Root Cause: This issue is related to a change made in Oracle version 188.8.131.52.
Oracle has recommended that the '_optimizer_unnest_all_subqueries' parameter be set to false at the session level as a workaround to the issue. Please contact Oracle for additional information regarding this parameter.
Fix Status: No Fix
The Oracle parameter '_optimizer_unnest_all_subqueries' can be set to specifically apply to the HISTORY_PURGE Job by editing the Automation Engine's $AW_HOME/sql/deljhist.sql script.
Please contact Automic Support for the SQL statement.