Join IIUG
 for   
 

Informix News
18 Nov 13 - ZDNet - Top 20 mobile skills in demand... Read
09 Sep 13 - telecompaper - Shaspa and Tatung have shown a new smart home platform at Ifa in Berlin. Powered by the IBM Informix software... Read
06 Sep 13 - IBM data magazine - Mission Accomplished - Miami, Florida will be the backdrop for the 2014 IIUG Informix Conference... Read
01 Feb 13 - IBM Data Magazine - Are your database backups safe? Lester Knutsen (IBM Champion) writes about database back up safety using "archecker"... Read
14 Nov 12 - IBM - IBM's Big Data For Smart Grid Goes Live In Texas... Read
3 Oct 12 - The Financial - IBM and TransWorks Collaborate to Help Louisiana-Pacific Corporation Achieve Supply Chain Efficiency... Read
28 Aug 12 - techCLOUD9 - Splunk kicks up a SaaS Storm... Read
10 Aug 12 - businessCLOUD9 - Is this the other half of Cloud monitoring?... Read
3 Aug 12 - IBM data management - Supercharging the data warehouse while keeping costs down IBM Informix Warehouse Accelerator (IWA) delivers superior performance for in-memory analytics processing... Read
2 Aug 12 - channelbiz - Oninit Group launches Pay Per Pulse cloud-based service... Read
28 May 12 - Bloor - David Norfolk on the recent Informix benchmark "pretty impressive results"... Read
23 May 12 - DBTA - Informix Genero: A Way to Modernize Informix 4GL Applications... Read
9 Apr 12 - Mastering Data Management - Upping the Informix Ante: Advanced Data Tools... Read
22 Mar 12 - developerWorks - Optimizing Informix database access... Read
14 Mar 12 - BernieSpang.com - International Informix User Group set to meet in San Diego... Read
1 Mar 12 - IBM Data Management - IIUG Heads West for 2012 - Get ready for sun and sand in San Diego... Read
1 Mar 12 - IBM Data Management - Running Informix on Solid-State Drives.Speed Up Database Access... Read
26 Feb 12 - BernieSpan.com - Better results, lower cost for a broad set of new IBM clients and partners... Read
24 Feb 12 - developerWorks - Informix Warehouse Accelerator: Continuous Acceleration during Data Refresh... Read
6 Feb 12 - PRLOG - Informix port delivers unlimited database scalability for popular SaaS application ... Read
2 Feb 12 - developerWorks - Loading data with the IBM Informix TimeSeries Plug-in for Data Studio... Read
1 Feb 12 - developerWorks - 100 Tech Tips, #47: Log-in to Fix Central... Read
13 Jan 12 - MC Press online - Informix Dynamic Server Entices New Users with Free Production Edition ... Read
11 Jan 12 - Computerworld - Ecologic Analytics and Landis+Gyr -- Suitors Decide to Tie the Knot... Read
9 Jan 12 - planetIDS.com - DNS impact on Informix / Impacto do DNS no Informix... Read
8 Sep 11 - TMCnet.com - IBM Offers Database Solution to Enable Smart Meter Data Capture... Read
1 Aug 11 - IBM Data Management Magazine - IIUG user view: Happy 10th anniversary to IBM and Informix... Read
8 Jul 11 - Database Trends and Applications - Managing Time Series Data with Informix... Read
31 May 11 - Smart Grid - The meter data management pitfall utilities are overlooking... Read
27 May 11 - IBM Data Management Magazine - IIUG user view: Big data, big time ( Series data, warehouse acceleration, and 4GLs )... Read
16 May 11 - Business Wire - HiT Software Announces DBMoto for Enterprise Integration, Adds Informix. Log-based Change Data Capture... Read
21 Mar 11 - Yahoo! Finance - IBM and Cable&Wireless Worldwide Announce UK Smart Energy Cloud... Read
14 Mar 11 - MarketWatch - Fuzzy Logix and IBM Unveil In-Database Analytics for IBM Informix... Read
11 Mar 11 - InvestorPlace - It's Time to Give IBM Props: How many tech stocks are up 53% since the dot-com boom?... Read
9 Mar 11 - DBTA - Database Administration and the Goal of Diminishing Downtime... Read
2 Feb 11 - DBTAs - Informix 11.7 Flexible Grid Provides a Different Way of Looking at Database Servers... Read
27 Jan 11 - exactsolutions - Exact to Add Informix Support to Database Replay, SQL Monitoring Solutions... Read
25 Jan 11 - PR Newswire - Bank of China in the UK Works With IBM to Become a Smarter, Greener Bank... Read
12 Oct 10 - Database Trends and Applications - Informix 11.7: The Beginning of the Next Decade of IBM Informix... Read
20 Sep 10 - planetIDS.com - ITG analyst paper: Cost/Benefit case for IBM Informix as compared to Microsoft SQL Server... Read
20 Jul 10 - IBM Announcements - IBM Informix Choice Edition V11.50 helps deploy low-cost scalable and reliable solutions for Apple Macintosh and Microsoft Windows... Read
20 Jul 10 - IBM Announcements - Software withdrawal: Elite Support for Informix Ultimate-C Edition... Read
24 May 10 - eWeek Europe - IBM Supplies Database Tech For EU Smart Grid... Read
23 May 10 - SiliconIndia - IBM's smart metering system allows wise use of energy... Read
21 May 10 - CNET - IBM to help people monitor energy use... Read
20 May 10 - ebiz - IBM Teams With Hildebrand To Bring Smart Metering To Homes Across Britain... Read
19 May 10 - The New Blog Times - Misurare il consumo energetico: DEHEMS è pronto... Read
19 May 10 - ZDNet - IBM software in your home? Pact enables five-city smart meter pilot in Europe... Read
17 March 10 - ZDNet (blog) David Morgenstern - TCO: New research finds Macs in the enterprise easier, cheaper to manage than... Read
17 March 2010 - Virtualization Review - ...key components of Big Blue's platform to the commercial cloud such as its WebSphere suite of application ser vers and its DB2 and Informix databases... Read
10 February 2010 - The Wall Street Journal - International Business Machines is expanding an initiative to win over students and professors on its products. How do they lure the college crowd?... Read


End of Support Dates

IIUG on Facebook IIUG on Twitter

[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

IDS Forum

RE: DBSERVERNAME Best Practice Pri/HDR/RSS

Posted By: Andrew Ford
Date: Wednesday, 20 July 2016, at 2:46 p.m.

In Response To: Re: DBSERVERNAME Best Practice Pri/HDR/RSS (Informix DBA)

I went back and reread your original question.

This part is a little confusing, so I want to clear it up.

> The reason I ask is we were having a challenge restoring logs from Orig
Primary and new Primary (prev HDR)

Is this your use case?

2 servers, dbsvr01a and dbsvr01b. dbsvr01a is primary and dbsvr01b is the
HDR secondary.

Level 0 archive is taken against dbsvr01a
Logical Logs 1, 2 and 3 on dbsvr01a are filled and backed up
You fail over to dbsvr01b, making it the primary and dbsvr01a the secondary
Logical Logs 4 and 5 on dbsvr01b are filled and backed up

Something bad happens and you want to

Restore the Level 0 archive taken against dbsvr01a to dbsvr01b
Apply logical logs 1, 2 and 3 taken against dbsvr01a to dbsvr01b
Apply logical logs 4 and 5 taken on dbsvr01b to dbsvr01b

?

I would say always take a level 0 archive immediately after a failover, that
would solve your recoverability problem but it wouldn't let you do any point
in time restores if you needed to unless you resolve this issue.

Andrew

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of
Informix DBA
Sent: Wednesday, July 20, 2016 1:34 PM
To: ids@iiug.org
Subject: Re: DBSERVERNAME Best Practice Pri/HDR/RSS [37454]

I have not found a nice way to really trick onbar/storage manager since
onbar sends the DBSERVERNAME to the storage manager as the image name
getting backed up. Then when onbar requests the restore it uses the
DBSERVERNAME of the first entry as the image name for the phys and logical
restore. So when it gets to the logs from the HDR server it fails as the
image doesn't match the DBSERVERNAME.

The only "trick" I discovered is after the log restore fails (trying to
restore the orig_HDR logs) I can trick onbar and delete all the
"orig_Primary" entries and restart the log restore, though I am hoping there
is a more elegant way to achieve this. Though this method requires that the
log restore fails, modify ixbar file, restart log restore.

Thank You,

--Dave

On Wed, Jul 20, 2016 at 12:49 PM, Andrew Ford <andrew@informix-dba.com>
wrote:

> Can you make a backup copy of the ixbar file and manually modify the
> DBSERVERNAME ixbar using to stop confusing onbar?
>
> -----Original Message-----
> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of
> Informix DBA
> Sent: Wednesday, July 20, 2016 11:43 AM
> To: ids@iiug.org
> Subject: Re: DBSERVERNAME Best Practice Pri/HDR/RSS [37451]
>
> Thank you Andrew.
>
> The reason I ask is we were having a challenge restoring logs from
> Orig Primary and new Primary (prev HDR) using onbar and netbackup
> since onbar writes the DBSERVERNAME to the ixbar file (see my other
> thread titled "Backup/Restore Primary/HDR"). On a restore onbar
> requests the logs from the storage manager using the first
> DBSERVERNAME in the ixbar file. Onbar gets confused when the
> DBSERVERNAME changes due to the PRI ---> HDR switchover and fails on
> the log restore that was backed up by the orig HDR.
>
> IBM support suggested making all the nodes in the PRI/HDR/RSS have the
> same DBSERVERNAME so that any logs getting backed up will have the
> same DBSERVERNAME entry listed in the ixbar file. I know we can
> utilize the HA_ALIAS in combo with DBSERVERALIASES to distinctly ID each
server.
> Though I have never seen it done this way and was curious how other
> people handle this scenario.
>
> Thank You,
>
> --Dave
>
> On Wed, Jul 20, 2016 at 11:45 AM, Andrew Ford
> <andrew@informix-dba.com>
> wrote:
>
> > I just append an 'a', 'b', 'c', etc. to a common name that describes
> > the group of servers.
> >
> > I.e. dbsvr01a, dbsvr01b, dbsvr01c is a group of servers that
> > participate in HDR/RSS for the dbsvr01 data. I then use a group
> > called
> > g_dbsvr01 in INFORMIXSQLHOSTS to represent all 3.
> >
> > I don't like the idea of having the same DBSERVERNAME, it might not
> > even be doable. Not 100% sure on that.
> >
> > I also don't like the idea of indicating primary or sds or rss or
> > secondary in the dbservername (i.e. dbsvr01_pri, dbsvr01_sec,
> > dbsvr01_sds,
> > dbsvr01_rss) because if there is a failover your dbsvr01_sec could
> > actually be the primary and that is confusing.
> >
> > Stick to a common base DBSERVERNAME name with an 'a', 'b', 'c'
> > appended and use an INFORMIXSQLHOSTS group to let the client
> > automatically connect to the primary or use the connection manager.
> >
> > If you don't like 'a', 'b', 'c' then maybe still use the same base
> > DBSERVERNAME but append geographical location like dbsvr01_omaha,
> > dbsvr01_austin, dbsvr01_bahstin, etc. if you have geographical
> > redundancy in your HDR/RSS configuration.
> >
> > Andrew
> >
> > -----Original Message-----
> > From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf
> > Of Informix DBA
> > Sent: Wednesday, July 20, 2016 10:08 AM
> > To: ids@iiug.org
> > Subject: DBSERVERNAME Best Practice Pri/HDR/RSS [37448]
> >
> > Are there any suggestions related to best practices for naming the
> > DBSERVERNAME in a Primary/ HDR/ multiple RSS cluster?
> >
> > Would it be ok have the exact same DBSERVERNAME for all instances in
> > the cluster i.e. PRI / HDR / and multiple RSS servers? Then use
> > separate names for HA_ALIAS (and in onmode commands) to distinctly
> > identify each server name?
> >
> > Any suggestions or caveats to be aware of?
> >
> > Thank You,
> >
> > --Dave
> >
> > --089e0103ecc8cbd2490538128f17
> >
> >
> > ********************************************************************
> > **
> > ******
> > ***
> > Forum Note: Use "Reply" to post a response in the discussion forum.
> >
> >
> >
> >
>
> **********************************************************************
> ******
> ***
> > Forum Note: Use "Reply" to post a response in the discussion forum.
> >
> >
>
> --001a11423b4231cc0e053813e3b6
>
>
> **********************************************************************
> ******
> ***
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
>
>
****************************************************************************
***
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--001a113d9e9695842505381572c9

****************************************************************************
***
Forum Note: Use "Reply" to post a response in the discussion forum.

Messages In This Thread

[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

IDS Forum is maintained by Administrator with WebBBS 5.12.