Oracle has a "home selector" feature to allow you to change the environment between multiple $ORACLE_HOME directories, but is is just as easy to create a bat file for each oracle version to set the appropriate environment and execute it before executing sqlplus. true/false

It should be b i believe

You have several options when you want to enter data manually in excel. you can enter data in one cell, in several cells at the same time, or on more than one worksheet at the same time. the data that you enter can be numbers, text, dates, or times. you can format the data in a variety of ways. and, there are several settings that you can adjust to make data entry easier for you.

The printer costed $185,000 if i recall correctly