Thursday, July 5, 2012

Ugh. Thanks for the Bad News, Kernoal


Kernoal Stevens commented on another blog post that in the later versions of Innovator-C not only do we have the new 1 core limit, but Innovator-C will no longer support ER or HDR.

What a bummer, here is the README from the Innovator-C download page that confirms this new limitation:
Changes to Replication in Informix 11.70.xC5 Innovator-C edition

For 11.70.xC5, Informix Innovator-C edition no longer supports Enterprise Replication (ER) or High-availability data replication (HDR). If you were using replication in an older version of Innovator-C, you must disable replication after upgrading to 11.70.xC5.

If you want to continue using replication in Informix 11.70.xC5, you can purchase the Choice, Growth or Ultimate edition. 

Removing Enterprise Replication 

If Enterprise Replication was defined for the previous version of the server, remove replication by running the following command:  

cdr delete server  --force

Removing HDR

If  High-availability data replication was defined for the previous version of the server, convert the server to a standard server by running the following command:

onmode -d standard
This just makes me sad. I understand that IBM needs to make a profit and to do that they can't be giving away everything for free. I get that, I really do, but HDR was the kind of feature that made Innovator-C stand out when compared to other free RDBMS options and now it is gone. Oh well, thanks for the free parking while it lasted.

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2 comments:

  1. Really SAD Truth!!! what will happen to an existing HDR installation?

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  2. This is how it was explained to me: if you are running an Innovator-C version that allows HDR (11.70.xC4 and earlier) you can continue to run this version in production with HDR. If you want/need to upgrade to a later version that no longer supports HDR (11.70.xC5 and greater at the moment) then you must forfeit the HDR feature. Consult with your IBM rep, etc., i.e. don't take my word for it.

    We will be sticking with 11.70.xC3 for as long as possible to keep the HDR feature since this version has been ridiculously stable for us and the current feature set meets our needs.

    If you must upgrade or are thinking about deploying Innovator-C for the first time and need a backup instance (honestly, who doesn't need a this? I wouldn't run anything I care about on a stand alone engine.) you can still use the Continuous Log Restore feature in Innovator-C. Definitely not as great as HDR, but infinitely better than nothing. The main concern would be being able to salvage the current logical log from a failed instance if your primary server flat out died and you couldn't get the current log that hasn't been backed up to your storage manager off the primary server's disks.

    You can minimize the data loss in this situation by forcing logical log switches every N minutes if your business case will allow you to "lose at most N minutes of transactions" in the absolute worst case scenario. If this isn't acceptable then it looks like you're paying for Growth Edition.

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