Re: Drop a column in a 9 million records table

From: <Riyaj_Shamsudeen_at_i2.com>
Date: Mon, 05 Mar 2001 12:24:14 -0800
Message-ID: <F001.002C3EC4.20010305101617@fatcity.com>

When you drop a column the data in that column need to be removed, which is a change to the database block and hence Oracle has to create undo for the change. So rollback segment gets filled. You could control this "commit" behavior using the checkpoint option..

alter table table_name drop column bar checkpoint 250;

If the statement fails then you have to use 'alter table foo drop columns continue' command to continue the operation.. Thanks
Riyaj "Re-yas" Shamsudeen
Certified Oracle DBA
i2 technologies www.i2.com

                                                                                       
                       
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The database is Oracle8.1.7. I used the syntax: alter table foo drop column bar;

Why it gives run out of RBS error? Is alter table a DDL? How does it use RBS?

TIA Chris Harvest

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Received on Mon Mar 05 2001 - 14:24:14 CST