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I replied to a question: ORA-06531:Reference to uninitialized collection, Upgrade from 10g to 18
after repling I returned to content page: SQL & PL/SQL and I saw that reply count is shown as 0. after me GregV has replied and now it is shown as 1.
This happens sometimes if Oracle updates the servers in the background. Just wait a day and see if it will show the correct number of answers.