You have decided to implement automatic undo management. which of these steps is optional?
a. set the parameter undo_management.
b. create an undo tablespace.
c. set the parameter undo_retention.
d. restart the instance

The “tab” key can a. create extra cells in a word table *b. move from cell to cell in a word table c. move from the top of a column to the bottom of a column in a word table d. none of the above a. none of these answers are correct b. move from cell to cell in a word table c. move from the top of a column to the bottom of a column in a word table d. create extra cells in a word table