| ORA-14646: | Specified alter table operation involving compression cannot be performed in the presence of usable bitmap indexes | | Cause: | The first time a table is altered to include compression, it cannot have a usable bitmap index (partition). Subsequent alter table statements involving compression do not have this same restriction. | | Action: | A) Drop any bitmap indexes defined on the table, and re-create them once the operation is complete or, B) Mark all index fragments of all bitmap indexes defined on the table UNUSABLE and rebuild them once the operation is complete.
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