Running reorg rebuild ... online takes place in a single transaction. Recovering the work performed by the online parameter is similar to recovering the work performed without the online parameter. Consider these issues when rolling back work performed with the online parameter:
Runtime rollback of the utility deallocates the pages allocated by the online parameter.
Crash recovery clears the allocation status of the extents allocated by the online parameter, and makes them available for other tasks.
In a high availability environment during node-failover recovery, if reorg rebuild ... online attempts to initiate a physical or logical lock, it waits for the recovery to complete before acquiring the lock.
