Canara Bank is a Public Sector bank. The bank was nationalised in 1969 and now is owned by the Government of India. NOC is listed as one of the documents to be submitted but this is in case of a Government Employee. You might not fall under this Category for 2 reasons. One being you only completed your probationary period and 2nd jobs at Nationalised banks do not fall under Government Jobs. Nevertheless, to be still on a safer side and not to be let thrown surprises in the last minute, we would suggest you to take a NOC certificate as well. The list of the documents that you need for document verification can be found at: https://sscportal.in/cgl/tier-4/document-verification-checklist. But to give you an idea, here is the list:

1. Call Letter (Admit Card)
2. Matriculation Certificate (10th) in support of Date of Birth
3. Education Certificate in Support of educational qualifications
4. ST/SC/OBC Category Certificate
5. Disability Certificate
6. No Objection Certificate in Case of Govt. Employee
7. Discharge Certificate for Ex. Servicemen
8. A Duly filled Post Preference Option form
9. Original Id Proof
10. Passport Size Photographs
11. Photocopies of all above mentioned Certificates/Documents (2 sets) (Self Attested)