ORA-14646 When Compressing Table
(Doc ID 1353358.1)
Last updated on SEPTEMBER 06, 2021
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 to 188.8.131.52 [Release 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
SymptomsYou 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?
ChangesAltering a table that has preexisting bitmap indexes to enable compression .
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