One person is issued one and only onePAN CardNumber.No matter from how many sources you receivesearnings from, the PAN Card Number will be same.There won’t be any problem with that.
The main purpose of the PAN Number is to track your earnings from all the sources so that you pay taxes on your total earnings. The earning may include salary, bank interest, profits from share markets, 2nd job earing, royalty paid to you etc. PAN Number is the key to link all of them.