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Error: Error: Underlying DBMS error (-51) Cannot Modify the Layer

Error Message

Using sdelayer -o alter to drop entity types on an sde layer stored in db2 will return the error:

"Error: Underlying DBMS error (-51).
Error: Cannot Modify the Layer
Underlying DBMS error"

Cause

This is a known issue.

Solution or Workaround

This issue was resolved with service pack ArcSDE 8.1.2, which can be downloaded through the link in Related Information, below: ESRI Patches and Service Packs. Click on ArcSDE and under Version 8.1.2, select ArcSDE 8.1.2 Service Pack 1. Follow download instructions.

    Related Information