Oracle Error Message
ORA-13712: Cannot perform ADDM analysis on AWR snapshots from previous releases. Snapshot version “string” do not match the database version “string”.
Reason for the Error
ADDM analysis can only be performed on AWR snapshots taken in the current release.
Solution
One can still generate AWR and ASH reports using ?/rdbms/admin/awrrpt and ?/rdbms/admin/ashrpt on these snapshots to analyze the data in them.