Trace - to Capture all or most queries

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Trace - to Capture all or most queries

balasach82

SSCrazy Eights

Points: 9653
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March 18, 2013 at 8:49 am

#271785

A. Are black box and defaula traces same?
B. Is it possible to capture all the queires in the black/default trace, if it does not degrade sql performance.

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Lowell SSC Guru Points: 323504 More actions · Answer 1

balasach82 (3/18/2013)
A. Are black box and defaula traces same?

Yes, but that trace only captures changes realted to DDL operations, ie CREATE TABLE/ALTER TABLE etc.

B. Is it possible to capture all the queires in the black/default trace, if it does not degrade sql performance.

with the default trace, no.

With your own trace to capture DML statements, then possible, yes; but on a busy server, though you could generate gigs of logs you really don't care about, and those logs could fill up the disk and shut down your server. a trace should be targets to what you really need to capture, and not an everything trace. also note there are a lot of other functionality to consider that might accommodate whatever you are tryingh to do:

a third part log reader, extended events, SQL audit, SQL Change Data capture, adding custom triggers, adding your own custom trace, and probably more functionalities i couldn't think of offhand.

Lowell

--help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!

Jeff Moden SSC Guru Points: 1003853 More actions · Answer 2

Which company asked these as interview questions?

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

balasach82 SSCrazy Eights Points: 9653 More actions · Answer 3

These arent interview questions. While reading about blackbox trace, default/blackbox were used interchangebly which led to the confusion.

Jeff Moden SSC Guru Points: 1003853 More actions · Answer 4

Ah. Understood. In that case, Lowell hit the nail on the head across the board.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)