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IDS Forum

Re: How To Remove Old Instance (show in onstat -g

Posted By: JACQUES RENAUT
Date: Thursday, 25 July 2013, at 10:42 a.m.

In Response To: How To Remove Old Instance (show in onstat -g dis) (O KHAN)

Original Post:

Hi All,

I wanted to know that if Informix keeps a list of all instances that has been created on the machine? if yes, where it stores this information?

Actually, I have upgraded my IDS version from 11.70 FC4 to IDS 11.70 FC7 on both HDR-primary & HDR-secondary servers, and when i execute the command (onstat -g dis) on HDR-secondary, it is showing me two instances, one using the IDS 11.70 FC7 and the second is using the IDS 11.70 FC4. However, the same command runs fine on HDR-primary and it show only one instance in IDS 11.70 FC7.

So i wanted to know why the output is not same on both servers. Although, the instance shown in IDS 11.70 FC4 is down, but still i want to know that how to fix this information.

Can someone tell me that if Informix engine keep any list of instances, if yes then how to edit this information?

Another problem, I can see in the output below is that it shows the second instance in the different host. I am running this command on the host (production4) and it is showing the second instance in (production8), which is HDR-primary for this host.

However, when i execute the same command on the HDR-primary (production4), it is showing the correct output with only one instance. Please see the output below.

Output of "onstat -g dis" command (from HDR-Secondary, host: production8)

informix@production8> onstat -g dis

IBM Informix Dynamic Server Version 11.70.FC7 -- Updatable (Sec) -- Up 17:26:02 -- 4317088 Kbytes

There are 2 servers found
Server : prd_comm_tcp
Server Number : 11
Server Type : IDS
Server Status : Up
Server Version: IBM Informix Dynamic Server Version 11.70.FC7
Shared Memory : 0x10000000
INFORMIXDIR : /usr1/informix_1170FC7
ONCONFIG : /usr1/informix_1170FC7/etc/onconfig.prd_comm_tcp
SQLHOSTS : /usr1/informix_1170FC7/etc/sqlhosts
Host : prduction8

Server : prd_hq_tcp
Server Number : 1
Server Type : IDS
Server Status : Down
Server Version: IBM Informix Dynamic Server Version 11.70.FC4
Shared Memory : 0x10000000
INFORMIXDIR : /usr1/informix_1170FC4
ONCONFIG : /usr1/informix_1170FC4/etc/onconfig.prd_hq_tcp
SQLHOSTS : /usr1/informix_1170FC4/etc/sqlhosts
Host : production4

Output of "onstat -g dis" command (from HDR-Secondary, host: production4)

informix@production4> onstat -g dis

IBM Informix Dynamic Server Version 11.70.FC7 -- On-Line (Prim) -- Up 17:30:05 -- 4317088 Kbytes

There are 1 servers found
Server : prd_hq_tcp
Server Number : 1
Server Type : IDS
Server Status : Up
Server Version: IBM Informix Dynamic Server Version 11.70.FC7
Shared Memory : 0x10000000
INFORMIXDIR : /usr1/informix_1170FC7
ONCONFIG : /usr1/informix_1170FC7/etc/onconfig.prd_hq_tcp
SQLHOSTS : /usr1/informix_1170FC7/etc/sqlhosts
Host : production4

So, I look for support to fix this issue.

Thanks in advance for anticipation.

Regards,
Khan

Response:

onstat -g dis is looking in the file (on Unix) /INFORMIXTMP/.infxdirs to find all the Informix product installations...after that, I believe it is looking in each INFORMIXDIR path it finds in that file and in the etc directory attached to those paths looking for any .conf.* files and reporting what it finds.

So it would seem on your primary you've either removed the directory where the old version had been installed so it can't get to that directory, or that directory contains no .conf.* files to look at. But on your secondary, those files exist so onstat -g dis finds them.

Jacques Renaut
IBM Informix Advanced Support
APD Team

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