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DB2 Z/OS Sync Logical and Physical Parts after full Reorg
ADD PART was used to insert a new physical partition in the middle of a tablespace. Now the Logical and Physical partitions are mismatch.
If a Full Reorg on the full tablespace is performed, the utility can include an option to resync the logical and physical parts.
Real Life Example: A Reorg with DISCARD on a PBR tablespace is needed. The limitkey is a Timestamp. SQL was used to determine what partitions need to be Reorgd, giving the MAX(PARTITION)
WHERE LIMITKEY <= CURRENT_TIMESTAMP - 7 years
If ADD PARTITION is used to INSERT a new partition in the middle of the current range, the MAX(PARTITION) is listing the new, higher PHYSICAL partition. The automated SQL is choosing too many partitions.
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