Unable to generate ASH report due to error ORA-01722

Unable to generate ASH report due to error ORA-01722
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When attempting to generate ASH report with "ashrpti.sql" or "ashrpt.sql",
it failed with ORA-01722.


Solution :
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Manually set DEFINE ON before executing ashrpt.sql

SQL> set define on
SQL> @$ORACLE_HOME/rdbms/admin/ashrpt.sql