Repairability and REPAIR CATALOG
As of V11, Db2 does a “sanity check” with the first physical open of a page set to ensure that the schema definitions for tables within the page set match their descriptions in the catalog. If there is a mismatch, there will be an abend with reason code X'00C900E3'. Utilities that scan table spaces also do this check, and on a mismatch, the utility fails with the following message:
DSNU590I, RESOURCE NOT AVAILABLE, REASON=X'00C900E3'
This reliability checking failure is typically caused when moving objects using ...