If required, remove the existing partition on /dev/sdb which is mounted to /u01 from the Exalytics Machine. You cannot create a repository on a Oracle Virtual Machine disk which contains a partition.
Before removing the existing partition, remember to back up all data on sdb1. If you are removing the existing partition on a new machine, you do not need to back up your data.
To remove existing partitions:
# parted /dev/sdb
The output should look similar to the following:
GNU Parted 1.8.1 Using /dev/sdb Welcome to GNU Parted! Type 'help' to view a list of commands.
# rm 1
The existing partition is removed.