多选题Oracle9i provides a database package called dbms_redefinition to perform an online rebuild of a table. Which two steps are you recommended to do prior to issuing thedbms_redefinition_start_redef table procedure call？（）AGrand privileges on the interim table.BInvoke the dbms_redefinition.can_redef_table procedure.CInvoke the dbms_redefinition.sync_interim_table procedure.DCreate any triggers， indexes， or constraints on the interim table.ECreate an empty interim table with all the desired characteristics.
多选题
Oracle9i provides a database package called dbms_redefinition to perform an online rebuild of a table. Which two steps are you recommended to do prior to issuing thedbms_redefinition_start_redef table procedure call？（）
A
Grand privileges on the interim table.
B
Invoke the dbms_redefinition.can_redef_table procedure.
C
Invoke the dbms_redefinition.sync_interim_table procedure.
D
Create any triggers， indexes， or constraints on the interim table.
E
Create an empty interim table with all the desired characteristics.
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