Distance

Hello,
Yes, you can do many course. Oracle/Mysql/DB2/DBA - This is one of the most reliable course options, but you will not get any work of software development on its basis, yet you can continue doing it, if you have interest in DBMS. NET/PHP - These are popular languages which are direct counterparts of Java. These are mainly used for light weight application development on the server side and client side. NET is also easy to master compared to the long Java Library. Java/J2EE - The server side software development of web is mostly done by this most secure language option. Most of the banks in India and abroad implement their web applications using Java/J2EE only. CCNA/MCSE - These networking certifications can employ you as a network engineer and again even in the recession period these were the most reliable career options, if not most exciting. If you can these above course along with BCA then you will good in future. Thanks.

Firstly, I would suggest you to take up work post the BE course. This gives you proper hands-on corporate exposure with whatever you have studied. As far as the distance courses are concerned, be sure to check the reason why you would want a distance course. Is there any reason, like to enhance your practical or specialised skills in mechanical field for job prospects? Or is it altogether a shift, like a distance MBA? If anyway you are ready for further studies, my suggestion would be to get a couple of years of real-life professional experience. Figure out things and then make a move.
For Masters, countries like Germany hold a great path ahead and if it's MBA, then yes, 1-year or distance or even distance + classroom modes are available.