Oracle Fatal Ni Connect Error 12170 Tns-12535
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TNS for Linux: Version 10.2.0.4.0 - Production Oracle Bequeath NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production ns main err code: 12535 TCP/IP NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production fatal ni connect error 12170 firewall Time: 06-MAY-2009 18:54:41 Tracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS:operation tns-00505: operation timed out 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:
Nt Secondary Err Code: 110
0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=*.*.*.*)(PORT=3448))The same error message was repeating during whole day almost for every application server.I've finally found what was causing the problem. Our database is behind a firewall. Firewall has an "idle session timeout" value. If a connection remains idle for more than the "idle session timeout" value it drops the connections.Application developers usually configure their connection pools to remain ns secondary err code: 12606 alive for a long time, which is more than the "idle session timeout" value of the firewall. Not all the connections in the pool are used. Some stays idle. After sometime the firewall drops them and I get those operation timed out problems.Solution:Add the following line to the sqlnet.ora file on the server.SQLNET.EXPIRE_TIME=10In this configuration database will probe the application servers every 10 minutes to see if they are up. In fact this is a mechanism to determine stale connections by database. Because it sends packets to application servers every ten minutes, the connections are detected as active by firewalls and they are not broken. Posted by hemora at 11:47 Labels: LISTENER, Network, TNS 3 comments: Alum77 said... A great post.I had the same problem with an Oracle 12.1.0.10 and I have solved adding SQLNET.EXPIRE_TIME = 10 in the last line of file SQLNET.ORAThanks! 19 June 2015 at 07:59 Anonymous said... how to check firewall idle session timeout bcos I have same issue 15 July 2015 at 08:47 Kiquenet said... About odp.net ora-03113https://community.oracle.com/thread/3870860?start=0&tstart=0 17 December 2015 at 07:43 Post a Comment Newer
+ Solutions etc. Wednesday, August 20, 2014 Removing Fatal NI connect error 12170 from Database Alert Log In our one of the 11gR2 Production Database, there were so many entries w.r.tFatal NI connect error 12170 fatal ni connect error 12170 tns-12535 12606 + TNS-12535: TNS:operation timed out +TNS-00505: Operation timed out (with different ports), found in
Tns-12535: Tns:operation Timed Out
both RAC Instances Alert Log file. Problem: Fatal NI connect error 12170. VERSION INFORMATION: TNS for
Oracle 12c Fatal Ni Connect Error 12170
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 http://hemora.blogspot.com/2013/05/how-to-resolve-tns-12535-or-tns-00505.html Time: 20-AUG-2014 14:17:36 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=xxx.xxx.xxx.xxx)(PORT=44326)) Reason: The same error message was repeating during http://manishnashikkar.blogspot.com/2014/08/removing-fatal-ni-connect-error-12170.html whole day almost for every application server.I've finally found what was causing the problem. Our database is behind a firewall. Firewall has an "idle session timeout" value. If a connection remains idle for more than the "idle session timeout" value it drops the connections.Application developers usually configure their connection pools to remain alive for a long time, which is more than the "idle session timeout" value of the firewall. Not all the connections in the pool are used. Some stays idle. After sometime the firewall drops them and I get those operation timed out problems. Solution / Workaround: 1) Add the following line to the sqlnet.ora file on the server. SQLNET.EXPIRE_TIME=10In this configuration database will probe the application servers every 10 minutes to see if they are up. In fact this is a mechanism to determine stale connections by database. Because it sends packets to application servers every ten minutes, the connections are detected as active by firewalls and they are not broken. **In an installation that includes GRID, this parameter should be set in the RDBMS_HOME/network/admin/sqlnet.ora file. This would be the default location for sqlnet.ora file parameters referenced by the instance. 2) One way to minimize the impact is by using the par
CommunityOracle User Group CommunityTopliners CommunityOTN Speaker BureauJava CommunityError: You don't have JavaScript enabled. This tool uses JavaScript and much of it will not work correctly without it enabled. Please turn JavaScript back on and reload this page. Please enter a https://community.oracle.com/thread/2154858 title. You can not post a blank message. Please type your message and try again. More discussions in General Database Discussions All PlacesDatabaseGeneral Database Discussions This discussion is archived 8 Replies Latest https://dbatricksworld.com/tns-12535-tnsoperation-timed-out-and-tns-00505-operation-timed-out/ reply on Jan 7, 2011 4:46 AM by sb92075 Fatal NI connect error 12170 Salai.jayavelu Jan 3, 2011 11:10 PM Hi All, My production database alert log filled with the following fatal ni error, Please advise what could be the reason and solution. Fatal NI connect error 12170. VERSION INFORMATION: TNS for Linux: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production Time: 04-JAN-2011 07:30:30 Tracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS:operation fatal ni connect 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=137.93.97.43)(PORT=64267)) Best Regards, Salai I have the same question Show 0 Likes(0) 1298Views Tags: none (add) This content has been marked as final. Show 8 replies 1. Re: Fatal NI connect error 12170 sb92075 Jan 3, 2011 11:33 PM (in response to Salai.jayavelu) when did SQL*Net last work without error? what has changed? Like Show 0 Likes(0) Actions 2. Re: Fatal NI connect error 12170 Salai.jayavelu Jan 4, 2011 4:53 AM (in response to sb92075) I am geting any error while connect database via sqlplus.but i used to inspect the alert log once in a while so by the way i came to know this error. Like Show 0 Likes(0) Actions 3. Re: Fatal NI connect error 12170 sb92075 Jan 4, 2011 4:57 AM (in response to Salai.jayavelu) I am geting any error while connect database via sqlplusCOPY & PASTE whole session so we can see what you do & how Oracle responds. SQL*Net is not required to
2016 by Jignesh Jethwa My one of the client recently implemented firewall for security purpose, it was successful activity. When all the application server connected to database server, below mentioned error logged into an alert log file frequently. It was clear clue, firewall messed up with the client-server connections. It was the problem with Firewall "idle session timeout" value. If the client-server connection idle for more than defined value then it was forcefully dropped by firewall. Error log: Fatal NI connect error 12170. VERSION INFORMATION: TNS for Linux: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production Time: 13-APR-2016 19:26:50 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=192.xxx.xxx.xxx)(PORT=xxxx)) Work around for TNS-12535 and TNS-00505: We can remove or increase the firewall setting for maximum idle time. but it's not recommended, because who know how much time client-server connection going to be idle. So, append following parameter to RDBMS_HOME/network/admin/sqlnet.ora file on the database server. Resulting, database server check application server every