Fatal Ni Connect Error 12537 Sqlnet.log
12, 2016 - 3:19 am UTC Category: Database – Version: 11.2.0.1 Latest Followup You Asked Hi tom, In our oracle database setup frequently getting error like - Fatal NI connect error 12537, connecting to: (LOCAL=NO) 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: 27-JUL-2016 17:24:10 Tracing not turned on. 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 opiodr aborting process unknown ospid (9352) as a result of ORA-609 and we said... From MOS 1538717.1 ================================================== Alert.log shows ORA-609 with TNS-12537: TNS:connection closed (Doc ID 1538717.1) APPLIES TO: Oracle Net Services - Version 11.2.0.1 to 11.2.0.4 [Release 11.2] Oracle Net Services - Version 12.1.0.2 to 12.1.0.2 [Release 12.1] Information in this document applies to any platform. SYMPTOMS Alert log shows failed incoming connection: Fatal NI connect error 12537, connecting to: (LOCAL=NO) VERSION INFORMATION: TNS for 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 Time: 26-FEB-2013 02:23:51 Tracing not turned on. 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 opiodr aborting process unknown ospid (28725) as a result of ORA-609 CAUSE First an explanation of this kind of errors. The message opiodr aborting process unknown ospid (.....) as a result of ORA-609 is just a notification that oracle database closed (aborted) a dedicated process because of ORA-609. ORA-609 means "could not attach to incoming connection" so
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have a script to monitor the alert.log file for any ORA-xxxx errors. With 11g we found https://davidalejomarcos.wordpress.com/2011/01/18/removing-fatal-ni-connect-error-xxxx-from-your-alert-log/ out many entries in regards of: Fatal NI connect error http://www.dbasupport.com/forums/showthread.php?40144-tns-connection-close-error The problem: alert.log file has many entries for Fatal NI connect error. Examples: *********************************************************************** Fatal NI connect error 12514, connecting to: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxxx)(PORT=nnn))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=sss)(CID=(PROGRAM=oracle)(HOST=xxx)(USER=oracle)))) VERSION INFORMATION: TNS for Linux: Version 11.2.0.2.0 - Production TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production Time: fatal ni 17-JAN-2011 10:20:45 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 Error 12514 received logging on to the standby Mon Jan 17 10:21:45 2011 *********************************************************************** or *********************************************************************** fatal ni connect Fatal NI connect error 12170. VERSION INFORMATION: TNS for Linux: Version 11.2.0.2.0 - Production Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production Time: 18-JAN-2011 15:13:08 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=xx.xx.x.xx)(PORT=nnnn)) Tue Jan 18 15:40:20 2011 The solution: We will have an entry on the alert.log file every time a client connection of any kind fails to complete or is aborted. One way to minimize the impact is by using the parameter SQLNET.INBOUND_CONNECT_TIMEOUT (default to 60 seconds on 10gR2 and 11g) but, sometimes, this value is not adequate. Oracle also mentions the occurrence of this error if you use DB Console or Enterprise Manager to monitor
connection close error If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 2 of 2 Thread: tns connection close error Tweet Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 11-25-2003,11:18 AM #1 leonard905 View Profile View Forum Posts Member Join Date Jun 2000 Location dumfries,va,usa Posts 227 tns connection close error Hi all, Can someone help me out with why a user cannot connect to a remote database. Below is a copy of his sqlnet.log file: Fatal NI connect error 12537, connecting to: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=campus.com)(PORT=1530))(CONNECT_DATA=(SID=test02)(Server=D edicated)(CID=(PROGRAM=C:\ora6i\BIN\PLUS80W.EXE)(HOST=remote)(USER=user1)))) VERSION INFORMATION: TNS for 32-bit Windows: Version 8.0.6.0.0 - Production Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 8.0.6.0.0 - Production Time: 25-NOV-03 10:01:34 Tracing not turned on. Tns error struct: nr err code: 12206 TNS-12206: TNS:received a TNS error during navigation ns main err code: 12537 TNS-12537: TNS:connection closed ns secondary err code: 12560 nt main err code: 507 TNS-00507: Connection closed nt secondary err code: 0 nt OS err code: 0 leonard905 leonard905@yahoo.com Reply With Quote 11-25-2003,11:25 AM #2 fraze View Profile View Forum Posts Senior Member Join Date Nov 2000 Location Birmingham, UK Posts 360 Have a look at: http://metalink.oracle.com/metalink/..._id=255190.996 and http://metalink.oracle.com/metalink/...&p_id=120498.1 HTH Reply With Quote Quick Navigation Oracle Database Administration Top Site Areas Settings Private Messages Subscriptions Who's Online Search Forums Forums Home Forums Oracle Forums Oracle Database Administration Oracle Applications DBA Oracle Development Oracle Certification Oracle : How To Oracle Careers Oracle Positions Available Oracle Job Wanted Archives Forum Archives Other Feedback and Questions regarding the forums Obfuscation Unlimited « Previous Thread | Next Thread » Posting Permissions You