Re: what happens to postmaster?

using navicat 8's import wizard which does row inserts
(provider=msdaora.1; persist security info=true). more
http://www.navicat.com/manual/online_manual/win_manual/ImportODBC.html

i know this is not navicat support, but can anyone from navicat
support also try answer this question?

On Tue, Jun 22, 2010 at 2:21 PM, Bill Moran <wmoran@potentialtech.com> wrote:
> In response to zach cruise <zachc1980@gmail.com>:
>
>> ...when i am importing a table (from oracle, or updating it), and a
>> user queries that same table?
>
> I depends on a lot of information you haven't provided ... Is the
> update inside a transaction?  Have you locked the table?
>
> The real answer is: whatever you want to happen.  Depending on how you
> set up the import, you have control over how others can interact with
> the table while the import is running.
>
> Some examples:
> * Grab an access exclusive lock on the table, nobody else will be able
>  to access it until you're done.
> * Grab an exclusive lock on the table, others will be able to read, but not
>  write to it until you're done.
>
> Some documentation to read up on:
> http://www.postgresql.org/docs/8.4/static/explicit-locking.html
>
>> is it ok to be concerned about corruption etc.
>
> You should always be concerned about those things.
>
> --
> Bill Moran
> http://www.potentialtech.com
> http://people.collaborativefusion.com/~wmoran/
>
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