Hi group,

The logic for 6 small log's at initialize a new instance and in root dbspace is :

we know that dbspace will be there.
A lot of on config values are set to small / starting values to get instance up and initialized.

Then set up instance:

add new dbspace's / chunks
Move / create physical log's / logical log's in a different dbspace
update a lot of config values for the environment.

It would take most of the day to get this done with (scripts, commands, restarts).

Wayne

Wayne:

I'm not sure if you have a question with your post or seek to answer one that I don't remember from a parallel thread.

That said, I would take issue with the statements that "It would take most of the day to get this done with (scripts, commands, restarts)." Where "this" is initializing and then configuring a new instance. With planning and, as you note, scripting, it should not take more than 30 minutes tops to set up a new instance including fleshing out the logging (physical and logical), adding expected dbspaces and their chunks, editing the sqlhosts file, and updating the ONCONFIG file with best guess tunable settings.

Art

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Art S. Kagel, President and Principal Consultant
ASK Database Management Corp.
www.askdbmgt.com
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You can try the option to create an instance during installation of the product. This will create a "bigger instance" but very likely not an instance which meets your needs. 

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Hedwig Fuchs
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Original Message:
Sent: Fri January 30, 2026 06:42 AM
From: Art Kagel
Subject: Logical log's and initialize new instance

Wayne:

I'm not sure if you have a question with your post or seek to answer one that I don't remember from a parallel thread.

That said, I would take issue with the statements that "It would take most of the day to get this done with (scripts, commands, restarts)." Where "this" is initializing and then configuring a new instance. With planning and, as you note, scripting, it should not take more than 30 minutes tops to set up a new instance including fleshing out the logging (physical and logical), adding expected dbspaces and their chunks, editing the sqlhosts file, and updating the ONCONFIG file with best guess tunable settings.

Art

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Art S. Kagel, President and Principal Consultant
ASK Database Management Corp.
www.askdbmgt.com
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If you have any kind of running Informix instance now, you could run "dbschema -c" or "dbschema -c -ns" to generate the SQL or the commands that can be used as a head start to set up an instance.  Do not run the same commands against the same instance that you run dbschema against, but it will have the statements that you need to create dbspaces, logical logs, etc. You can take these commands and adapt them for your needs.  It won't update your onconfig, or create your sqlhosts, or create the underlying files or LVs for your chunks, but it might simplify the process of creating your chunks and logs.

Mike

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Mike Walker
xDB Systems, Inc
www.xdbsystems.com
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