One of your databases supports an OL

多选题
One of your databases supports an OLTP workload. The default UNDO tablespace is fixed size with:1 RETENTION NOGUARANTEE2 UNDO_RETENTION is 12 minutesUser SCOTT get this error after a query on the SALES table has run for more than 15Minutes: ORA- 01555: snapshot too oldWhich three factors taken separately or in some combination might be the cause?

A、 An update to the SALES table was committed after the query began.

B、 An uncommitted update to the SALES table was made more than 12 minutes before the query began.

C、 An update was made to the SALES table before the query began.

D、 An uncommitted delete to the SALES table was made more than 12 minutes before the query began.

E、 A committed delete to the SALES table was made more than 12 minutes before the query began.

F、 A committed update to the SALES table was made more than 12 minutes before the query began.

G、 An update was made to the SALES table after the query began.

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