.
Re: why handling ora-01722 with pl/sql not works ???

Logging in Oeacle SQL*Plus (ORA-12170: TNS: Connect timeout occured) ...

I installed recently Oracle 10g. When I try to log in, with the account and password setup[ earlier, I get the message "ORA-12170: TNS: Connect timeout occured". Do I need to specify a Host String" at Log On? Should I un-install and re-install the software again? Thank you.

/* Error:     ORA-12170 (ORA-12170)
Text:     TNS:Connect timeout occurred
Cause:     The server shut down because connection establishment with a
     client failed to complete within the allotted time interval. This
     may be a result of network/system delays; or this may indicate
     that a malicious client is trying to cause a Denial of Service
     attack on the server.
Action:     If the error occurred because of a slow network/system,
     reconfigure the SQLNET.INBOUND_CONNECT_TIMEOUT parameter in
     sqlnet.ora to a larger value. If a malicious client is suspected,
     use the address in sqlnet.log to identify the source and restrict
     access. Note that logged addresses may not be reliable as they can
     be forged (e.g. in TCP/IP).
Could also be a firewall issue.
Werner

Unable to create TNS connection in SQL Developer

This is my first time install SQL Developer 1.5 on my computer and when I try to create a connection using TNS Connection Type to connect to Oracle database, I get this error message:
Status: Failure -lo exception: SO exception was generated.
Do you know how to resolve this error?
Thanks,
Lily

Hi Lily,
This error is due to a tns entry that is unusual/malformed.
Note that
1/sqldeveloper picks up tnsnames.[a variety of endings not just ora] rather than just tnsnames.ora .
2/We recently released 1.5.1[.54.40] is that the release you are using
Can you post the 'problem' tns entry with ip and service name replaced by a stub?
ie something like:
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = my.machine)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = my_service_name)
-Turloch

TNS: connection closed error with SQL*net

Hi all,
I've got a new installation of Oracle 11.1.0.6.0 enterprise (Linux). It works fine with direct sqlplus connections but I'm having problems with SQL*net and JDBC thin client connections.
The database is built correctly and works fine:
user@cthulhu bash[61]: sqlplus user/pwd
SQL*Plus: Release 11.1.0.6.0 - Production on Mon Aug 4 12:59:53 2008
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
PL/SQL Release 11.1.0.6.0 - Production
CORE 11.1.0.6.0 Production
TNS for Linux: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production
SQL>
but if I try to connect using SQL*net I get errors. I have my TNS listener configured and it starts without errors, reporting the database as a service, and tnsping is fine:
user@cthulhu bash[62]: tnsping cthulhu_mar
TNS Ping Utility for Linux: Version 11.1.0.6.0 - Production on 04-AUG-2008 13:02:07
Copyright (c) 1997, 2007, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=TCP)(HOST=192.168.2.30)(PORT=1521)) (CONNECT_DATA=(SID=mar)))
OK (10 msec)
user@cthulhu bash[63]: sqlplus user/pwd@cthulhu_mar
SQL*Plus: Release 11.1.0.6.0 - Production on Mon Aug 4 13:02:41 2008
Copyright (c) 1982, 2007, Oracle. All rights reserved.
ERROR:
ORA-12537: TNS:connection closed
Enter user-name:
In listener.log:
Mon Aug 04 13:02:41 2008
04-AUG-2008 13:02:41 * (CONNECT_DATA=(SID=mar)(CID=(PROGRAM=sqlplus)(HOST=cthulhu)(USER=marbur))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.2.30)(PORT=41754)) * establish * mar * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
TNS-00517: Lost contact
Linux Error: 32: Broken pipe
This is a new instance of Oracle so there is no problem with listener.log being too large (as I've seen elsewhere). I've also tried increasing PROCESSES and SESSIONS in the initSID.ora file without any impact. The listener ports are open through the firewall (and disabling it temporarily makes no difference).
Any suggestions?!
Thanks, Matt

This means nothing to me, but it could to someone else......
from listener trace:
2008-08-04 16:19:05.135381 : nlpcaini:env[161] = OLDPWD=/u01/app/oracle/product/11.1.0/db_1
2008-08-04 16:19:05.135407 : nlpcaini:env[162] = ORA_NET2_DESC=12,15
2008-08-04 16:19:05.135432 : nlpcaini:env[163] = ORACLE_SPAWNED_PROCESS=1
2008-08-04 16:19:05.135465 : nlpcaini:exit
2008-08-04 16:19:05.135498 : nsc2addr:normal exit
2008-08-04 16:19:05.135536 : nsbeqaddr:entry
2008-08-04 16:19:05.135566 : nsbeqaddr:connecting...
2008-08-04 16:19:05.135603 : nsopen:entry
2008-08-04 16:19:05.135633 : nsmal:entry
2008-08-04 16:19:05.135667 : nsmal:1012 bytes at 0x81a8538
2008-08-04 16:19:05.135694 : nsmal:normal exit
2008-08-04 16:19:05.135722 : nsopenmplx:entry
2008-08-04 16:19:05.135749 : nsmal:entry
2008-08-04 16:19:05.135779 : nsmal:2020 bytes at 0x81a8930
2008-08-04 16:19:05.135804 : nsmal:normal exit
2008-08-04 16:19:05.135831 : nsiorini:entry
2008-08-04 16:19:05.135861 : nsbal:entry
2008-08-04 16:19:05.135889 : nsbgetfl:entry
2008-08-04 16:19:05.135918 : nsbgetfl:normal exit
2008-08-04 16:19:05.135966 : nsmal:entry
2008-08-04 16:19:05.135995 : nsmal:84 bytes at 0x81b3dd8
2008-08-04 16:19:05.136020 : nsmal:normal exit
2008-08-04 16:19:05.136057 : nsbal:normal exit
2008-08-04 16:19:05.136085 : nsiorini:exit (0)
2008-08-04 16:19:05.136112 : nscpxget:entry
2008-08-04 16:19:05.136139 : nscpxget:normal exit
2008-08-04 16:19:05.136168 : nsopenalloc_nsntx:nlhthput on mplx_ht_nsgbu:ctx=81a8538, nsntx=81a8930
2008-08-04 16:19:05.136196 : nsopenmplx:normal exit
2008-08-04 16:19:05.136225 : ntpcon:entry
2008-08-04 16:19:05.136253 : ntpcon:toc = 6
2008-08-04 16:19:05.136283 : ntpcon:exit
2008-08-04 16:19:05.136313 : nsopen:opening transport...
2008-08-04 16:19:05.136341 : ntpcon:entry
2008-08-04 16:19:05.136367 : ntpcon:toc = 1
2008-08-04 16:19:05.136404 : sntpcall:entry
2008-08-04 16:19:05.157048 : sntpcall:detaching from parent with additional fork
2008-08-04 16:19:05.157304 : sntpcall:hdl[IR]=17, hdl[IW]=16
2008-08-04 16:19:05.157350 : ntpcon:exit
2008-08-04 16:19:05.157390 : nserror:entry
2008-08-04 16:19:05.157428 : nsoptions:entry
2008-08-04 16:19:05.157459 : nsoptions:lcl[0]=0x0, lcl[1]=0x2006, gbl[0]=0x0, gbl[1]=0x0, cha=0x0
2008-08-04 16:19:05.157488 : nsoptions:Vectored IO not supported.
2008-08-04 16:19:05.157518 : nsoptions:lcl[0]=0xf4ffe9ff, lcl[1]=0x6016, gbl[0]=0xe881, gbl[1]=0x0
2008-08-04 16:19:05.157545 : nsoptions:normal exit
2008-08-04 16:19:05.157574 : nsnainit:entry
2008-08-04 16:19:05.157603 : nsnainit:normal exit
2008-08-04 16:19:05.157642 : nsopen:global context check-in (to slot 6) complete
2008-08-04 16:19:05.157675 : nsopen:lcl[0]=0xf4ffe9ff, lcl[1]=0x6016, gbl[0]=0xe881, gbl[1]=0x0, tdu=4096, sdu=8192
2008-08-04 16:19:05.157706 : nsfull_opn:entry
2008-08-04 16:19:05.157735 : nsfull_opn:cid=6, opcode=65, bl=0, what=0, uflgs=0x0, cflgs=0x0
2008-08-04 16:19:05.157761 : nsfull_opn:nsctx: state=7, flg=0x4001, mvd=0
2008-08-04 16:19:05.157790 : nsfull_opn:normal exit
2008-08-04 16:19:05.157816 : nsopen:normal exit
2008-08-04 16:19:05.157854 : nsevreg:entry
2008-08-04 16:19:05.157884 : nsevreg:begin registration process for 6
2008-08-04 16:19:05.157912 : nsevregPrePost:entry
2008-08-04 16:19:05.157940 : nsevregPrePost:normal exit
2008-08-04 16:19:05.157968 : nsevreg:sgt=0, evn=1, evt[2]=0x0
2008-08-04 16:19:05.157996 : nsevreg:begin notification process for 6
2008-08-04 16:19:05.158022 : nsevregAffectNotif:entry
2008-08-04 16:19:05.158050 : nsevregAffectNotif:exit (0)
2008-08-04 16:19:05.158078 : nsevreg:rdm=0, sgt=0, evt[0]=0x800, [1]=0x800, [2]=0x0, nrg=0
2008-08-04 16:19:05.158105 : nsevreg:registering for 0x800
2008-08-04 16:19:05.158135 : ntpctl:entry
2008-08-04 16:19:05.158162 : ntpctl:exit
2008-08-04 16:19:05.158203 : nsevreg:normal exit
2008-08-04 16:19:05.158260 : nsbeqaddr:error exit
2008-08-04 16:19:05.158289 : nsbequeath:error exit
2008-08-04 16:19:05.158342 : nsglhe:exit

WorkflowCA: TNS Connection String format not recognised

When I launch the scripts /wfinstall.csh, I get following error message:
[oracle@blmcqb install]$ Workflow Configuration Assistant - Linux
4
Parameter "wfdir" = /oracle/product/10.2.0/MPROD/wf
Parameter "orahome" = /oracle/product/10.2.0/MPROD
WorkflowCA: /oracle/product/10.2.0/MPROD/wf/install/workflow.log
WorkflowCA:
WorkflowCA: Workflow Configuration in progress...
WorkflowCA: Thu Mar 08 14:51:26 EST 2007
WorkflowCA:
WorkflowCA: Screen width -1024-, screen height -768-
WorkflowCA: TNS Connection String format not recognised
WorkflowCA:
WorkflowCA: Graphics User Interface mode
WorkflowCA:
WorkflowCA: Thu Mar 08 14:51:58 EST 2007
WorkflowCA: Invalid connect methodTWO_TASK=]
WorkflowCA: Terminating..
However, I can access the database without any problem:
[oracle@blmcqb install]$ tnsping OWBLAB
TNS Ping Utility for Linux: Version 10.2.0.3.0 - Production on 08-MAR-2007 15:01:24
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 = blmcqb)(PORT = 1522))) (CONNECT_DATA = (SERVICE_NAME = OWBLAB)))
OK (0 msec)
[oracle@blmcqb install]$ sqlplus sys/rootpasswd@owblab as sysdba
SQL*Plus: Release 10.2.0.3.0 - Production on Thu Mar 8 15:02:05 2007
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL> select name, open_mode from v$database;
NAME OPEN_MODE
OWBLAB READ WRITE
Does any expert has any idea?

I got the same error. Then I gave whole string to ./wfinstall and then the Installation pass ok!
Like: (DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = rubik.my.domain)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = rubikdb.my.domain)))
Best Regards Antti

ORA-12564: TNS:connection refused

C# code:
private Oracle.DataAccess.Client.OracleConnection objConn;
objConn.ConnectionString = "User Id=tst;Data Source=CZETEST;Password=1234;"
objConn.Open();
tnsnames.ora
CZETEST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = XXX.NET)(PORT = 1621))
(CONNECT_DATA =
(SERVICE_NAME = XXX.CZ)
I'm trying to connect to an Oracle 10g server.
objConn.Open(); always ends with "ORA-12564: TNS:connection refused"
I've even tried to let the connection build by ODT connection wizzard ('Test connection' button displays 'Connection was successfull', but when the code is run the result is unfortunately the same :(
Anybody knows where the problem should be?

This is often a malformed tnsnames.ora. Is what you posted a snippet, because it looks to me that you a closing ) too many. You can turn on tracing which should help you find the problem. It's odd that odt says the connection works, though.

TNS-12537: TNS:connection closed

Hi,
I have done system copy on AIX/oracle. On new server if start the listner. it starts normally. Oracle also starts normal. Then if i starts sap with sidadm, listner stops with following error. There is no error In listner.log file.
orascp 11> lsnrctl status
LSNRCTL for IBM/AIX RISC System/6000: Version 10.2.0.2.0 - Production on 28-SEP-2008 12:11:15
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=IPC)(KEY=SCP.WORLD))
TNS-12537: TNS:connection closed
TNS-12560: TNS:protocol adapter error
TNS-00507: Connection closed
Connecting to (ADDRESS=(PROTOCOL=IPC)(KEY=SCP))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
IBM/AIX RISC System/6000 Error: 79: Connection refused
Connecting to (ADDRESS=(COMMUNITY=SAP.WORLD)(PROTOCOL=TCP)(HOST=sppprd)(PORT=1527))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
IBM/AIX RISC System/6000 Error: 79: Connection refused

Hi Sanjay,
check below notes
Note 1182020
Note 441518
Regards
Ashok

Oracle TNS Listener password

Where do I specify the tns listener password in CF MX. I have
added a password to the oracle TNS listener service. I need to get
MX to pass this password to the oracle server. Is there a place to
do this.
cfk

Here is what I was given from our security group here at
USDOJ:
We are using 9i,
Server Product ColdFusion MX
Version 7,0,2,142559
Edition Enterprise
Serial Number
Operating System Windows 2003
OS Version 5.2
Description:
A Oracle TNS Listener has been detected on the host with
login security disabled (SECURITY=OFF).
Observation:
Oracle is an enterprise level database which is available on
many different platforms.
A configuration vulnerability exists within the Oracle TNS
Listener which allows remote unauthenticated access. The TNS
Listener accepts a clients request and establishes a TNS
(Transparent Network Substrate) data connection between the client
and the service. A TNS connection allows clients and servers to
communicate over a network via a common API, regardless of the
network protocol used on either end (TCP/IP, IPX, etc). A default
installation of the TNS listens on TCP port 1521.
Vulnerable Systems:
Oracle 8i
Oracle 9i
Recommendation:
It is recommended to only allow certain IP's or subnet ranges
to access the TNS listener. This can be done by adding a rule in
the firewall. We also recommend that you enable a password for the
TNS listener within Oracle

Oracle TNS Connection

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