ORA-12537: TNS Connectio Closed

Hi,
I have Production Database Servers. The name of Production Databse Server is CB02DB1 on which we are running Oracle 9i Release 2 (64 Bit) version. This database contain our ERP database and we want to restrict some users to access databse. For this Purpose I set the Parameters
TCP.VALIDNODE_CHECKING=YES
TCP.INVITED_NODES=(DBPROD)
in my sqlnet.ora file.
Now the Problem is that we have another server whose name is DBPROD. Which contain Oracle Financial Application with 8.1.7.0.0 version database. Oracle Financial is Intigrated with our ERP. when I given the name of DBPROD in
TCP.INVITED_NODES on CB0DB1 sqlnet.ora file and restart the listener.
Now when we connect to 9i databse from DBPROD machine it gives the error
ORA-12537: TNS Connectio Closed.
Any body Help me. It is Urgent.
Regards,

Let me clarify your question, it is not totally clear to me:
You have a database on node A.
You want to allow connections only from node B.
You try to achieve this with TCP.INVITED_NODES.
It does not work, B cannot connect to the database on A.
Did I understand your problem?
Try the following:
Write B's FULL name into TCP.INVITED_NODES - does it work then?
From A, try to ping B using the full name. Does it work?
Examine listener.log on node A. Can you find an explanation?
If you are still at loss, turn on tracing for the listener, try to connect and look at listener.log again.
Yours,
Laurenz Albe

Similar Messages

ORA-12537 TNS Connection closed after OAS 4.0.8.1 Installation

finally I was able to install and start OAS
on RH 6.1, but now I can not start Ora8i (with all patches) on my system. When I start svrmgrl, will get ora-12537 TNS Connection lost error.
Can someone please help!
Thanks

They said in the install doc that you can't use the same ORACLE_HOME for 8i and OAS 4.0.8...

Ora - 12537 tns connection closed

hai folks,
when i am connecting to database from toad software it throwhn error like this.
in which files i will update regarding tnsnames.ora file.
Regards
dba

You need to register the hosts which you want to give SQL*Plus/TOAD access as nodes.
From OAM, navigate to Site Map > Administration > System Configuration > Hosts > Register.
You may also comment "tcp.validnode_checking = yes" but this will allow any client to be able to connect to the Database.
For more details, please refer to Note: 291897.1 - 11.5.10 New Features : Managed SQL*Net Access from Hosts
https://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=291897.1

ORA-12537:TNS:TNS connection closed

i am getting this error while connecting to sqlplus. please suggest.

This error means:
ORA-12537: TNS:connection closed
Cause: "End of file" condition has been reached; partner has disconnected.
Action: None needed; this is an information message.
Which simply means your connection has ended. It is just an informative message, actually this doesn't mean an error arised.
Please provide further details on the environment where this error was produced as well as the Oracle and OS versions.
~ Madrid

TNS-12537: TNS:connection closed & ORA-609

hello all,
did any body see this error and solved it ?
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 (19995) as a result of ORA-609
if yes could you please explain to me how to fix it ?
note :
database Version 11.2.0.2.0
Sun Solaris
Edited by: 869111 on 24/02/2013 12:18 م
Edited by: 869111 on 24/02/2013 12:27 م

Check the following parameters in sqlnet.ora file:
tcp.invited_nodes
tcp.excluded_nodes

How to resolve TNS-12537: TNS:connection closed

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.
SQLNET.AUTHENTICATION_SERVICES = (NTS)
#SQLNET.AUTHENTICATION_SERVICES = (ALL)
tnsname.ora
===========
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
listener.ora
========
# listener.ora Network Configuration File: D:\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
while trying to connect into my local database(ORCL),I am receiving the following error:
C:\Documents and Settings\abcd>tnsping orcl
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 07-JUN-2
012 11:16:44
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
D:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = 127.0.0.1)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = ORCL)))
TNS-12537: TNS:connection closed
Thanks in advance.

Hi,
In your tnsnames.ora description ORCL.
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
) Did you create any database on localhost (HOST = 127.0.0.1)?
I think , if you want you must create database on localhost with IP 127.0.0.1
else if you want connect exists database with service name ORCL then you must change IP address
for ORCL description in tnsname.ora (for expale HOST= ORCLHOST or IP )
regards
Mahir M. Quluzade
www.mahir-quluzade.com

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

Receiving ORA-12537 TNS issue....what else can I do?

HPUX
10.2.0.3
I've started getting these errors on my database. However, nothing was being reported in my alert log. I did the research and found a bug that could cause this, with a patch. Also found that the same patch was in the 10.2.0.3 patch set.
So I updated to that patch last night. STILL getting the same errors...but now I'm getting new errors...
Wed Apr 1 09:00:14 2009
Process m000 died, see its trace file
Wed Apr 1 09:00:14 2009
ksvcreate: Process(m000) creation failed
Wed Apr 1 09:00:33 2009
Process J000 died, see its trace file
Wed Apr 1 09:00:33 2009
kkjcre1p: unable to spawn jobq slave process
Wed Apr 1 09:00:33 2009
Errors in file /opt/oracle/admin/peregrine/bdump/peregrine_cjq0_11720.trc:
So I open up the trace file...
only contents...
/opt/oracle/admin/peregrine/bdump/peregrine_cjq0_11720.trc
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
ORACLE_HOME = /opt/oracle/product/10.2.0/db_1
System name: HP-UX
Node name: vscdsh01
Release: B.11.23
Version: U
Machine: ia64
Instance name: peregrine
Redo thread mounted by this instance: 1
Oracle process number: 10
Unix process pid: 11720, image: oracle@vscdsh01 (CJQ0)
*** SERVICE NAME:(SYS$BACKGROUND) 2009-04-01 09:00:01.694
*** SESSION ID:(382.1) 2009-04-01 09:00:01.694
*** 2009-04-01 09:00:01.694
Process J000 is dead (pid=1288, state=3):
*** 2009-04-01 09:00:07.844
Process J000 is dead (pid=1673, state=3):
*** 2009-04-01 09:00:33.940
Process J000 is dead (pid=2201, state=3):
I looked up that string of text...googled it...came back with nothing.
How else can I investigate this ORA-12537 error? This is my production db, and it's down.
I checked the memory that one article indicated could be of issue...memory is fine.
It also mentioned versions of listener, I'm looking into that right now on how to see what version and how to update it. I'm also going to open a SR with Oracle.
Thanks.

Ok...tried to log back in (no other actions taken) and it was a normal log in...that's really weird.
The db was never down...it's functional. Just some folks can't get to it. (not the same people all the time..)
show sga:
SQL> show sga
Total System Global Area 5083496448 bytes
Fixed Size 2052400 bytes
Variable Size 436211408 bytes
Database Buffers 4630511616 bytes
Redo Buffers 14721024 bytes
SQL> show parameter proces
NAME TYPE VALUE
aq_tm_processes integer 0
db_writer_processes integer 1
gcs_server_processes integer 0
job_queue_processes integer 10
log_archive_max_processes integer 30
processes integer 350
SQL> show parameter transaction
NAME TYPE VALUE
transactions integer 429
transactions_per_rollback_segment integer 5
excerpt from print_manifest
Kernel Configuration
The following drivers or parameters are configured into your system's
kernel. After installing HP-UX, use the sam(1m) command to configure
the following items into the kernel:
dbc_max_pct 10
vps_ceiling 64
shmmni 512
semmnu 4096
semmns 8192
semmni 4096
ninode 34816
ncsize 34816
msgseg 32767
msgmni 4096
msgtql 5000
cmc_plat_poll 15
nstrpty 60
max_thread_proc 1200
maxssiz 134217728
maxssiz_64bit 1073741824
maxuprc 3687
msgmap 4098

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

ORA-12537

Hi friends,
I have a 3rd party application that is running on Oracle 10g DB (Aix 5L). It has been running smoothly for 1 month now.
But suddenly today it hit this ORA-12537?
Which of the following is near to this scenario? or do you have other ideas?
What to do with ORA-12537: TNS: connection closed error
The ORA-12537 is an information message and means that the connection has been closed. This can be caused by a number of reasons:
1. Database is shut down (maybe for nightly backup), but connection to database was kept by client.
2. A time-out occurred on the client-connection.
3. When firewall closes idle connections.
3. A configuration problem in sqlnet.ora or listener.ora.
4. You have a path name that is too long for the Oracle TNS client on windows. (MetaLink Note:263489.1 )
This issue is due to the connection string being large enough that the connection packet is being split into two packets and then sent to the listener. There are several workarounds for the issue.
a. Install the exe in a shorter named directory.
b. Modify the TNS Names entry so that it is shorter.
c. Replace domain names with IP Addresses if that shortens and vice versa.
d. Remove any parameters from the entry that are not needed.
e. Patch the Database Listener to the most recent version.
5. Oracle security is enables (for example in Oracle Apps). Solution either:
a) Edit sqlnet.ora file and add your client-ip to tcp.invited_nodes.
b) Remove secutity by editing sqlnet.ora and comment out parameter tcp.validnode_checking = yes by adding # at the beginning of the line.***Courtesy of Oradev.Com
What do you mean by #1 "kept silent"?
All of the above will fail at first day of implem, but its been running for 1 month now :(
Thanks a lot
Ms K
Edited by: ytterp2009 on Jun 4, 2010 6:44 PM
Edited by: ytterp2009 on Jun 4, 2010 6:50 PM changing "dear" to "friend"

ytterp2009 wrote:
Thanks everyone, God Bless :)Just a piece of advice on the side ...
First, I'll be the first to admit that your English is far better than my <whatever your native language is>. But as you strive to improve your English, you might want to be aware of bit of implicit meaning that probably won't be found in your dictionary.
To native English speakers, the term "dear" when addressing someone is usually reserved for someone with which you have some romantic relationship. It's a term I would use to address my wife, not a friend. Not even a very close friend. Certainly not a bunch of strangers. It's a term of endearment, not friendship or collegiality.
Actually, this is one of those tricky things about usage in English. In traditional formal writing, opening a letter with the term "Dear Fred" (using the persons name) is standard practice but seems to be falling out of usage except in business letters. But to address someone as "Dear" without their name gets into the perception of "endearment" vs. "collegiality".
Please take this comment in the spirit of trying to help improve communications, not criticism. No offense was take by your repeated use of "dear", and no apology is needed.
Edited by: EdStevens on Jun 4, 2010 7:18 AM

How do i troubleshoot ORA-12537

Hi Friends,
I got ora-12537 where i sqlplus system/manager@vis from my client windows xp
to my database server linux oracle 9i .
C:\Documents and Settings\user01>sqlplus system/manager@vis
SQL*Plus: Release 10.2.0.1.0 - Production on Wed May 7 19:27:39 2008
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-12537: TNS:connection closed
My clients TNSNAMES.ORA
======================
VIS =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = vision.abc.com)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = VIS)
(INSTANCE_NAME = VIS)
My Clients SQLNET.ORA
=======================
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
My Server's LISTENER.ORA
=======================
VIS =
(ADDRESS_LIST =
(ADDRESS= (PROTOCOL= IPC)(KEY= EXTPROCVIS))
(ADDRESS= (PROTOCOL= TCP)(Host=vision.abc.com)(Port= 1521))
SID_LIST_VIS =
(SID_LIST =
(SID_DESC =
(ORACLE_HOME= /u02/oracle/visdb/9.2.0)
(SID_NAME = VIS)
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u02/oracle/visdb/9.2.0)
(PROGRAM = extproc)
STARTUP_WAIT_TIME_VIS = 0
CONNECT_TIMEOUT_VIS = 10
TRACE_LEVEL_VIS = OFF
LOG_DIRECTORY_VIS = /u02/oracle/visdb/9.2.0/network/admin
LOG_FILE_VIS = VIS
TRACE_DIRECTORY_VIS = /u02/oracle/visdb/9.2.0/network/admin
TRACE_FILE_VIS = VIS
ADMIN_RESTRICTIONS_VIS = OFF
My server's SQLNET.ORA
======================
NAMES.DIRECTORY_PATH=(TNSNAMES, ONAMES, HOSTNAME)
SQLNET.EXPIRE_TIME= 10
tcp.validnode_checking = yes
tcp.invited_nodes=(vision.abc.com)
IFILE=/u02/oracle/visdb/9.2.0/network/admin/VIS_vision/sqlnet_ifile.ora
Please help.....thanks a lot

Hi,
Thanks, I commented it and it worked :)
But EBS R11 put it by default I wonder if It has some
effect from Oracle Applications. Anyways I have to
return it back if it affects the applications.It is enabled for security reasons in Oracle Apps 11.5.10. It will not disrupt the running of the application, but security is reduced because you are now allowing all cliens to connect. To maintain the security, you need to add client to the list instead of comment it out.
Do you know what FND_SQLNET_ACCESS is set to?

SQLPLUS TNS Connection Closed

Hi,
Each time I attempt to use SQLPLUS to connect to my db, I receive:
ERROR:
ORA-12537: TNS:connection closed
The listener.log contains these entries:
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred
06-JAN-2012 17:09:51 * <unknown connect data> * (ADDRESS=(PROTOCOL=tcp)(HOST=172.19.1.54)(PORT=50067)) * establish * <unknown sid> * 12525
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred
06-JAN-2012 17:10:23 * ping * 0
06-JAN-2012 17:10:23 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=SYSTEM))(COMMAND=status)(ARGUMENTS=64)(SERVICE=(ADDRESS=(PROTOCOL=TCP)(HOST=SERVER01.domain.local)(PORT=1521)))(VERSION=169870336)) * status * 0
06-JAN-2012 17:10:54 * <unknown connect data> * (ADDRESS=(PROTOCOL=tcp)(HOST=172.19.1.54)(PORT=50074)) * establish * <unknown sid> * 12525
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred
Earlier today, I could log in without problems. I had been experiencing this error on my first attempt to login, but if I immediately attempted a second connection, would be logged in. Now, I cannot connect. Nothing has changed otherwise. Does anyone have any idea what may be causing this? I am using the sql plus command prompt, on a Windows Server 2008 R2 Service Pack 1. Oracle 10.2.0.4 Production, 64-bit.
Thank you,
Jesse

jesserose wrote:
Hi,
Each time I attempt to use SQLPLUS to connect to my db, I receive:
ERROR:
ORA-12537: TNS:connection closed
The listener.log contains these entries:
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred
06-JAN-2012 17:09:51 * <unknown connect data> * (ADDRESS=(PROTOCOL=tcp)(HOST=172.19.1.54)(PORT=50067)) * establish * <unknown sid> * 12525
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred
06-JAN-2012 17:10:23 * ping * 0
06-JAN-2012 17:10:23 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=SYSTEM))(COMMAND=status)(ARGUMENTS=64)(SERVICE=(ADDRESS=(PROTOCOL=TCP)(HOST=SERVER01.domain.local)(PORT=1521)))(VERSION=169870336)) * status * 0
06-JAN-2012 17:10:54 * <unknown connect data> * (ADDRESS=(PROTOCOL=tcp)(HOST=172.19.1.54)(PORT=50074)) * establish * <unknown sid> * 12525
TNS-12525: TNS:listener has not received client's request in time allowed
TNS-12535: TNS:operation timed out
TNS-12606: TNS: Application timeout occurred
Earlier today, I could log in without problems. I had been experiencing this error on my first attempt to login, but if I immediately attempted a second connection, would be logged in. Now, I cannot connect. Nothing has changed otherwise. Does anyone have any idea what may be causing this? I am using the sql plus command prompt, on a Windows Server 2008 R2 Service Pack 1. Oracle 10.2.0.4 Production, 64-bit.
Thank you,
JesseIt could be a mal-formed connection request due to bad tnsnames entry.
what is actual & complete connection string being issued?
post content of tnsnames.ora
post content of sqlnet.ora file if one exists
post results from following OS commands run on DB Server system
lsnrctl status
lsnrctl service

ORA-12537 error in Oracle 8.1.7

We have an Oracle Application Server and an Oracle DB Cluster communicating over a Firewall between two VLANS.
Sometimes we get the error ORA-12537 "TNS: connection closed". The oracle documentation says this is just an
information message and no action is required but we have to restart all oracle processes on the application server.
Can anyone tell me what's the cause of our problem and how can I avoid restarting the oracle processes
on the application server when the error occurs?

Make sure you set the NLS_LANG environment variable properly on the WebLogic
server environment. Search this newsgroup for NLS_LANG.
hth
sree
"Sathu" <[email protected]> wrote in message
news:3c4699f6$[email protected]..
Hi,
We are using jDrivers of Weblogic to connect to oracle , when we did
testing on Oracle 8.1.7 with UTF8 for the Update Statements we got the error
message ORA-01461 can bind a LONG value only for insert into a LONG column.
All the columns in the table are varchar2. Any Solution to this problem?
Thanks

Error ORA-12537 when trying to connect

I'm getting an 'ORA-12537 TNS:connection closed' error when connecting to the database (8.1.7 on Win2k). The problem persists even after restarting both, listener and database-service. I cannot even connect as SYSDBA. How can i solve this problem?

Seems like it may be a problem with Oracle on Windows and Firewalls. Check that your firewall software/hardware is able to proccess SQL*NET requests.
Try to open all the ports based on IP address and see if that works.

Urgent: -ORA-609- TNS 12537

Hi All ,
I am getting followings error in alert log.
Fatal NI connect error 12537, connecting to:
(LOCAL=NO)
nt main err code: 0
VERSION INFORMATION:
     TNS for Solaris: Version 11.1.0.7.0 - Production
     Oracle Bequeath NT Protocol Adapter for Solaris: Version 11.1.0.7.0 - Production
     TCP/IP NT Protocol Adapter for Solaris: Version 11.1.0.7.0 - Production
Mon Aug 08 00:01:00 2011
nt secondary err code: 0
Time: 08-AUG-2011 00:01:00
nt OS err code: 0
Tracing not turned on.
ORA-609 : opiodr aborting process unknown ospid (5496_1)
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
Mon Aug 08 00:01:08 2011
ORA-609 : opiodr aborting process unknown ospid (5541_1)
Mon Aug 08 00:01:24 2011

Hi,
id 609.1 in support say to add
Sqlnet.ora: SQLNET.INBOUND_CONNECT_TIMEOUT=120
Listener.ora: INBOUND_CONNECT_TIMEOUT_listener_name=120
However, I am not using any Sqlnet.ora
Does these error are related to GRID Control ?
because I am using separate server for grid control and trying to add production server to grid.
Also can anyone help me how to add host (prod server) to grid control (grid server)
Thanks

ORA-12537: TNS Connectio Closed

Similar Messages

Maybe you are looking for