Error bpbrm(pid=2160) cannot create data socket,
Please ensure that all of these log folders exist:
On media server: bpbrm
On client: bpcd and dbclient
(Please note that dbclient needs 777 permissions)
Please rename logs to reflect process name (e.g. bpbrm.txt) and upload as File attachments.
If I remember correctly, status 21 on the control file backup is one of the things that can often be migated by increasing the CLIENT_ timeouts and/or and allocate the resource for this backup faster.