2017-08-15 Hicom DR refresh failed for HEELIVE.vwTeachingSession

Date2017-08-14
Authors
StatusComplete
SummaryHicom's DR refresh failed so the TIS ETLs only had access to the previous day's data.
ImpactRevalidation nationally had stale data.

Root Cause

Hicom have a changed the following column datatypes;

Location VC50 > VC100

Subject VC(max) > Text

Notes VC(max) > Text

Trigger

Their nightly scheduled update.

Resolution

Updated Mirror table definations

Detection

Ran daily row count checks between DR and Mirror and noted the following differences;

ownertab_namercdistinc_rcVlookup Mirror RCRC DiffDuplicates exist in DR
HEELIVEvwTeachingSession323336323336323315-21No

Action Items

Action ItemTypeOwnerIssue

mitigate/prevent

Timeline

 

Supporting Information

e.g. monitoring dashboards