Partition maintenance operations are most easily performed on local indexes. Local indexes do not invalidate a global index when partition management takes place. Use INCLUDING INDEXES in the PEL statement to exchange the local indexes with the equivalent indexes on the separate table so that no index partitions get invalidated. For PEL, you can update global indexes as part of the load. Use the UPDATE GLOBAL INDEXES extension to the PEL statement. If an index requires updating, then the PEL takes much longer.