ORA-14646 When Compressing Table (Doc ID 1353358.1)

Last updated on MARCH 27, 2014

Applies to:

Oracle Server - Enterprise Edition - Version: 11.2.0.1 to 11.2.0.3 - Release: 11.2 to 11.2
Information in this document applies to any platform.

Symptoms

    You find that if altering a table or partition to include compression which also included a preexisting bitmapped index results in an ORA-14646. This error warns you that you will not be able to ALTER the table because it contains a bitmapped index.
   Marking the indexes as unusable will allow you to alter the table to include compression,  however, attempting to enable the bitmapped indexes on the table will fail.
Dropping and rebuilding the bitmapped index succeeded.

Why is this? Is this a BUG?

Changes

Altering a table that has preexisting bitmap indexes to enable compression .

Cause

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