Add extra space to ubutu guest os in vmware

sudo apt-get install gparted

1-Select your virtual machine Ubuntu and then "right-click",
choose "Settings" -> Add -> Hard Disk -> choose IDE/SCSI -> decide the capacity -> disk file nameubuntu(2).vmdk [your new virtual disk]


2. boot up your ubuntu

sudo apt-get install xfsprogs

mkfs.xfs /dev/sdb

fdisk -l

mkdir /oracle
mount /dev/sdb /oracle

modify your "/etc/fstab" file, and adding
/dev/sdb /oracle xfs defaults 0 0

chmod 777 /oracle