Linux: How does db2iauto work?

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Burkhard Schultheis - 10 Feb 2006 13:45 GMT

On Linux and other UNIX like systems, you can configure a db2 instance
to start automatically at system start with the command db2iauto -on
<instance name>. But how does it work?
On Linux (SuSE 9.3) I see no entry in /etc/inittab and no entry within
/etc/init.d. All I see is this: There is an undocumented DB2 variable
(db2set -lr doesn't know it) DB2AUTOSTART, which will be set to YES or
unset via the db2iauto command.

Which mechanism starts DB2?

Regards,

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Burkhard Schultheis
Tele Data Electronic, Wagnerstr. 10, D-76448 Durmersheim
Email: schultheis@tde-online.de
Phone: +49 7245 9287-21

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Darin McBride - 11 Feb 2006 16:25 GMT

> On Linux and other UNIX like systems, you can configure a db2 instance
> to start automatically at system start with the command db2iauto -on
[quoted text clipped - 5 lines]
>
> Which mechanism starts DB2?

You should see in the inittab an entry for db2fmcd (unless you've removed
it). That entry looks for all instances marked with the autostart value
and starts them during boot.

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Evaldez - 12 Feb 2006 12:35 GMT

> > On Linux and other UNIX like systems, you can configure a db2 instance
> > to start automatically at system start with the command db2iauto -on
[quoted text clipped - 9 lines]
> it). That entry looks for all instances marked with the autostart value
> and starts them during boot.

Verify whether you have the DB2AUTOSTART registry variable set for your
instance.
"db2set DB2AUTOSTART -i db2inst1" will list what the DB2AUTOSTART is
set to.

For instance, if your instance name is db2inst1 and you have done a
"db2set DB2AUTOSTART=YES", then the command above "db2set DB2AUTOSTART
-i db2inst1" should return YES.

If it is not set to YES, log in as the instance owner and type "db2set
DB2AUTOSTART=YES".

That should do it.
Give it a try !!

Enrique Valdez

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