As you have asked about the probationary officer (PO) vacancy in Oriental Bank of Commerce, I am giving you information about it, check below for the details
I want to tell you that as of now there is no vacancy for Probationary Officer in Oriental Bank of Commerce.

However, you can check its website regularly to know about it.
To check it
Go to Oriental Bank of Commerce website
Click on Recruitment, the page open look like




Here you will get the details about the vacancy when available.
Here I found following:

Joining of newly recruited SWO 'A' under CWE Clerk-V on 23.05.2016 (Batch-I)
Recruitment of Specialist Officers - 2016-17imgg
Apply Online
Recruitment of Specialist Officers - 2015-16
Candidates Selected for Personal Interview - IT, Forex, Debt&Equity
Candidates Shortlisted for Personal Interview - Risk Management
Candidates Selected for Offer of Appointment - Risk,IT,Forex,Debt&Equity
Recruitment of Faculty Members - 2015-16