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True enough - and remember that I did comment on the need to purge journal information - and I agree that a trigger can be less complex, as you mention below, and it can be more specific to certain fields.

It does seem the OP is not able to use either solution - what a sorry situation William is in!

Sigh!

Vern

On 1/6/2014 1:10 PM, Henrik Rützou wrote:
Vernon

if you create a table szed 10 TB and you journal it that must mean 10 TB
extra


On Mon, Jan 6, 2014 at 8:07 PM, Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>wrote:

Dieter - I don't believe I compared performance between the 2 options -
I said that journaling performance is no longer the problem it used to
be 25 years ago, when many people rejected journaling for that reason.

As to triggers, there is a potential for a performance problem, due to
the synchronous nature of calling triggers.

NOTE - these are mutually exclusive - they have nothing to do with one
another.

So there was nothing where I replicated myths. Done! and Done!

Vern

On 1/6/2014 12:27 PM, D*B wrote:
@Vernon:
replicating myths about performance, without verification is part of the
problem William (and others) have!!!
Comparing journaling with a trigger, writing a record (something like a
shortened trigger image):
- read operations: no diffrence to the same operation with none of these
- insert operations: journal will outperform the trigger by far!!! it's
a low level operation
- update/delete operations: the trigger might be better (has to be
evaluated), if it is not fired for this operation. If you would need
triggers for this too: journal will outperform triggers by far!!!
D*B
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