upstream sent too big header while reading response header from upstream
Add:
fastcgi_buffers 16 16k;
fastcgi_buffer_size 32k;
proxy_buffer_size 128k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;
To server{} in nginx.conf
Install Veeam plugin Oracle linux rpm -Uvh --nodigest --nofiledigest VeeamPluginforOracleRMAN-12.2.0.334-1.x86_64.rpm