OUI – 10021:::

OUI – 10021

Message
The target area <location_of_oraInventory> is being written to by another session. A read lock cannot be obtained.
Solution
check your user permission :

sudo chown your_user -R your_oracle_home_path

sudo chmod 775 -R your_oracle_home_path

check your disk space

might be your disk space is full and can not write some file

it's fixed my problem.