On Tue, Apr 26, 2011 at 10:12 PM, Greg Stark <gsstark@mit.edu> wrote:
> On Tue, Apr 26, 2011 at 11:55 PM, Josh Berkus <josh@agliodbs.com> wrote:
>> Here's where I wanted autonomous transactions just last week, and didn't
>> have them so I had to use a python script outside the database:
>>
>> -- doing a CREATE INDEX CONCURRENTLY for 150 partitions on a partitioned
>> table.
>>
>> -- doing a backfill operation for 10GB of computed data, taking 8 hours,
>> where I don't want to hold a transaction open for 8 hours since this is
>> a high-volume OLTP database.
>
> These don't seem like compelling use cases at all to me. You said you
> had to fall back to using a python script outside the database, but
> what disadvantage does that have? Why is moving your application logic
> into the database an improvement?
>
> Honestly in every case where I've had to move code that had been in a
> function to the application I've found there were tons of benefits.
> Everything from being able to better control the behaviour, to being
> able to parallelize the processing over multiple connections, being
> able to run parts of it at different times, being able to see the
> progress and control it from another session, being able to manage the
> code in version control, the list just goes on. Trying to move all the
> code into the database just makes life harder.
my experience has been the opposite.
merlin