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Operating Systems
AIX
Production Issue in AIX Oracle RAC [errpt output : DUPLICATE IP ADDRESS DETECTED IN THE NET]
Post 302915856 by manjusharma128 on Friday 5th of September 2014 06:37:04 AM
09-05-2014
Hi fpmurph,
For thanks for your reply and information.
you are correct. In our network, two server were having same MAC address (as mentioned in my previous post).
Below are the steps that we performed to resolve the issue:
->First network admin disable the port that is used by sql01 for MAC(all actiivty performed on one server at one time).
->Then we checked for duplicate error in Test01 server and test03 server.
->Error were not coming.
->Once n/w team enable the port again on sql01 server, then we again start recieving the same error on both sever.
->We tried to reboot both sql01 and sql03 server. But after when sql server comeup, error was still these.
->This time network admin tried to clear the ARP table for specific MAC address and we rebooted the sql01 server.
->View the errpt log in test01 server. Now we were not receiving "Duplicate IP detacted in net".
->Same step we followed for othese sql03 server and after another AIX server(test03) also was not receing error in errpt command.
->We check with our network team for reasoning.
->According to them, there was no issue with switch becuase switch only use to contain server MAC ans related IP address.
->That is the window server(sql01 and sql03 server) that was causing issue by generating same MAC address as AIX server.
->Still I am not sure about the reason which cause the sql machine to generate same MAC address.
->Last weekend window team did patching on Window server.
->Now our database and application are running fine.
Request you to all folks, if any one know baot the reason how window server can generate same MAC address as other machine or what are the situation, where this situation occure. Kindly update on this post.
Thnaks & Regards,
For thanks for your reply and information.
you are correct. In our network, two server were having same MAC address (as mentioned in my previous post).
Below are the steps that we performed to resolve the issue:
->First network admin disable the port that is used by sql01 for MAC(all actiivty performed on one server at one time).
->Then we checked for duplicate error in Test01 server and test03 server.
->Error were not coming.
->Once n/w team enable the port again on sql01 server, then we again start recieving the same error on both sever.
->We tried to reboot both sql01 and sql03 server. But after when sql server comeup, error was still these.
->This time network admin tried to clear the ARP table for specific MAC address and we rebooted the sql01 server.
->View the errpt log in test01 server. Now we were not receiving "Duplicate IP detacted in net".
->Same step we followed for othese sql03 server and after another AIX server(test03) also was not receing error in errpt command.
->We check with our network team for reasoning.
->According to them, there was no issue with switch becuase switch only use to contain server MAC ans related IP address.
->That is the window server(sql01 and sql03 server) that was causing issue by generating same MAC address as AIX server.
->Still I am not sure about the reason which cause the sql machine to generate same MAC address.
->Last weekend window team did patching on Window server.
->Now our database and application are running fine.
Request you to all folks, if any one know baot the reason how window server can generate same MAC address as other machine or what are the situation, where this situation occure. Kindly update on this post.
Thnaks & Regards,
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ndb_print_backup_file
NDB_PRINT_BACKUP_(1) MySQL Database System NDB_PRINT_BACKUP_(1) NAME
ndb_print_backup_file - print NDB backup file contents SYNOPSIS
ndb_print_backup_file file_name DESCRIPTION
ndb_print_backup_file obtains diagnostic information from a cluster backup file. Usage ndb_print_backup_file file_name file_name is the name of a cluster backup file. This can be any of the files (.Data, .ctl, or .log file) found in a cluster backup directory. These files are found in the data node's backup directory under the subdirectory BACKUP-#, where # is the sequence number for the backup. For more information about cluster backup files and their contents, see Section 17.5.3.1, "MySQL Cluster Backup Concepts". Like ndb_print_schema_file and ndb_print_sys_file (and unlike most of the other NDB utilities that are intended to be run on a management server host or to connect to a management server) ndb_print_backup_file must be run on a cluster data node, since it accesses the data node file system directly. Because it does not make use of the management server, this utility can be used when the management server is not running, and even when the cluster has been completely shut down. Additional Options None. COPYRIGHT
Copyright (C) 1997, 2014, Oracle and/or its affiliates. All rights reserved. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/. SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/. AUTHOR
Oracle Corporation (http://dev.mysql.com/). MySQL 5.5 01/30/2014 NDB_PRINT_BACKUP_(1)