However since we deployed VEEAM we have come across a number of contradictory and frankly scary papers/posts about why you should NOT backup Oracle using any product that uses VMware snapshot technology.
Previously, VMs running obsolete versions of Oracle have to be backed up, using pre-freeze/ post-thaw-scripts in order to complete consistent backups of Oracle databases. In contrast, recent versions of Oracle Database running on Windows can be quiesced by VSS for backup, thus, the only thing that needs to be done in this case is enabling of Application Aware Image Proccesing option.
AAIP allows Veaam Backup and Replication to create transactionally consistent backup of a VM running VSS-aware applications without powering them off. Not only does it ensure successful VM recovery, as well as proper recovery of all applications installed on the VM without any data loss, but also it notifies applications about them being backed up.
Long story short, just enable AIMP in the corresponding job setting, and you’d be ok with it.
Hope this helps.