While starting the Oracle Database Create Assistance GUI utility, it gives error as unable to create a log and failed to start
It may be the issue with the space in of the mount point of the file system.
The free space in the database mount point is less then desired, therefore it gives error.
Please check df -h for the space in the linux file system.
In order to allocate the space, ask the storage team to add the disk and then reszie the the mount point.
visit the link mentioned below to see the step to resize the disk.
https://www.ryadel.com/en/resize-extend-disk-partition-unallocated-disk-space-linux-centos-rhel-ubuntu-debian/