ORLBKNOV4BLK, Region rrrr (dddd) has V4 format blocks. Database upgrade required. ONLINE ROLLBACK cannot continue

MUPIP Error: Issued by MUPIP ROLLBACK -ONLINE when it finds the region rrrr mapped to database file dddd contains V4 format blocks - online rollback does not support old format blocks.

Action: Upgrade the database to the current major version before attempting to use online rollback.

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