Huge directory size of oradiag_user

Read sqlnet.log inside home directory to make sure that we dealing with the same problem.

Directory does not exist for read/write [/usr/lib/oracle/11.2/client64/lib/log]

Solution

$ sudo mkdir -p /usr/lib/oracle/11.2/client64/lib/log/diag/clients

$ sudo chmod 777 /usr/lib/oracle/11.2/client64/lib/log/diag/clients

Now, you can savely remove oradiag directory. And i already check , directory /usr/lib/oracle/11.2/client64/lib/log/diag/clients has no files in it.