How to find out when an Oracle table was updated the last time in Oracle 8i?

Could you please tell me how to find out when an Oracle table was updated the last time in Oracle 8i. In Oracle 10g you could use the following query SQL> SELECT SCN_TO_TIMESTAMP(MAX(ora_rowscn)) from <table_name>; but this doesn't work in Oracle 8i.

Any help will be appreciated.

Thanks,
Ashoke

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