You can apply to find out if your current or former partner has a history of violent criminal offences, through the NSW Domestic Violence Disclosure Scheme (DVDS).
The NSW Police Force will conduct criminal record checks, and process applications within 2 weeks. If they believe there's a serious threat to your life or safety, you'll be told of any relevant convictions within 48 hours.
The person you're enquiring about will not be told of your application.
For details on criminal checks, follow the below link of call me on 0415 604 593 to discuss your matter.
Matthew Buckley - Solicitor