Re: dbexport/dbimport problems
Posted in 1995
> Did you use the SQL that dbexport generated directly without editing it?
> Dbexport/dbimport looses all manner of useful information. Including,
for
> example, extent sizes, table locations in specific dbspaces and lock
> mode.
> If you do nothing, the tables all get created in the root dbspace, with
> page mode locking and an extent size of 8 pages. This tends to be
pretty
> non-optimal :-)
Not quite. dbexport/ dbimport set the first extent size to the current
data volume and the next extent size to 50% of that value. So extent
fragmentation would only be a problem if your data has been extremely
volatile since you did the import. You could always run tbcheck -pe to
make sure.
It's the other factors - especially putting everything on the same drive
as the logical logs, ooh, nasty, which I'd be watchful of.
Someone reminded me that if you have 6.00 or later, dbexport has a "-ss"
option to preserve everything to the letter.
akent@cix.compulink.co.uk (Andy Kent)
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