In User Bulk actions, when more than 1000 users are marked as selected, a dmlreadexception occurs:

ORA-01795: maximum number of expressions in a list is 1000

SELECT id, MOODLELIB.UNDO_MEGA_HACK(MOODLELIB.TRICONCAT(firstname, '*OCISP*', lastname)) AS fullname FROM m2user WHERE id IN (21,.......,1752) ORDER BY fullname

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This is caused by the function get_selection_data because it uses directly an IN sentence without using get_in_or_equal function from the DML library.