Fatal NI connect error 12170 and TNS-12535: TNS:operation timed out

We are getting intermittently following error.
TNS for Solaris: Version 10.2.0.3.0 - Production
Oracle Bequeath NT Protocol Adapter for Solaris: Version 10.2.0.3.0 - Production
TCP/IP NT Protocol Adapter for Solaris: Version 10.2.0.3.0 - Production
Time: 26-FEB-2008 07:17:25
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
sql net ora file
NAMES.DIRECTORY_PATH= (TNSNAMES)
# NAMES.DEFAULT_DOMAIN = world
SQLNET.EXPIRE_TIME = 10
Out of 10,000 sucessful connections, some 10 connections are getting the 12170 and 12535 error. It is due to firewall connection time out ?
Appreciate advanced help
Prasad

Hi ,
Even I am facing similar issue. Please let me know if you have any resolutions for this

Similar Messages

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.

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

IPhone/iPad connection error after first login ok: The request timed out. (-1001)

Hi
I have installed SAP 9.0 PL 12, DI API all version, Integration Component of the SAP 9.0 PL12.
On my iPhone I have the 1.10.1 version of the app SAP.
I followed the directions provided in the note (also in 1602674) and in the forum, but nothing.
I start my PC (server with integration installed), do all the tests possible dall'integration admin and I always correct results.
Start app from my iphone, it connects to my DB but.... after a few minutes I get the error
"Connection Failed - The request timed out. (-1001)"
and then throws me out of the db.
If I try to reconnect, re-entering the password I have always the same error.
To reconnect, I have to restart the PC and the situation repeats itself (is the first logon, then I get the error and I can not reconnect).
Can anyone help me?
THANKS
NL

H Thusar
Update: I only changed the startup type of the service DI Proxy, Event, Integration, and instead of putting 'Automatic' I selected 'Automatic (Delayed Start)'.
I rebooted the server and I was able to connect the iPhone via app to my DB: I was about an hour, I created BP, made changes, displayed report.
I then did the logoff.
I tried to reconnect but nothing is returned the error 'Connection Failed - The request timed out. (-1001)'.
Even after restarting the server again, the app connects after about two minutes I get the error 'Connection Failed - The request timed out. (-1001)' and is no longer relates only after you restart the server.
Help
NL

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.

Inbound connection timed out and TNS:operation timed out in Oracle 11g

Hello All,
We are getting the below messages in alert log since yesterday... And we could not see any other messages other than this...Users also complaining slow response from DB,
Could any one please help me to resolve this ...? I believe in 11g inbound connection time out is deprecated ..isn't it ...?
VERSION INFORMATION:
TNS for Linux: Version 11.2.0.2.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
Time: 18-NOV-2011 01:54:50
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: 110
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.21.0.159)(PORT=4789))
Fri Nov 18 09:43:04 2011
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for Linux: Version 11.2.0.2.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
Time: 18-NOV-2011 09:43:04
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: (ADDRESS=(PROTOCOL=tcp)(HOST=10.25.1.65)(PORT=50839))
WARNING: inbound connection timed out (ORA-3136)

889828 wrote:
Hello All,
We are getting the below messages in alert log since yesterday... And we could not see any other messages other than this...Users also complaining slow response from DB,
Could any one please help me to resolve this ...? I believe in 11g inbound connection time out is deprecated ..isn't it ...?
VERSION INFORMATION:
TNS for Linux: Version 11.2.0.2.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
Time: 18-NOV-2011 01:54:50
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: 110
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.21.0.159)(PORT=4789))
Fri Nov 18 09:43:04 2011
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for Linux: Version 11.2.0.2.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
Time: 18-NOV-2011 09:43:04
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: (ADDRESS=(PROTOCOL=tcp)(HOST=10.25.1.65)(PORT=50839))
WARNING: inbound connection timed out (ORA-3136)The most common cause for this error is a firewall between clint & DB Server;
which allows packets on port #1521, but does not allow DB Server to use new high random port.

Got error in sqlnet.log TNS-12535: TNS:operation timed out

connection not getting from client machine to database. got error in sqlnet.log
Fatal NI connect error 12170.
VERSION INFORMATION:
     TNS for Linux: Version 10.2.0.4.0 - Production
     Oracle Bequeath NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production
Time: 15-MAR-2010 17:09:30
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: (ADDRESS=(PROTOCOL=tcp)(HOST=172.20.237.14)(PORT=1879))
Fatal NI connect error 12170.
VERSION INFORMATION:
     TNS for Linux: Version 10.2.0.4.0 - Production
     Oracle Bequeath NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production
     TCP/IP NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production
Time: 15-MAR-2010 17:53:26
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: (ADDRESS=(PROTOCOL=tcp)(HOST=172.20.237.14)(PORT=2045))
even no any parameter set in sqlnet.ora

hi,
Please check the connectivity from server to client.
And also check whether the tnsnames.ora file has the TNS entry of the DB server which you are trying to connect.
Then TNSPING the server with tns name.
If this also doesnt work try commenting all lines in sqlnet.ora file on server.
Check the listener status also on the server.

TNS-12535: TNS:operation timed out with ORA-609

Hi All,
In 11gR2 Database on Linux ,I am getting the below error for one client only -
This is a c++ application which is accessing database from different linux machines with Oracle Client installed on each machine(OCI).
C++ application is working fine from all linux machines except the one which in mentioned in the below alert log error.
But from this client I can connect to the database using sql*client -
The Error is
====================================
Fatal NI connect error 12170.
   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: 07-AUG-2013 18:19:51
   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: (ADDRESS=(PROTOCOL=tcp)(HOST=xx.xx.xxx.55)(PORT=57181))
Wed Aug 07 18:22:02 2013
piodr aborting process unknown ospid (29122) as a result of ORA-609
Port Number in client address is keep changing.
====================================
C++ application captures below error messages on client -
Error - ORA-03135: connection lost con
Error - ORA-12636: Packet send failed
=======================================
I have tried to increase the
SQLNET.INBOUND_CONNECT_TIMEOUT and
Listener.ora: INBOUND_CONNECT_TIMEOUT_listener_name
But it is not working.
I have also tried the steps mentioned in the document id Doc ID 119706.1 and Doc ID 1116960.1 but no luck.
Please suggest any other things that I can check.
Thanks,
Abhijit

please, refer to:
https://forums.oracle.com/thread/2434970

TNS-12535: TNS:operation timed out & TNS-00505: Operation timed out problem

Hi all,
I am getting below error frequently on different ports + (55733 55758 56110 59365 62950 63573 63790 63992) + and connecting automatically after some period.
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for Linux: Version 11.2.0.2.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
Time: 18-MAR-2011 09:16:27
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: 110
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=localhost.localdomain.com)(+ PORT=55733 +))
Please help me why this happening frequently and conencting automatically in this regard,
Thanks,

Hi Sunny,
Yeah connection is there but getting disconnect frequently and reconnecting again....
I was trying to make that string as italic so put the '+' symbol, and doesn't have + symbol in original file.
Please help
Edited by: user7280060 on Mar 24, 2011 1:55 AM

Listener overloaded or High load .?..ORA-12535: TNS:operation timed out

We have an OLTP db server with oracle 11g(11.1.0.7) installed on Linux 64bit OS.
Client : Dotnet application running on win2003 server
oracle client version on webServer 9.2.0.4
Work load on system is
Avg Executions Per Sec 1273.35
Avg Executions Per Txn 42.1
Avg Response Time Per Txn (secs) .13
Avg User Transaction Per Sec 30.4
Avg Concurrent Sessions on server 350 processes 600
memory_target 13gb
we are experiencing "ORA-12535: TNS:operation timed out" while users access the application from webserver.per day around 200 errors.
To get rid of the above error we set SQLNET.INBOUND_CONNECT_TIMEOUT=0 in server side sqlnet.ora and
in Listener.ora inbound_connect_timeout=120 but of no use, even we observed for few days with inbound_connect_timeout=0.
There is Only one listener configured on server.
The similar set up with lesser workload working fine without any errors.
Please let me know your thoughts....
--Pandey
Edited by: user12204025 on Feb 10, 2010 8:14 AM
Edited by: user12204025 on Feb 12, 2010 2:52 PM

But I am seeing this errors in listener alert file.
<msg time='2010-02-15T15:55:37.734-06:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='hostname.domainname'
host_addr='127.0.0.1'>
<txt>15-FEB-2010 15:55:37 * 12502
</txt>
</msg>
<msg time='2010-02-15T15:55:37.734-06:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='hostname.domainname'
host_addr='127.0.0.1'>
<txt>TNS-12502: TNS:listener received no CONNECT_DATA from client
</txt>
</msg>
and in alert log file below entry...
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for Linux: Version 11.1.0.7.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.1.0.7.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.1.0.7.0 - Production
Time: 15-FEB-2010 02:46:21
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: 110
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=gatewayip)(PORT=4804))
please let me know your thoughts.....

DB Connect error: ORA-12535: TNS:operation timed out

Hi,
I am trying to connect to a external oracle database from SAP.
I entered the TNS entry of the external DB in the TNSNAMES.ORA and configured it in the table DBCON.
But i am not able to connect to the external database. It is throwing the error
"sql error 12.535 ; occured:ORA-12535: TNS:operation timed out"
But i was able to connect the database from my system through TNSPING and also from TOAD.
Do i need to configure any parameter in LISTENER.ORA in SAP or in the external database?

Hi,
Thanks for the reply.
The note which you specified was with BI objects. But i am trying to connect from SAP R/3 to a remote Oracle database.
I got connected to the remote Oracle database for an hour and it got disconnected by saying "TNS operation timed out".
The CONNECT_TIMEOUT parameter in LISTERER.ORA of the remote Oracle database is missing.
Will this may be the cause for the "TNS operation timed out".

"ORA-12535:TNS:operation timed out" error

hi,
I want to connect to my oracle server.If I try to connect my client means"ORA-12535:TNS:operation timed out" error is shown.What should i do to the rectify this problem.Pls give me a solution.
Thanks in advance.
-reg
Lakshman.

We are using wiondows XP and oracle 8i.
I am able to ping the host where the database resides.
this problem occurs only when we try to connect this server form the client.I able to connect other servers without any problem.
I able to establish local connections.
I am trying tnsping database service.
client and the server are in same LAN only.
Pls give me a solution.
Thanks in advance.
-regs,
Lakshman.

ORA-12535 TNS:operation timed out from SQLPlus and Enterprise Manager Conso

I keep getting a ORA-12535 TNS:operation timed out error, when I try to start my Database.
I know its a timeout error, but I would like to know what is timing out and why. All I want is the database its self to run to allow me to connect to it via SQLPlus and JDBC.
Is there any information on what the following services do and which ones I need to have running to use the database.
Oracle OLAP 9.0.101
Oracle OLAP Agent
Oracle oraHome90Agent
Oracle oraHome90ClientCache
Oracle OraHome90PagingServer
OracleOra90SNMPPeerEncapsulator
OracleOra90SNMPPeerMasterAgent
OracleOra90STNSListener
Thanks for any help Tony

Either reconfigure CONNECT_TIMEOUT to be 0, which means wait indefinitely, or reconfigure CONNECT_TIMEOUT to be some higher value. Or, if the timeout is unacceptably long, turn on tracing for further information.
If you have oracle metalink, then read the following note;
Note:119706.1 - Troubleshooting Guide TNS-12535 & ORA-12535 Errors

TNS-12560: TNS:protocol adapter error, ORA-12535: TNS:operation timed out

I installed Oracle 9i (9.2.0.1.0) on a Windows XP machine (the machine is in a domain). There were no errors during the instalation, but I have problems connecting from the same machine using the sid. Here are some examples from a command promt:
D:\>tnsping orcl9i
TNS Ping Utility for 32-bit Windows: Version 9.2.0.1.0 - Production on 31-OCT-20
08 17:43:22
Copyright (c) 1997 Oracle Corporation. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = timisoara01)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = orcl9i)))
TNS-12560: TNS:protocol adapter error
D:\>sqlplus "sys/pass@orcl9i as sysdba"
SQL*Plus: Release 9.2.0.1.0 - Production on Fri Oct 31 17:54:54 2008
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
ERROR:
ORA-12535: TNS:operation timed out
Enter user-name:If I don't use the sid I can connect:
D:\>sqlplus "sys/pass as sysdba"
SQL*Plus: Release 9.2.0.1.0 - Production on Fri Oct 31 18:05:46 2008
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production
SQL>If I go to services I see that the service is running: OracleServiceORCL9I Started.
Thx.

Yes, the XP firewall is running. During the Oracle instalation it poped up twice, but I selected 'Unblock'. I can't turn it off because it is running using the domain settings, but I can add exceptions (programs or ports). Port 1521, tnsping or sqlplus are not blocked and there is an option 'Display a notification when Windows Firewall blocks a program' witch is checked.

Fatal NI connect error 12170 and TNS-12535: TNS:operation timed out

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