I have an issue with Sql Server 2012 and Datastage which extracts the table(just select * from table) and loads into one file without any transformation in between. Source table has around 45million rows. Datastage Process extracts upto 22million rows and then it stalls forever(running state). I had investigated into the Database and i could see the transaction runs on database for some time(runnable and suspended state) for sometime and it disappears suddenly. I am surprised to see Datastage Process still shows rows are being extracted even after transaction is disappears and Datastage process up to 22million rows and then do nothing.
Can someone advise what could be the problem and where to look for as i am new to DB admin activities.