Performance of update query for single column vs multiple column

Hi All,
I could not find any answer for this, does it ever matter in terms of performance updating single column versus multiple column in a single update query.
For eg. table consisting of 15 columns, what would be the difference in performance when one column is update in the single query against another update query where 15 columns are updated.
Please do keep in mind my table columns in actually could be around 150+.
Thanks for any information provided.

If updated columns aren´t on where clause , then the only impact of 15 columns will be a increase on redo generation, and a possible chainning row.
So since the redo is one of the things that have a large impact, the answer is yes.
The performance will be slower.
Regards
Helio Dias.
http://heliodias.com
OCE SQL, OCP 9i

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How to merge multiple rows into single row (but multiple columns) efficiently.
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Hi,
That's called Pivoting . The forum FAQ has a section on this subject: {message:id=9360005}
I hope this answers your question.
If not, post your best attempt, along with a little sample data (CREATE TABLE and INSERT statements, relevant columns only), and also post the results you want from that data. (You did post the results you wanted, but they're very hard to read because they're not formatted. Use \ tags, as described in the forum FAQ, below.)
Explain, using specific examples, how you get the results you want from the data given.
Always say which version of Oracle you're using (e.g., 11.2.0.2.0). This is always important, but especially so with pivots.
See the forum FAQ {message:id=9360002}

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0001 PHONE_NUMBER 555-555-0001
0001 EMAIL [email protected]
0001 CURRENCY USD
0002 PHONE_NUMBER 555-555-0002
0002 EMAIL [email protected]
0002 CURRENCY USD
0003 PHONE_NUMBER 555-555-0003
0003 EMAIL [email protected]
0003 CURRENCY CAD
This is what I would like to have:
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phone_number_v varchar2(50);
EMAIL_v varchar2(50);
CURRENCY_v varchar2(50);
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select ATTRIBUTE_VALUE INTO CURRENCY_v from test
where person_id=my_test_curs.person_id
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VALUES (my_test_curs.person_id,phone_number_v,EMAIL_v,CURRENCY_v);
END LOOP;
END;
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INSERT ALL
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