Connectivity errors : TNS 15241

Hello all of you,
I'am installing virtual box 4.0 on a windows 7 laptop . I'am trying to put on this virtualization software this prebuilt VM
http://www.oracle.com/technetwork/database/enterprise-edition/databaseappdev-vm-161299.html (a Oracle Enterprise Linux and 11gR2 Oracle Database)
On the host I installing and Oracle Warehouse Builder 11g Release 2 (11.2.0.1.0) Standalone Software .
I would like to connect Warehouse Builder tools (Design Center , Repository Administration) to the repository inside the Oracle database (inside VM) . But I'am not succeding ...
I used 'tnsping owb' from my laptop but I got 12541 : no listener
On my host machine (my laptop) I added a entry like this one:
OWB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
Inside the virtual machine I have /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora file ,it looks like this
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 80))
(PROTOCOL_STACK =
(PRESENTATION = HTTP)
(SESSION = RAW)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 21))
(PROTOCOL_STACK =
(PRESENTATION = FTP)
(SESSION = RAW)
ADR_BASE_LISTENER = /ho$me/oracle/app/oracle
logging_listener_name=on
I understand this depends about network settings from this wirtual box machine - NAT,Bridged Adapter,Host only adapter,internal network and network configs of host machine.
My laptop gets IP address from dhcp .
I understand Bridged networking is best suited for my needs (it's recomended for running servers)
Why do you think I getting troube?
Many thanks,
Aurel

Just start with the basic, can you ping your VM from your laptop? Can you setup a SSH session. This way you can check if you can initiate any connection at all to your VM.
If that is not the case you know you have a network issue, if you can setup (for example) a SSH session you know you have a database issue.
You also might want to check if you have firewall on your VM machine blocking your requests. Please do a check if you have any iptables firewall running. This might be blocking for you.
Keep us posted :-)
Regards,
Johan Louwers.

Similar Messages

"no ocijdbc11 in java.library.path" error when connecting a TNS database co

Hi
"no ocijdbc11 in java.library.path" error when connecting a TNS database connection
I have the same problem 'error code' when testing the connection to a database although I have an APEX db that connects without a problem.
I have re downloaded jre & SQL Developer just to ensure all files are where they should be with no luck.
I've also tried most of the suggestions in various threads.
Does anyone know what exactly causes this error?
eg; should I be looking for a file called 'ocijdbc11' & put it into the 'java.library.path' path?
Can anyone explain to a newbie at db connections what I should do?
I'm using the 'thin' client as the checkbox is clear & I don't know what path to enter into the correct file to make this work??
This is & needs to connect as a TNS connection & was working fine until recently, the only change I can think of is a move of files from the 'C' drive but I thought redownloading SQL Developer would slove this.
Thanks

When you reinstalled SQL Developer, did you install into a new directory (ie rename or delete the old directory first)?
I don't know if system setup contains directory references (which might be invalid after moving the location of SQL Developer). Does renaming your system2.1.1.64.45 directory (in C:\Documents and Settings\username\Application Data\SQL Developer) help? Note that your connections are in the connections.xml file in the o.jdeveloper.db.connection.11.1.1.2.36.55.30 subdirectory of system2.1.1.64.45 - you will either need to export connections before renaming and then import again after or copy this file to test if you can connect.
Finally, the TNS Names directory preference is just a way of telling SQL Developer where to look for the tnsnames.ora file, rather than just assuming it will pick the right one. If you go to create a new connection, do you get the right list of TNS aliases? If not, then set this preference to the directory where the right tnsnames.ora file lives.
theFurryOne

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>

App File Server connection error when trying to run a BI Publisher report..

hello Gurus...
As above - App File Server connection error when trying to run a BI Publisher report.. FOR THE FIRST TIME.
What does our DBA need to do..?
error message reads..
Template code: SUARXASR
Template app: AR
Language:      en
Territory:     GB
Output type:   EXCEL
[5/10/10 10:59:27 AM] [UNEXPECTED] [46321:RT1487572]
oracle.apps.fnd.cp.util.RemoteFileException: An error occurred while attempting to establish an Applications File Server connection with the node FNDFS_*****.ac.uk. There may be a network configuration problem, or the TNS listener on node FNDFS_*****.ac.uk may not be running. Please contact your system administrator.
at oracle.apps.fnd.cp.util.RemoteFile.readURL(RemoteFile.java:241)
at oracle.apps.fnd.cp.util.RemoteFile.transferFile(RemoteFile.java:194)
at oracle.apps.fnd.cp.util.RemoteFile.transfer(RemoteFile.java:130)
at oracle.apps.fnd.cp.opp.XMLPublisherProcessor.process(XMLPublisherProcessor.java:264)at oracle.apps.fnd.cp.opp.OPPRequestThread.run(OPPRequestThread.java:157)
[5/10/10 10:59:27 AM] [46321:RT1487572] Completed post-processing actions for request 1487572.I'm sure we never had to set anything up in our Test instance!??!!??
many thanks for looking..
Steven

nobody experienced this before..?

Fatal NI connect error 12547/12170

Hi,
I am stakk with connection problem on customer Oracle server. Oracle database is installed on Microsoft Windows Server 2012 Standard. Version of Oracle DB is 11.2.0.4 Standard One Edition.
Oracle database works fine on server. I had no problems/errors while installing (as admin). My user is memer of Local Admin Group. I am also able to connect to it with sqlplus (sqlplus username/password@tns_alias) and SQL Developer.
Content of tnsnames, listener og sqlnet files are following:
tnsnames.ora
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
 (ADDRESS_LIST = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) )
 (CONNECT_DATA = (SID = CLRExtProc) (PRESENTATION = RO) ) )
SALES =
(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.9)(PORT = 1521))
(CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = sales.company.se)))
listener.ora
SID_LIST_LISTENER =
(SID_LIST =
 (SID_DESC =
 (SID_NAME = CLRExtProc) (ORACLE_HOME = D:\oracle\product\11.2.0\dbhome_1)
 (PROGRAM = extproc) (ENVS = "EXTPROC_DLLS=ONLY:D:\oracle\product\11.2.0\dbhome_1\bin\oraclr11.dll") ) )
LISTENER =
(DESCRIPTION_LIST =
 (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = servername.company.se)(PORT = 1521))
 (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))))
ADR_BASE_LISTENER = D:\oracle
INBOUND_CONNECTION_TIMEOUT_LISTENER=180
sqlnet.ora
SQLNET.AUTHENTICATION_SERVICES= (NONE)
SQLNET.INBOUND_CONNECT_TIMEOUT = 180
ADR_BASE = D:\oracle\product\11.2.0\dbhome_1\log
I am using VPN tunnel to connect to database from my client. I can ping server successfully. TNSPING to database works fine, but I am not able to connect to database. I get an error on client:
ORA-12537 connection closed error.
Alert log content is following:
Fatal NI connect error 12547, connecting to:
(LOCAL=NO)
VERSION INFORMATION:
TNS for 64-bit Windows: Version 11.2.0.4.0 - Production
Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.4.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.4.0 - Production
Time: 19-DEC-2013 13:01:47
Tracing not turned on.
Tns error struct:
 ns main err code: 12547
TNS-12547: TNS:lost contact
 ns secondary err code: 12560
 nt main err code: 0
 nt secondary err code: 0
 nt OS err code: 0
opiodr aborting process unknown ospid (88) as a result of ORA-609
2013-12-19 13:05:28.990000 +01:00
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for 64-bit Windows: Version 11.2.0.4.0 - Production
Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.4.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.4.0 - Production
Time: 19-DEC-2013 13:05:28
Tracing not turned on.
Tns error struct:
 ns main err code: 12535
TNS-12535: TNS:operation timed out
 ns secondary err code: 12606
 nt main err code: 0
 nt secondary err code: 0
 nt OS err code: 0
Client address: <unknown>
opiodr aborting process unknown ospid (2384) as a result of ORA-609
2013-12-19 13:44:44.855000 +01:00
opiodr aborting process unknown ospid (1292) as a result of ORA-609
2013-12-19 14:30:34.351000 +01:00
I supposed that connection could use some more time so I set inbound_connection to 180 (3 minutes). Same error.
Then I turn on support trace. Here is analyzed content:
server_4424.trc
Trying to get IP client address results in error. Host IP is not correct.
[19-DEC-2013 13:42:35:692] nsgetclientaddress: Client address: "(ADDRESS=(PROTOCOL=tcp)(HOST=::1)(PORT=53749))"
[19-DEC-2013 13:42:35:692] nsgetclientaddress: exit
[19-DEC-2013 13:42:35:692] nszgclient: entry
[19-DEC-2013 13:42:35:692] nszgclient: using dedicated context
[19-DEC-2013 13:42:35:692] nazsgsnm: entry
[19-DEC-2013 13:42:35:692] nau_genm: entry
[19-DEC-2013 13:42:35:692] nau_genm: exit
[19-DEC-2013 13:42:35:692] nazsgsnm: failed with error 12630
[19-DEC-2013 13:42:35:692] nazsgsnm: exit
[19-DEC-2013 13:42:35:692] nszgclient: returning no username
[19-DEC-2013 13:42:35:692] nszgclient: returning no username
[19-DEC-2013 13:42:35:692] nszgclient: exit
[19-DEC-2013 13:42:35:692] nszgetuser: entry
[19-DEC-2013 13:42:35:692] nszgetuser: using dedicated context
[19-DEC-2013 13:42:35:692] nazsgunm: entry
[19-DEC-2013 13:42:35:692] nau_gnm: entry
[19-DEC-2013 13:42:35:692] nau_gnm: exit
[19-DEC-2013 13:42:35:692] nazsgunm: failed with error 12630
Getting package from client. And when reached to @ we get EOF (daflag=64)
[19-DEC-2013 13:42:35:724] nttfprd: exit
[19-DEC-2013 13:42:35:724] nsbasic_brc: type=6, plen=10
[19-DEC-2013 13:42:35:724] nsbasic_brc: what=1, tot =10
[19-DEC-2013 13:42:35:724] nsbasic_brc: packet dump
[19-DEC-2013 13:42:35:724] nsbasic_brc: 00 0A 00 00 06 00 00 00 |........|
[19-DEC-2013 13:42:35:724] nsbasic_brc: 00 40 |.@ |
[19-DEC-2013 13:42:35:724] nsbasic_brc: Got EOF (daflag=64).
[19-DEC-2013 13:42:35:724] nserror: entry
[19-DEC-2013 13:42:35:724] nsbasic_brc: exit: oln=0, dln=0, tot=10, rc=-1
[19-DEC-2013 13:42:35:724] nioqer: entry
[19-DEC-2013 13:42:35:724] nioqer: incoming err = 12151
[19-DEC-2013 13:42:35:724] nioqce: entry
[19-DEC-2013 13:42:35:724] nioqce: exit
[19-DEC-2013 13:42:35:724] nioqer: returning err = 3113
[19-DEC-2013 13:42:35:724] nioqer: exit
[19-DEC-2013 13:42:35:724] nioqrc: exit
[19-DEC-2013 13:42:35:724] nioqds: entry
[19-DEC-2013 13:42:35:724] nioqds: disconnecting...
Handshake never succeded. Client was trying to read from transport but never succeeded. I assume it is because of wrong or non Client address: "(ADDRESS=(PROTOCOL=tcp)(HOST=::1)(PORT=53749))"
[19-DEC-2013 13:41:43:803] nscon: doing connect handshake...
[19-DEC-2013 13:41:43:803] nscon: recving a packet
[19-DEC-2013 13:41:43:803] nsprecv: entry
[19-DEC-2013 13:41:43:803] nsprecv: reading from transport...
[19-DEC-2013 13:41:43:803] nttrd: entry
[19-DEC-2013 13:44:44:855] nttrd: exit
[19-DEC-2013 13:44:44:855] ntt2err: entry
[19-DEC-2013 13:44:44:855] ntt2err: Read unexpected EOF ERROR on 2648
[19-DEC-2013 13:44:44:855] ntt2err: exit
[19-DEC-2013 13:44:44:855] nsprecv: error exit
[19-DEC-2013 13:44:44:855] nserror: entry
[19-DEC-2013 13:44:44:855] nserror: nsres: id=0, op=68, ns=12535, ns2=12606; nt[0]=0, nt[1]=0, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
[19-DEC-2013 13:44:44:855] nscon: error exit
[19-DEC-2013 13:44:44:855] nsdo: nsctxrnk=0
[19-DEC-2013 13:44:44:855] nsdo: error exit
[19-DEC-2013 13:44:44:855] nsinh_hoff: error recving request
[19-DEC-2013 13:44:44:855] nsclose: entry
[19-DEC-2013 13:44:44:855] nsvntx_dei: entry
[19-DEC-2013 13:44:44:855] nsvntx_dei: exit
[19-DEC-2013 13:44:44:855] nstimarmed: entry
[19-DEC-2013 13:44:44:855] nstimarmed: no timer allocated
[19-DEC-2013 13:44:44:855] nstimarmed: normal exit
[19-DEC-2013 13:44:44:855] nstoClearTimeout: entry
[19-DEC-2013 13:44:44:855] nstoClearTimeout: ATO disabled for ctx=0x000000001812ED30
[19-DEC-2013 13:44:44:855] nstoClearTimeout: STO disabled for ctx=0x000000001812ED30
[19-DEC-2013 13:44:44:855] nstoClearTimeout: RTO disabled for ctx=0x000000001812ED30
[19-DEC-2013 13:44:44:855] nstoClearTimeout: PITO disabled for ctx=0x000000001812ED30
[19-DEC-2013 13:44:44:855] nstoUpdateActive: entry
[19-DEC-2013 13:44:44:855] nstoUpdateActive: Active timeout is -1 (see nstotyp)
[19-DEC-2013 13:44:44:855] nstoDestroyAlarm: entry
[19-DEC-2013 13:44:44:855] nstoDestroyAlarm: exit (0)
[19-DEC-2013 13:44:44:855] nttctl: entry
[19-DEC-2013 13:44:44:855] ntt2err: entry
[19-DEC-2013 13:44:44:855] ntt2err: soc -1 error - operation=7, ntresnt[0]=530, ntresnt[1]=38, ntresnt[2]=0
[19-DEC-2013 13:44:44:855] ntt2err: exit
[19-DEC-2013 13:44:44:855] nttctl: entry
[19-DEC-2013 13:44:44:855] ntt2err: entry
[19-DEC-2013 13:44:44:855] ntt2err: soc -1 error - operation=7, ntresnt[0]=530, ntresnt[1]=38, ntresnt[2]=0
[19-DEC-2013 13:44:44:855] ntt2err: exit
[19-DEC-2013 13:44:44:855] nsfull_cls: entry
[19-DEC-2013 13:44:44:855] nsfull_cls: cid=0, opcode=65, *bl=0, *what=0, uflgs=0x0, cflgs=0x40
[19-DEC-2013 13:44:44:855] nsfull_cls: nsctx: state=1, flg=0x4000, mvd=0
[19-DEC-2013 13:44:44:855] nsbfr: entry
After 180 sec Oracle net sends following message:
[19-DEC-2013 13:44:44:855] nsclose: normal exit
[19-DEC-2013 13:44:44:855] nserror: entry
[19-DEC-2013 13:44:44:855] nserror: nsres: id=0, op=73, ns=12535, ns2=12606; nt[0]=0, nt[1]=0, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
[19-DEC-2013 13:44:44:855] nsinherit: error exit
[19-DEC-2013 13:44:44:855] nioqper: error from nsinherit: failed...
[19-DEC-2013 13:44:44:855] nioqper: ns main err code: 12535
[19-DEC-2013 13:44:44:855] nioqper: ns (2) err code: 12606
[19-DEC-2013 13:44:44:855] nioqper: nt main err code: 0
[19-DEC-2013 13:44:44:855] nioqper: nt (2) err code: 0
[19-DEC-2013 13:44:44:855] nioqper: nt OS err code: 0
[19-DEC-2013 13:44:44:855] niotns: No broken-connection function available.
[19-DEC-2013 13:44:44:855] niomapnserror: entry
[19-DEC-2013 13:44:44:855] niqme: entry
[19-DEC-2013 13:44:44:855] niqme: reporting NS-12535 error as ORA-12535
[19-DEC-2013 13:44:44:855] niqme: exit
[19-DEC-2013 13:44:44:855] niomapnserror: exit
[19-DEC-2013 13:44:44:855] niotns: Couldn't connect, returning 12170
[19-DEC-2013 13:44:44:855] nioqer: entry
[19-DEC-2013 13:44:44:855] nioqer: incoming err = 12170
[19-DEC-2013 13:44:44:855] nioqce: entry
[19-DEC-2013 13:44:44:855] nioqce: exit
[19-DEC-2013 13:44:44:855] nioqer: returning err = 3136
Firewall is off on Server. Network administrator says that there is no rules which could compromise communication/traffic on port 1521. I tried trcroute too and I get following conntent
1 27ms 22 ms 17ms 192.168.97.1
2 * * * request aborted
3 20 ms 18 ms 18 ms server.company.se (192.168.1.9)
Any suggestion, help or comments would be appriciated. I am running out of ideas.
Tnx a lot,
adi

The error could be due to a port change/reconnect/redirect that fails.
The problem: Listener.exe is a separate physical process image in the kernel as the Oracle.exe process. The Listener needs to start an Oracle dedicated server process (created by the Listener as a remote thread in the oracle.exe process). Then it needs to pass the socket handle (created when the Listener accepted the tcp connection of the client) to this thread in another physical process - in order for that thread to continue tcp comms with the client.
This is not by default supported in Windows as I understand (always wrote a single threaded exe myself with the main thread acting as listener and child threads as dealing with client sessions, when developing Win32 tcp servers).
On Unix/Linux it is fairly common to pass the socket handle as stdin and stdout to a forked child process (a separate physical process).
If the socket handle cannot be passed from the listener.exe to oracle.exe, then the oracle.exe thread could open a private port as tcp listening end-point and inform, via the Listener, the client to reconnect to that tcp port (i.e. SQL*Net on client gets a redirect).
You will need to determine whether this is happening - as it would explain the initial successful tcp connect from client to Listener, followed by the tcp connection failing to the Oracle dedicated server process.
Not sure how one checks on Windows - have last done Oracle on Windows back with Oracle 7.1. But I think there are support notes on this.
I would use netstat myself on Linux/Unix - and list the ports used by client and server for the connection, and determine if a private/dynamic port was used to continue the client-server tcp communication as a renegotiated tcp session. netstat is also available on Windows and can be used in a similar fashion too.

Fatal NI connect error 12203 resulting huge increase in sqlnet.log file

Hi,
I am getting the following error message in SQLNET.LOG file on the client machine. This is my upload program which takes few hours to complete and during the program run, the size of SQLNET.LOG file keeps on increasing and goes to 100's of MB and it contains only this error repeatedly.
But my program gets connected to Database and does the upload. But the size of SQLNET.LOG file grows like anything. Pls let me know what's going wrong.
ERROR in SQLNET.LOG File -
Fatal NI connect error 12203, connecting to:
(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=oracle80)(ARGV0=oracle80ORCL)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))')))(CONNECT_DATA=(SID=ORCL)(CID=(PROGRAM=C:\ORAWIN95\BIN\IFRUN60.EXE)(HOST=IT_DBA)(USER=IT))))
VERSION INFORMATION:
     TNS for 32-bit Windows: Version 8.0.5.0.0 - Production
     Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 8.0.4.0.0 - Production
     Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 8.0.5.0.0 - Production
Time: 06-MAR-03 12:37:08
Tracing not turned on.
Tns error struct:
nr err code: 12203
TNS-12203: TNS:unable to connect to destination
ns main err code: 12560
TNS-12560: TNS:protocol adapter error
ns secondary err code: 0
nt main err code: 102
TNS-00102: Keyword-Value binding operation error
nt secondary err code: 0
nt OS err code: 0
Regards,
Mitesh V.

Hi,
Actually I thought this error is appearing in only one of the machines, but when I am figuring out, I found the same error in almost all the client machines.
Though the programs are running fine getting the database connectivity, I am not able to find why it is giving error showing connection through BEQ protocol.
Pls someone tell me why this is happening and how I will find out which protocol it is using.
Regards,
Mitesh Vijayvargiy

TNS-12560: TNS:protocol adapter error TNS-00530: Protocol adapter error

Unable to start listener service.
Running Oracle Database 11gr2 on Windows 7.
I just installed Oracle with the "install software only" option.
Already set up the instance, the database, the dictionary views, etc.
Created tsnames.ora, sqlnet.ora and listener.ora as shown below.
Before installing Oracle I followed the instruction on Oracle
documentation to install a Loopback Adapter.
It is set up as the primary adapter as indicated on the
instructions. The name is "gabylan" (previously the computer
name was "P4". I set up the "hosts" file as indicated, the oracle_hostname
variable, etc. as you will see below. I don't know if it's important to "uncomment"
the line on the "hosts" file for the "localhost" entry, I left it
as it was originally.
Services currently in "Started" Status:
OracleServiceorcl
Oracle orcl VSS Writer Service
OracleMTSRecoveryService
OracleOraDb11g_home1ClrAgent
OracleServiceorcl
Below is a summary of the error message and some information
about my system setup to help you diagnose my problem.
===============================================================================
c:\Users\Public\myscripts>lsnrctl start
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 18-SEP-2012 13:48
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Starting tnslsnr: please wait...
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
c:\Users\Public\myscripts> lsnrctl status
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 18-SEP-2012 16:17:16
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=gabylan)(PORT=1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
32-bit Windows Error: 61: Unknown error
================================================================================
My "hosts" File: (c:\windows\system32\drivers\etc\hosts)
# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost
192.168.5.5 gabylan gabylan
=================================================================================
c:\Users\Public\myscripts>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : gabylan
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection 2:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Loopback Adapter
Physical Address. . . . . . . . . : 02-00-4C-4F-4F-50
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::b8f5:bbb0:cf8b:c735%15(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.5.5(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 335675468
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-B7-78-52-00-25-22-51-68-AB
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8102E/RTL8103E Family PCI-E Fast Ethernet NIC (NDIS 6.20)
Physical Address. . . . . . . . . : 00-25-22-51-68-AB
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::7538:173c:c202:4985%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, September 18, 2012 11:37:37 AM
Lease Expires . . . . . . . . . . : Wednesday, September 19, 2012 1:45:01 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 234890530
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-B7-78-52-00-25-22-51-68-AB
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
=================================================================================
# sqlnet.ora Network Configuration File:
# c:\app\oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN\sqlnet.ora
# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.
# OTHER OPTION FOR AUTHENTICATION IS: SQLNET.AUTHENTICATION_SERVICES= (NTS)
SQLNET.AUTHENTICATION_SERVICES= (NONE)
NAMES.DIRECTORY_PATH= (TNSNAMES, HOSTNAME, EZCONNECT)
ADR_BASE = c:\app\oracle\
====================================================================================
# tnsnames.ora Network Configuration File:
# c:\app\oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN\tnsnames.ora
orcl =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = gabylan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
====================================================================================
# listener.ora Network Configuration File:
# c:\app\oracle\product\11.2.0\dbhome_1\network\admin\listener.ora
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = gabylan)(PORT = 1521))
SID_LIST_LISTENER =
 (SID_LIST =
 (SID_DESC =
 (ORACLE_HOME = c:\app\oracle\product\11.2.0\dbhome_1)
 (SID_NAME = orcl)
ADR_BASE_LISTENER = c:\app\oracle
=================================================================================
c:\Users\Public\myscripts>ping gabylan
Pinging gabylan [192.168.5.5] with 32 bytes of data:
Reply from 192.168.5.5: bytes=32 time<1ms TTL=128
Reply from 192.168.5.5: bytes=32 time<1ms TTL=128
Reply from 192.168.5.5: bytes=32 time<1ms TTL=128
Reply from 192.168.5.5: bytes=32 time<1ms TTL=128
Ping statistics for 192.168.5.5:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
=================================================================================
Some related environment variables on my system:
COMPUTERNAME=GABYLAN
FP_NO_HOST_CHECK=NO
HOMEPATH=\Users\oracle
LOGONSERVER=\\GABYLAN
ORACLE_HOME=c:\app\oracle\product\11.2.0\dbhome_1
ORACLE_HOSTNAME=gabylan
ORACLE_SID=orcl
ORACLE_UNQNAME=orcl
SQLPATH=c:\users\public\myscripts
USERDOMAIN=GABYLAN
USERNAME=oracle
USERPROFILE=C:\Users\oracle
==================================================================================
Summary from V$INSTANCE VIEW:
INSTANCE
NAME HOSTNAME STARTUP_T STATUS DATABASE_STATUS ACTIVE_ST
orcl GABYLAN STARTED ACTIVE NORMAL
=================================================================================
Thanks,
Gabriel

I am getting the same error while starting or stopping the listener
LSNRCTL> start CSCLIST
Starting tnslsnr: please wait...
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
LSNRCTL> stop CSCLIST
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=CSCINDAE708070)(PORT=152
2)))
NL-00303: syntax error in NV string
TNS-01153: Failed to process string: (DESCRIPTION=(CONNECT_DATA=(CID=(PROGRAM=)
(HOST=)(USER=Manager(REMOVE)))(COMMAND=stop)(ARGUMENTS=64)(SERVICE=CSCLIST)(VERS
ION=186646784)))
Pls help
Listener.ora:
# listener.ora Network Configuration File: D:\Sagaya\11gDBhome\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
CSCLIST =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = CSCINDAE708070)(PORT = 1522))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
SID_LIST_CSCLIST =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = D:\Sagaya\11gDBhome\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:D:\Sagaya\11gDBhome\product\11.2.0\dbhome_1\bin\oraclr11.dll")
ADR_BASE_CSCLIST = D:\Sagaya\11gDBhome

Am unable to start the listener, it throws error# TNS-12560 and TNS-00583.

$ lsnrctl start
---------------------------------------------------ERROR MESSAGE----------------------------
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 25-SEP-2011 00:01:50
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost.localdomain)(PORT=1521)))
TNS-12560: TNS:protocol adapter error
TNS-00583: Valid node checking: unable to parse configuration parameters
Listener failed to start. See the error message(s) above...
am using two database 1)bullet 2)karthy where bullet db is target and karthy is catalog and my LISTENER ENTRY is
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = karthy)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(global_name = karthy)
(SID_DESC =
(SID_NAME = bullet)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(global_name = bullet)
my TNS entry is
tns_bull
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(port=1521))
(CONNECT_DATA =
(server=dedicated)
(service_name=karthy)
kindly correct me where am gone wrong...

ksk wrote:
OS cmds
$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
Listener is connected so their is no error at that tailexcellent point.
using localhost/127.0.0.1 means that no remote client can ever connect to listener/DB
The upside is that your DB like mine can NEVER be hacked across the *NET!

Connection Error in OBIEE but nowhere else

I have a 10g database & a separate 11g database installed in separate Oracle Homes on a single machine. I've made the necessary entries to the tnsnames and listener.ora files to successfully connect to both of these 2 databases from SqlPlus, Toad and SQL Developer. However, when I'm in OBIEE 10.1.3.4 and attempt to import a table from either the 10g database or the 11g database using the OCI 10g/11g connection type, I get the error:
+'ORA-12154 TNS could not resolve the connect identifier specified'+
How is it that I can get this error only in OBIEE and not in SqlPlus, Toad and SQL Developer? Thanks.

Thanks for your replies. I'm running Vista 64 which I upgraded a few weeks ago from Vista Home Premium to Vista Ultimate. Both the 10g and 11g Oracle Clients are installed.
So I'm now seeing what I need to look into. On this 64 bit machine I have separate 64 bit & 32 bit ODBC Drivers. It seems that the upgrade to Vista Ultimate screwed up these odbc drivers as I get errors when trying to connect from EXCEL. ACCESS, OBIEE using ODBC. Also, in an unsuccessful attempt to connect a 32 bit app (SIMBA), I installed a 32 bit 11g 'Instant Client' and copied over files from the 32 bit ODBC Instant Client download. These generate connection errors too.
I guess the clearest task I have is to figure out how to restore / reinstall OCI Drivers and ODBC Drivers for both 64 bit and 32 bit. Focusing on the 11g database, do I simply uninstall and then reinstall the 11g client? Will that take care of both 64 & 32 bit odbc & OCI drivers?
This post now falls clearly outside of an OBIEE problem but any suggestions are appreciated.

Connection error / as sysdba

I cant connect from client as well as from the server. No error at the alert file . But my tnsnames log file show this error
Please give suggessions to trace where the problem is
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12540: TNS:internal limit restriction exceeded
TNS-12560: TNS:protocol adapter error
TNS-00510: Internal limit restriction exceeded
32-bit Windows Error: 8: Exec format error

What version of Oracle on what platform?
On UNIX one possible cause of the ORA-12540 error is having too low of a value for open files and another cause is having the OS parameter value for MAXUPROC set too low.
You appear to be on Windows based on "32-bit Windows Error: 8: Exec format error" so I suggest ckecking the installation manual for any required Windows privileges and settings and making sure these values were set as recommended. You might have too heavy a load with too large a memory demand for a 32 bit server to handle based on the following thread:
Re: Install Oracle Clusterware/RAC Windows x32bit or Windows 64bit ?
HTH -- Mark D Powell --

Re: Fatal NI connect error 12170.

I had a similiar issue today in my 11.2 RAC database alert.log. My errors were 12170 and 12535, and it is not a firewall issue. I found in my listener logs that IP referenced in the 12170 error message had connected to my listener earlier today. It appears to be a simple timeout issue.
Found MOS doc Fatal NI Connect Error 12170, 'TNS-12535: TNS:operation timed out' Reported in 11g Alert Log (Doc ID 1286376.1)

Hi,
Currently, I'm having these kind of problems in some databases in my developer environment.. I spent some time investigating, but I didn't find a solution yet. I read many documents(MOS), and try other things...
Fatal NI connect error 12537, connecting to:
(LOCAL=NO)
VERSION INFORMATION:
TNS for Linux: Version 11.2.0.3.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.3.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.3.0 - Production
Time: 18-SEP-2013 22:20:03
Tracing not turned on.
Tns error struct:
    ns main err code: 12537
TNS-12537: TNS:connection closed
    ns secondary err code: 12560
    nt main err code: 0
    nt secondary err code: 0
    nt OS err code: 0
opiodr aborting process unknown ospid (6536) as a result of ORA-609
The only thing that I notice that these errors star to raise after maintenance plan window at 22:00 PM
2013-09-18 22:00:00.253000 -03:00
Setting Resource Manager plan SCHEDULER[0x3109]:DEFAULT_MAINTENANCE_PLAN via scheduler window
Setting Resource Manager plan DEFAULT_MAINTENANCE_PLAN via parameter
Starting background process VKRM
Cheers
Legatti

Fatal NI connect error -12505

hi,
please this is urgent , does someone have any fixes/solutions for this problem.
i am trying to debug jsp's from jdeveloper and i am able to obtain a oracle connection from weblogic and this is the error i recieved.
thanx
sri
Fatal NI connect error 12505, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(PORT=1521)(HOST=192.168.100.16))(CONNECT_DATA=(SID=EOSD)(CID=(PROGRAM=C:\Program Files\Oracle\JDeveloper 3.2\bin\jdeveloper.exe)(HOST=E022447)(USER=sebh))))
VERSION INFORMATION:
TNS for 32-bit Windows: Version 8.1.6.0.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 8.1.6.0.0 - Production
Time: 23-FEB-2001 18:24:25
Tracing not turned on.
Tns error struct:
nr err code: 0
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

hi,
please this is urgent , does someone have any fixes/solutions for this problem.
i am trying to debug jsp's from jdeveloper and i am able to obtain a oracle connection from weblogic and this is the error i recieved.
thanx
sri
Fatal NI connect error 12505, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(PORT=1521)(HOST=192.168.100.16))(CONNECT_DATA=(SID=EOSD)(CID=(PROGRAM=C:\Program Files\Oracle\JDeveloper 3.2\bin\jdeveloper.exe)(HOST=E022447)(USER=sebh))))
VERSION INFORMATION:
TNS for 32-bit Windows: Version 8.1.6.0.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 8.1.6.0.0 - Production
Time: 23-FEB-2001 18:24:25
Tracing not turned on.
Tns error struct:
nr err code: 0
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 12170

Hi Everyone,
Recently my users have been complaining about lots of TNS-12535: TNS:operation timed out or TNS-00505: Operation timed out. In checking the alert log, there are tons of timeouts occuring per day.
We have an application that is written using .net. This application connects from the "outside world" passing through a DMZ to the database. In doing some reading, i have come to the conclusion that i may need to setup connection manager, but not absolutely sure. Here is the error that is thrown on the timeouts found in the alert.log file:
Fatal NI connect error 12170.
VERSION INFORMATION:
 TNS for 64-bit Windows: Version 11.1.0.6.0 - Production
 Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.1.0.6.0 - Production
 Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.1.0.6.0 - Production
Time: 16-FEB-2010 12:21:22
Tracing not turned on.
Tns error struct:
ns main err code: 12535
TNS-12535: TNS:operation timed out
ns secondary err code: 12560
nt main err code: 505
TNS-00505: Operation timed out
nt secondary err code: 60
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=192.xxx.x.xx)(PORT=2046)) (the host ip address is the webserver ip address)
What i'm really looking for is some direction as to how to help with this problem or has anyone out there experienced this before and found a fix. Any help will be welcomed. Thanks in advance.

oerr ora 12170
12170, 00000, "TNS:Connect timeout occurred"
// *Cause: The server shut down because connection establishment or
// communication with a client failed to complete within the allotted time
// interval. This may be a result of network or 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 or system,
// reconfigure one or all of the parameters SQLNET.INBOUND_CONNECT_TIMEOUT,
// SQLNET.SEND_TIMEOUT, SQLNET.RECV_TIMEOUT in sqlnet.ora to larger values.
// 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).
bcm@bcm-laptop:~/bcm_old$ oerr ora 12535
12535, 00000, "TNS:operation timed out"
// *Cause: The requested operation could not be completed within the time out
// period.
// *Action: Look at the documentation on the secondary errors for possible
// remedy. See SQLNET.LOG to find secondary error if not provided explicitly.
// Turn on tracing to gather more information.
bcm@bcm-laptop:~/bcm_old$ oerr ora 12560
12560, 00000, "TNS:protocol adapter error"
// *Cause: A generic protocol adapter error occurred.
// *Action: Check addresses used for proper protocol specification. Before
// reporting this error, look at the error stack and check for lower level
// transport errors. For further details, turn on tracing and reexecute the
// operation. Turn off tracing when the operation is complete.
bcm@bcm-laptop:~/bcm_old$ oerr ora 12505
12505, 00000, "TNS:listener does not currently know of SID given in connect descriptor"
// *Cause: The listener received a request to establish a connection to a
// database or other service. The connect descriptor received by the listener
// specified a SID for an instance (usually a database instance) that either
// has not yet dynamically registered with the listener or has not been
// statically configured for the listener. This may be a temporary condition
// such as after the listener has started, but before the database instance
// has registered with the listener.
// *Action:
// - Wait a moment and try to connect a second time.
// - Check which instances are currently known by the listener by executing:
// lsnrctl services <listener name>
// - Check that the SID parameter in the connect descriptor specifies
// an instance known by the listener.
// - Check for an event in the listener.log file.

Fatal NI connect error 12170 issue

Hi guys,
I posted this issue a while back, but go no response, so just hoping for some more feedback. In my alert log, I constantly receive this error:
Fatal NI connect error 12170.
VERSION INFORMATION:
     TNS for 64-bit Windows: Version 11.1.0.6.0 - Production
     Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.1.0.6.0 - Production
     Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.1.0.6.0 - Production
Time: 26-MAY-2010 13:05:04
Tracing not turned on.
Tns error struct:
ns main err code: 12535
TNS-12535: TNS:operation timed out
ns secondary err code: 12560
nt main err code: 505
TNS-00505: Operation timed out
nt secondary err code: 60
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.X.XX)(PORT=2504))
One of metalinks suggestions is to set DIAG_ADR_ENABLED =OFF. My question is, will that really help and what really is the effect to turning that parameter off????
I usually have 150 users connected at a time to the database, and i am hearing there are a lot of time outs out there in the field...Not sure how to go about diagnosing this......The users are connecting via webservers and dmz so also not sure if i should be looking into setting up Connection Manager. Any help will be appreciated...

Sorry I took forever to reply to this....I went out on vacation and just got back....I think this IP is associated with a Virtual Setup....
The weird thing is, alot of the systems which were accessing the database just fine are now receiving timeouts...Nothing has changed in the database setup...Right now I am getting this error from another application: "null     Io exception: Connection reset" Not sure how to tackle this situation.

OCI connect error reported to cause core dump

I use OCI in my developped library. Other developers use my library for their development purposes. Last night, the oracle server went down for patching, and a user reported a core dump that I recognized it is comming from my OCI section of library.
I do OCI initialization, select, execute a query, and cleanup.
Has there been any reports as for the case, when a connection is initialized, and the server goes down after successful initialization but before calls to execute a query or commit?
Any comment???
I have the error message below, and replace prepriotory info with xxxxxxx.
thanks,
--M
Fatal NI connect error 12541, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxxxxxx)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=xxxxxx)(CID=(PROGRAM=xxxxxx@fashing)(HOST=xxxxxx)(USER=xxxxx))))
VERSION INFORMATION:
TNS for Solaris: Version 10.1.0.4.0 - Production
TCP/IP NT Protocol Adapter for Solaris: Version 10.1.0.4.0 - Production
Time: 15-FEB-2007 15:49:09
Tracing not turned on.
Tns error struct:
ns main err code: 12541
TNS-12541: TNS:no listener
ns secondary err code: 12560
nt main err code: 511
TNS-00511: No listener

We have seen core dumps in system calls earlier and have tried to debug them. We did not have the exact same stack as you but the core used to show up a stack in _malloc.
As it turned out that we had out of bound array reads (used purify to detect this) and which resulted in this dump. So the stack shown in this case could be totally misleading and the real cause could be somewhere else.
Hope this helps.

Connectivity errors : TNS 15241

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