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Oracle® Database SQL Language Reference
11g Release 2 (11.2)

Part Number E17118-03
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DROP ROLLBACK SEGMENT

Purpose

Use the DROP ROLLBACK SEGMENT to remove a rollback segment from the database. When you drop a rollback segment, all space allocated to the rollback segment returns to the tablespace.

Note:

If your database is running in automatic undo mode, then this is the only valid operation on rollback segments. In that mode, you cannot create or alter a rollback segment.

Prerequisites

You must have the DROP ROLLBACK SEGMENT system privilege, and the rollback segment must be offline.

Syntax

drop_rollback_segment::=

Description of drop_rollback_segment.gif follows
Description of the illustration drop_rollback_segment.gif

Semantics

rollback_segment

Specify the name the rollback segment to be dropped.

Restrictions on Dropping Rollback Segments This statement is subject to the following restrictions:

Example

Dropping a Rollback Segment: Example The following syntax drops the rollback segment created in "Creating a Rollback Segment: Example":

DROP ROLLBACK SEGMENT rbs_one;