RE: Drop a column in a 9 million records table

From: Vadim Gorbounov <vgorbounov_at_simplyengineering.com>
Date: Mon, 05 Mar 2001 12:04:17 -0800
Message-ID: <F001.002C3F00.20010305103025@fatcity.com>

Hi, when you
alter table foo drop column bar;
Oracle will update every block to release space, used by "bar" before. This operation is actually DML, and requires RBS. alter table foo set unused (bar );
This is like drop, but doesn't release the space. Pretty fast, no rollback. You may deallocate unused space later, with deallocate unused command, or while dropping the next one.

Vadim Gorbounov
Oracle DBA

-----Original Message-----
Sent: Monday, March 05, 2001 11:10 AM
To: Multiple recipients of list ORACLE-L

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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Author: CC Harvest
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Author: Vadim Gorbounov
INET: vgorbounov_at_simplyengineering.com

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