Fatal Ni Connect Error 12518 Oracle
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Tns-12564: Tns:connection Refused
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Fatal Ni Connect Error 12547 Connecting To Local No
back on and reload this page. Please enter a title. You ns secondary err code: 12606 can not post a blank message. Please type your message and try again. More discussions in fatal ni connect error 12514 connecting to data guard Data Guard All PlacesDatabasePerformance & AvailabilityData Guard This discussion is archived 1 2 Previous Next 15 Replies Latest reply on Aug 21, 2015 5:49 AM by Jithin https://scn.sap.com/thread/1301805 M Error while performing switch over in oracle datagaurd 11g Jithin M Aug 19, 2015 11:10 AM Hi,We have configured oracle DR with data guard. Everything working fine but alert log writing error message as below,Assigning activation ID 3966483670 (0xec6bbcd6)Thread 1 advanced to log sequence 107 (thread open)Thread 1 opened at log sequence https://community.oracle.com/thread/3782322 107 Current log# 2 seq# 107 mem# 0: D:\ORACLE\DEV\ORIGLOGB\LOG_G12M1.DBF Current log# 2 seq# 107 mem# 1: D:\ORACLE\DEV\MIRRLOGB\LOG_G12M2.DBFSuccessful open of redo thread 1MTTR advisory is disabled because FAST_START_MTTR_TARGET is not setWed Aug 19 13:42:10 2015SMON: enabling cache recoveryWed Aug 19 13:42:10 2015Incremental checkpoint up to RBA [0x6b.3.0], current log tail at RBA [0x6b.3.0]Wed Aug 19 13:42:10 2015Archived Log entry 117 added for thread 1 sequence 106 ID 0xec6bbcd6 dest 1:***********************************************************************Fatal NI connect error 12518, connecting to: (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(COMMUNITY=SAP.WORLD)(PROTOCOL=TCP)(HOST=mmdt0172)(PORT=1521)))(CONNECT_DATA=(SID=DEV)(SERVICE_NAME=DEV_mmdt0172)(CID=(PROGRAM=d:\oracle\dev\11203\bin\ORACLE.EXE)(HOST=MMSR18)(USER=SYSTEM)))) VERSION INFORMATION:TNS for 64-bit Windows: Version 11.2.0.3.0 - ProductionWindows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.3.0 - Production Time: 19-AUG-2015 13:42:11 Tracing not turned on. Tns error struct: ns main err code: 12564 TNS-12564: TNS:connection refused ns secondary err code: 0 nt main err code: 0 nt secondary err code: 0 nt OS err code: 0***********************************************************************Fatal NI connect error 12518, connecting to: (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(COMMUNITY=SAP.WORLD)(PROTOCOL=TCP)(HOST=mmdt0172)(PORT=1521)))(CONNECT_DATA=(SID=DEV)(SERVICE_NAME=DEV_mmdt0172)(CID=(PROGRAM=d:\oracle\dev\11203\bin\ORACLE.EXE)(HOST=MMSR18)(USER=SYSTEM)))) VERSION INFORMATION:TNS for 64-bit Windows: Version 11.2.0.3.0 - ProductionWindows NT TCP/IP NT Protocol Adapter for 64-bit Windo
folks… I got an email from users saying they are unable to connect toone of the production server. They are getting "NO LISTENER" message. So, its clear from this that listener could http://haridba7.blogspot.com/2012/12/networking-errors.html have been shutdown. I logged in and checked the listener status using both "lsnrctl status" command and "ps -ef | grep tns" command. Both of the commands didn't given any posivitive result. So I started the listener with the below command and got error as this… [oracle@dbserver1 admin]$ lsnrctl start LISTENER LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 25-APR-2012 18:16:24 Copyright (c) 1991, fatal ni 2005, Oracle. All rights reserved. Starting /u01/ora10g/bin/tnslsnr: please wait… TNS-12537: TNS:connection closed TNS-12560: TNS:protocol adapter error TNS-00507: Connection closed Linux Error: 29: Illegal seek The problem is identified as a line is missing in /etc/hosts file (mine is a Linux server). I added below line and problem solved 127.0.0.1 localhost.localdomain localhost So, whenever you hit with the above error (Illegal Seek), please check hosts fatal ni connect file and add the above line which will solve the issue…… Listener fails to start if listener log file is >4GB Let me share an experience with you people which I faced 2 weeks back… I got an email from application team stating they are unable to connect to database and getting below error TNS-12518: TNS: listener could not hand off client connection I immediately checked the listener status on the database server (My database is of 11.2.0.1 version on Windows platform) and it is up and running fine.As per regular troubleshoot check, the solution would be to trace the connection ORA-12518: TNS:listener could not hand off client connectionCause: The process of handing off a client connection to another process failed. Action: Turn on listener tracing and re-execute the operation. Verify that the listener and database instance are properly configured for direct handoff. If problem persists, call Oracle Support.But, before tracing, I checked the listener log file and observed below message TNS-12560: TNS: Protocol adapter errorTNS-00530: Protocol adapter error64-bit Windows Error: 53: Unknown errorTNS-12518: TNS: listener could not hand off client connectionTNS-12571: TNS: packet writer failureTNS-12560: TNS: Protocol adapter errorTNS-00530: Protocol adapter error64-bit Windows Error: 54: Unknown errorI tried reloading the l