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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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LEARN ABOUT HPUX
sgmgr
sgmgr(1M) sgmgr(1M) NAME
sgmgr - Serviceguard Manager SYNOPSIS
filename ] | COMserver username password cluster_name ...]] COMserver2 Remarks Serviceguard Manager is the graphical user interface for Serviceguard or Serviceguard Extension for RAC software, Version A.11.12 or later, Serviceguard products are not included in the standard HP-UX operating system. DESCRIPTION
The command starts Serviceguard Manager, the graphical user interface for Serviceguard clusters. Serviceguard Manager can be installed on HP-UX, Linux, or Windows. Serviceguard Manager can be used to view saved data files of a single cluster, or to see running clusters. To see the "live" cluster map, Serviceguard Manager connects to a Serviceguard node on the same subnet as those clusters, specifically to a part of Serviceguard called the Cluster Object Manager (COM). Options supports the options listed below. No options are required. If any option is not specified, the user will be prompted to supply it after the interface opens. Open a previously saved or example object data file. The file will have the .sgm extension. It can display only one cluster. This option cannot be used with any other options. Specify the Serviceguard node that will be the server. This node's COM will query cluster objects running on its subnets, and will report their status and configuration. Servers with Serviceguard Version A.11.12 or later can monitor clusters. Servers with Ser- viceguard Version A.11.14 or later can also perform administrative actions. Servers with Version A.11.16 or later can also configure clusters. To specify multiple sessions, repeat the -s option. The user login name for the COMserver node. Valid only if COMserver is specified. The user password on the COMserver node. Valid only if username is specified. In creating the map, the COMserver will include the cluster where it is a member. In creating the map, the COMserver will report information about the specified cluster_name(s). Specify clusters with the following cluster software installed: MC/Serviceguard Version A.10.10 or later, MC/LockManager Version A.11.02 or later, Serviceguard OPS or Extension for RAC Version A.11.08 or later, and all versions of MetroClusters and ContinentalClusters. To see several clusters, repeat the -c option. If you specify this unused nodes option all COMservers will report information about nodes that have Serviceguard installed, but are not currently configured in any cluster. To connect to another COMserver for another session, repeat the -s options. AUTHOR
was developed by HP. SEE ALSO
See documents at http://docs.hp.com/hpux/ha including: Managing Serviceguard. Configuring OPS Clusters with Serviceguard OPS Edition. Using Serviceguard Extension for Real Application Cluster (RAC). Series 700 or 800 Works with Optional Serviceguard or Serviceguard Extension for RAC Software sgmgr(1M)