RE: analyze after adding a nullable column

From: <genegurevich_at_discover.com>
Date: Mon, 29 Oct 2007 17:05:06 -0500
Message-ID: <OF47728344.D07936BF-ON86257383.0079145D-86257383.007950DC@discover.com>

Alvaro,

No, currently the new columns is not used anywhere . The number of rows in the tables is in hundred of millions.
The new columns is char(1) and the row length will increase only marginally (all tables a pretty wide)

thank you

Gene Gurevich

                                                                           
             "Alvaro Jose                                                  
             Fernandez"                                                    
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                                       RE: analyze after adding a nullable 
             10/04/2007 03:10          column                              
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Hi Gene,

It depends on the datatype and length, if you add a CHAR (not an VARCHAR) or some other fixed length types (size), and depending also of the number of rows in the table, the plans would be need to be reevaluated, if the average row length got significantly higher (mainly for recosting FTS)

I'm assuming you are not yet using the new column as filter predicate in the queries, am I right?

alvaro

Hi everybody:

Do I need to reanalyze the table if I add a nullable column and do not populate it with values (oracle 10.2.0.3)?

thank you

Gene Gurevich

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http://www.freelists.org/webpage/oracle-l Received on Mon Oct 29 2007 - 17:05:06 CDT