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

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

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

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ORA-12170:TNS:Connect timeout occurred

Hi, I am no longer able to log into SQL Plus. I get the error message above. I think the problem comes from my comtputer being renamed. Can someone help me?
Thanks.

ORA-12170: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).
1. Check whether database is up and running.
2. tnsping <databasename> and see whether you are able to ping the database in command prompt.
3. Check tnsnames are configured properly.
4. check DNS entry in your host file.
Regards,
Syed

ORA-12170:TNS connect timeout occured.

HI, i am getting this error when trying to connect, sqlplus, form builder in devsuite.10.1.0
can anyone help, plz........................
ORA-12170:TNS connect timeout occured.
with regards,
AJAZ.

In $ORAHOME/network/admin on the machine where you have Forms Builder installed, there is a file called tnsnames.ora
This file maps the 'tns name' which you are probably using in your connect string, to a specific TCP/IP port (and 'service identifier') on the database host.
A TNS connect timeout could occur because:
a) a firewall is preventing communcation between your machine and the database host/port in your tns definition
b) the TNS 'listener' on the database host at that port is hung
For my money, I'd be investigating (a) first.
It's worth investing time in learning about TNS. It will save you a lot of hassle.
regards,
David.
(Please mark this post as 'helpful' if it put you on the right track ... thanks!).

OO4O - Unable to make connection, ORA - 12170: TNS: Connect timeout occured

Hi,
I am trying to connect to the Database server from Vista client using code written in VB 6.0, The oracle client installed in Vista is 10.2g
I am using the below code to connect to the oracle database. I tried increasing the INBOUND_CONNECT_TIMEOUT parameter in the SQLNet.ora file, but didn't work.
Set gvobjOraSession = CreateObject(gvOraSession)
Set gvobjOraDatabase = gvobjOraSession.OpenDatabase(gvOraDBName, gvOraDefaultUser & "/" & gvOraDefaultPassword, vOraMode)
Thanks for the help in advance
Anand

Are you able to connect using the same information with sqlplus from the same client machine? 12170 is usually a basic client config issue rather than something specific to OO4O.
Greg

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

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

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

TNS:connection timeout error

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

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

How to solve this error :12170 TNS connection to timeout occured- req

Hi
I have 2 databases.They are source db and target db .i have created the database link source to target.The users report that when they try to connect the database source from target database using the database link they are getting the error
ORA-12170: TNS: CONNECTION TO TIMEOUT OCCURED
Note : Indpendently can be log on source database, target database from out of source db, But source db could'nt directly logon.
so how can i solve the error
pls reply urgently....
regs
RENGA

ORA-12170: TNS: CONNECTION TO TIMEOUT OCCUREDWhen was last time this worked?
What changed?
What OS name & version involved on each system?
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).Edited by: sb92075 on Oct 20, 2010 6:53 AM

Logging in on SQL Plus

I have yet been able to log in to SQL Plus. I just installed 8i Personal. I created a DB called "SCOTTSDB". After creating it, I wanted to login to SQL Plus. I tried user:system password:manager, user:internal password:oracle, and user:sys password:change_on_install. I just started an Oracle class at the university and wanted to run it at home for more practice. The login that I use at school is user:system password:manager. The host string is the name of the database right? For instance the name of the database that I created is like I said earlier "SCOTTSDB". Is that what I put in the host field? Any help is greatly appreciated. Thank you. scott

Hi I want to know, if Oracle 8i server can be installed in Win
98 properly? I tried and it got installed. But, I could not
connect to it from Oracle client. It is giving error ORA-
12541:TNS: no listener . How to start a listener in Win 98? Is
it possible or Oracle 8i server has to be installed in NT/
2000 ? I want to use the client and server in a single machine,
thats why I do not want to unistall my OS. Can u suggest
anything?
Thanks and regards,
-surajit

Cannot log in to SQL*Plus after initial login

Hi all,
I have an irritating problem that I am hoping that you can help with. I installed Oracle 10g on RedHat Linux ES 3. Everything seems to be working fine as long as I do not log out my oracle user. If I leave the user logged in everything works as expected. Once I log out, when I log back in I cannot access SQL*Plus normally.
I enter: sqlplus my_user/my_password
I get this:
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Sep 27 11:59:01 2005
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-01034: ORACLE not available
ORA-27123: unable to attach to shared memory segment
Linux Error: 22: Invalid argument
Additional information: 1
Additional information: 360457
But, if I enter it with the connection string: sqlplus my_user/my_password@ora1 then it works fine.
I get the same behavior through VNC. As long as I never log out of VNC but just close the session, logging in to SQL*Plus works as normal.
Any thoughts? My ORACLE_BASE, ORACLE_HOME, and ORACLE_SID seem to be correct.
Thanks,
Mike

Hi,
Kill the shared memory process and restart your database.
Regards,
Umair

Java.sql.SQLException: ORA-12535: TNS:operation timed out

Hello,
I am trying my first JDBC connection using a code sample called SingleConnection.
The code functions properly until an attempt to connect to the database (the main goal to the exercise, I know). I receive a java.sql.SQLException: ORA-12535: TNS:operation timed out error. The ConnectString is all good, and several different values have been tried. Any help would be appreciated.
Thanks,
Jeff

Hello,
My problem is solved. It was a firewall issue.
Cheers,
Jeff

Logging in to SQL Plus as DBUSER

I can log in to SQL Plus as username scott, password tiger. But I need to login as username DBUSER, password oracle. How can I do this?

In the same way as you did with username scott.
Or maybe there is no user DBUSER in your database.
check with...(as DBA)
select username from dba_users where username='DBUSER'

Listener is listening but when we use sql*plus ORA-12203

Hi all,
listener is listening but when we use sql*plus ORA-12203
we are trying to connect oracle database in VPN, all the configuration is ok, the listener is listening at db-server site with 1521
we can connect with tnsping, but when we connect with
sqlplus it not going through. any boidy has experienced this. any one can help?
Thanks in advance

TNSNAMES.ORA file is
it works when i try with serice name factory through LAN, then im disconnectinag at LAN and try through VPN, it doesnt go.
here is TNSNAMES.ORA copy .
Beq-local.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = beq.world)
(PROTOCOL = BEQ)
(PROGRAM = oracle73)
(ARGV0 = oracle73ORCL)
(ARGS = '(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))')
(CONNECT_DATA = (SID = ORCL)
Tcp-loopback.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = tcp.world)
(PROTOCOL = TCP)
(Host = 127.0.0.1)
(Port = 1521)
(CONNECT_DATA = (SID = ORCL)
Example1.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = tcp.world)
(PROTOCOL = TCP)
(Host = Production1)
(Port = 1521)
(CONNECT_DATA = (SID = SID1)
Example2.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = spx.world)
(PROTOCOL = SPX)
(Service = Server_lsnr)
(CONNECT_DATA = (SID = ORCL)
Example3.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = nmp.world)
(PROTOCOL = NMP)
(Server = FinanceServer1)
(Pipe = ORAPIPE)
(CONNECT_DATA = (SID = ORCL)
factory =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = tcp.world)
(PROTOCOL = TCP)
(Host = DBSERVER)
(Port = 1521)
(CONNECT_DATA = (SID = MYDATABASE)
factory1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = tcp.world)
(PROTOCOL = TCP)
(Host = 172.27.32.22)
(Port = 1521)
(CONNECT_DATA = (SID = MYDATABASE)
)

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-12564: TNS:connection refused

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

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

URGENT - cannot log in to SQL Plus on Oracle 8i

Hi, I have Oracle 8i (8.1.6.0.0) installed on windows 98.
I want to use the SQL Plus module, but I have trouble to login SQL plus, and I an get error message:
ORA-12560: TNS:Protocol adapter error
I supposed the default username and password as follows:
SYS/CHANGE_ON_INSTALL
SYSTEM/MANAGER
SCOTT/TIGER
Am I using the correct version or edition (which I also don't know which edition)? Does windows 98 supports SQL Plus?
I was told to set up a database by selecting database administration then follow by database configuration assistant (in order to use the SQL Plus, firstly a database have to set up). I'm not sure whether this is true? but inside the database administration I don't have the so call "database configuration assistant". Can someone please help me?
Thanks a lot in advance!

I hope you can help, I'm in the same boat as the others who cannot log on to the SQL* using Oracle Personal Edition 8
I'm running on 98, and everytime I try entering SYS as username & CHANGE_ON_INSTALL as password, or SYSTEM as username & MANAGER as password; I get:
ORA-01034: ORACLE not available
ORA-27101: Shared memory realm does not exist
I've been trying for a number of days, and have created databases using the Database config assistant, and everytime, it gives me the details as SYS CHANGE_ON_INSTALL etc, but it still doesn't let me log into SQL*
Any help would be gratefully received,
Patrick

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

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