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Monitoring
1. Check catalog consistency to ensure the catalog on each host in the cluster is consistent and in good state. For each database
run $GPHOME/bin/lib/gpcheckcat -O
2. Check persistent table catalog :In downtime window, and no users are on the system. For each database
run $GPHOME/bin/lib/gpcheckcat -R persistent
3. Check pg_class entry that does not have any correspond pg_attribute entry. In downtime window, and no users are on the system. For each database
run $GPHOME/bin/lib/gpcheckcat -R pgclass
4. Check temporary schema leaks :In downtime window, and no users are on the system. For each database
run $GPHOME/bin/lib/gpcheckcat -R namespace
5. Check constraints on randomly distributed tables : In downtime window, and no users are on the system. For each database
run $GPHOME/bin/lib/gpcheckcat -R distribution_policy
6. Check for dependency on non-existant objects : In downtime window, and no users are on the system. For each database
run $GPHOME/bin/lib/gpcheckcat -R dependency
Repair