Fatal Ni Connect Error 12535
Contents |
+ Solutions etc. Wednesday, August 20, 2014 Removing Fatal NI connect error 12170 from Database Alert Log In our one of the 11gR2 fatal ni connect error 12170 ns main err code 12535 Production Database, there were so many entries w.r.tFatal NI connect error
Ns Main Err Code 12535 Ns Secondary Err Code 12606
12170 + TNS-12535: TNS:operation timed out +TNS-00505: Operation timed out (with different ports), found in both RAC
Fatal Ni Connect Error 12170 Firewall
Instances Alert Log file. Problem: Fatal NI connect error 12170. VERSION INFORMATION: TNS for Linux: Version 11.2.0.3.0 - Production
Nt Secondary Err Code: 110
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: 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 fatal ni connect error 12637 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 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 thi
SQL TuningSecurityOracle UNIXOracle LinuxMonitoringRemote supportRemote plansRemote servicesApplication Server ApplicationsOracle FormsOracle PortalApp UpgradesSQL ServerOracle ConceptsSoftware SupportRemote Support Development Implementation Consulting StaffConsulting PricesHelp Wanted! oracle 12c fatal ni connect error 12170 Oracle PostersOracle Books Oracle Scripts Ion Excel-DB Don Burleson Blog tns-12535: tns:operation timed out
fatal ni connect error 12170 ns main err code 12535 oracle 11g Oracle Database Tips by Burleson Consulting November 5, 2015 Question: Below error getting in alert log file every day, but database is working fineWhat are the http://manishnashikkar.blogspot.com/2014/08/removing-fatal-ni-connect-error-12170.html reason for this Fatal ni connect error 12170? Fatal NI connect error 12170. VERSION INFORMATION: TNS for 64-bit Windows: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Time: 28-MAY-2012 19:20:02 Tracing not turned http://www.dba-oracle.com/t_fatal_ni_connect_error_12170.htm on. Tns error struct: ns main err code: 12535 TNS-12535: TNS:operation timed out ns secondary err code: 12560 Answer: The fatal ni connect error 12170 is related to the ORA-12170 error: ORA-12170: TNS:Connect timeout occurredCause: The client failed to establish a connection and complete authentication in the time specified by the SQLNET.INBOUND_CONNECT_TIMEOUT parameter in the sqlnet.ora file. This error may be a result of network or system delays, or it may indicate that a malicious client is trying to cause a denial-of-service attack on the database server. 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_TIMEnetwork, oracle Applies to: Oracle Net Services - Version: 11.1.0.6 to 11.2.0.2 - Release: 11.1 to 11.2 Oracle Server - Enterprise http://www.vmcd.org/2011/12/problem-fatal-ni-connect-error-12170-tns-12535-tnsoperation-timed-out-reported-in-11g-alert-log/ Edition - Version: 11.1.0.6 to 11.2.0.2 [Release: 11.1 to 11.2] Information in this document applies to any platform. TNS-12170, ORA-12170, TNS-12535, TNS-00505 alert.log Symptoms nt secondary err code: http://dbafoiz.blogspot.com/2015/03/12170-tns-12535tns-00505-operation.html 110 Monitoring of the 11g database Alert log(s) may show frequent timeout related messages such as: - On Oracle Solaris: *********************************************************************** Fatal NI connect error 12170. VERSION fatal ni INFORMATION: TNS for Solaris: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for Solaris: Version 11.2.0.1.0 - Production TCP/IP NT Protocol Adapter for Solaris: Version 11.2.0.1.0 - Production Time: 22-JAN-2011 21:48:23 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 fatal ni connect code: 505 TNS-00505: Operation timed out nt secondary err code: 145 nt OS err code: 0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.159.34.117)(PORT=1092)) ------ The "nt secondary err code" will be different based on the operating system. Linux x86 or Linux x86-64: "nt secondary err code: 110" HP-UX Server: "nt secondary err code: 238" AIX: "nt secondary err code: 78" Changes No change are necessary, but may have recently upgraded the database to 11g release 1 or higher, or installed a new Oracle11g database. Note: Prior to 11gR1 these same ‘Fatal NI connect error 12170' are written to the sqlnet.log Cause These time out related messages are mostly informational in nature. The messages indicate the specified client connection (identified by the ‘Client address:' details) has experienced a time out. The ‘nt secondary err code' identifies the underlying network transport, such as (TCP/IP) timeout limits after a client has abnormally terminated the database connection. The ‘nt secondary err code' translates to underlying network transport timeouts for the following Oper
this Document Symptoms Changes Cause Solution References APPLIES TO: Oracle Net Services - Version 11.2.0.3 to 12.1.0.1 [Release 11.2 to 12.1] Information in this document applies to any platform. SYMPTOMS The following error is reported in the database alert log. ***Note the "Client address" is posted within the error stack in this case. Fatal NI connect error 12170. VERSION INFORMATION: TNS for 64-bit Windows: Version 11.2.0.3.0 - Production Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.3.0 - Production Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.3.0 - Production Time: 22-FEB-2014 12:45:09 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=121.23.142.141)(PORT=45679)) The PORT field here is the ephemeral port assigned to the client for this connection. This does not correspond to the listener port. CHANGES No changes are necessary, but may have recently upgraded the database to 11g release 1 or higher, or installed a new Oracle11g database and they are now visible in the alert log. Note: Prior to 11gR1 these same 'Fatal NI connect error 12170' are written to the sqlnet.log. This document describes a problem that arises when a firewall exists between the client and the database server. CAUSE We can search the listener log covering the same time period using this search criteria. (HOST=121.23.142.141)(PORT=45679) The 11glistener log in text format is located here: $ORACLE_BASE/diag/tnslsnr///trace/.log Again, this is the client's IP address and the unique ephemeral port assigned to the client for this connection. In this case, we