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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
define_cached_server
define cached server(1m) define cached server(1m) NAME
define cached server - Creates knowledge of a server in the local clerk's cache SYNOPSIS
cdscp define cached server name tower value ARGUMENTS
A simple name for the cached server. The protocol sequence and network address of the server node. The format is protocol-sequence:net- work-address. A protocol-sequence is a character string identifying the network protocols used to establish a relationship between a client and server. There are two choices of protocol sequence, depending on the network address that is supplied in the binding: ncacn_ip_tcp or ncadg_ip_udp. For the network-address, specify an Internet address using the common Internet address notation. For more information about this format, see the RPC introduction in the DCE Application Development Reference. DESCRIPTION
The define cached server command creates knowledge of a server in the local clerk's cache. This command is typically used to manually pro- vide configuration information to a clerk that cannot automatically configure itself. This is required, for instance, to give the clerk addressing information about a server across a WAN. Once the clerk knows about one server, it can find other servers through referrals. Privilege Required You must have write permission to the clerk. NOTE
This command is replaced at Revision 1.1 by the dcecp command and may not be provided in future releases of DCE. EXAMPLES
The following command creates knowledge of the server nrl in the local clerk's cache: cdscp> define cached server nrl tower ncacn_ip_tcp:16.20.15.25 RELATED INFORMATION
Commands: clear cached server(1m), dump clerk cache(1m), show cached server(1m) Books: OSF DCE Application Development Reference define cached server(1m)