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IDS Forum

Re: Advice sought

Posted By: Martin Fuerderer
Date: Friday, 17 January 2003, at 9:29 a.m.

In Response To: Advice sought (Malcolm Garbett )

Hi,

hmm. It pretty much depends on what you're going to do to/with your
archdb once it's been filled, and how much data will be filled in which
table/dbspace ...

If I'd be you, I'd probably drop archdb and re-create it in exactly the
same
way it's been created elsewhere - if only to keep things conform for
future
administration, running same scripts on different machines, etc.
(Otherwise you'd always have to think of this setup being different, i.e.
you'd have to add chunks not to dbs1 but to rootdbs to accomodate more
data in archdb, etc.)

Probably I'd ask the people who did the setup before doing the
drop/re-create ...
Just in case they actually did this with some thought in their minds ...
:)

Actually it's just an DB (System) Admin thing. The average "SQL-user"
will not notice the difference (except if there would be significant
performance
differences between disks ...).

Hope it helps,
Martin
--
Martin Fuerderer
IBM Informix Development Munich
Data Management Solutions





"Malcolm Gar...." <malcolm.g@newall.co.uk>
Sent by: forum.subscriber@iiug.org
17.01.2003 12:08


To: ids@iiug.org
cc:
Subject: Advice sought [25]



Hi all,

I have a database on our system (called archdb) that is currently empty.

We are going to begin populating this with data. (Moving "old" data from
our live dB to archdb)

I ran some basic tests on archdb, and discovered a bad index on one table.

As the dB is empty I dropped and recreated the table, and cured the
problem.

However...

We have rootdbs and dbs1. As I thought one never puts anything other than
system stuff in rootdbs I created the table in dbs1. On further checking
I
discovered that the people who set up the our system put "live" and some
other dBs in dbs1, but for some reason they put archdb in rootdbs.

So...I now have archdb in rootdbs, apart from one table, and that's in
dbs1.

My options, as I see them are these.

1. Leave everything as it is now.
2. Drop and recreate the one table, putting it in rootdbs.
3. Drop the database archdb and recreate it in dbs1

Suggestions/comments as to the best option to choose, and any dire
consequences inherent in any of the above options gratefully received.

Here's the output from onstat -d

Informix Dynamic Server 2000 Version 9.21.UC2 -- On-Line -- Up 36 days
17:52:11 -- 688128 Kbytes

Dbspaces
address number flags fchunk nchunks flags owner name
9c5187d0 1 0x1 1 1 N informix rootdbs
9c5575f0 2 0x1 2 2 N informix dbs1
2 active, 2047 maximum

Chunks
address chk/dbs offset size free bpages flags pathname
9c518918 1 1 0 125000 81641 PO- /dev/infdisk1
9c557320 2 2 125000 875000 32610 PO- /dev/infdisk1
9c557488 3 2 0 1000000 999997 PO- /dev/infdisk2
3 active, 2047 maximum

Regards,
Malcolm Garbett
IT Manager

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Messages In This Thread

  • Advice sought
    Malcolm Garbett -- Friday, 17 January 2003, at 6:08 a.m.
    • Re: Advice sought
      Martin Fuerderer -- Friday, 17 January 2003, at 9:29 a.m.
    • Re: Advice sought
      ART KAGEL, BLOOMBERG/ 65E 55TH -- Friday, 17 January 2003, at 12:28 p.m.
    • Re: Advice sought
      MALCOLM WEALLANS -- Monday, 20 January 2003, at 5:32 a.m.

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