Spawn a command window and run the task. However, I'd strongly advise against this. There is absolutely no need to automate the running of ESEUTIL--this tool should be used only when necessary to diagnose and fix some particular condition.-- Ed Crowley MVP"There are seldom good technological solutions to behavioral problems.".."inmar_mine" wrote in message news:33771e2d-7623-41a2-9bfc-9635b97ffde9...Hi, I'm trying to write a small program using c++ which will validate the exchange database and logs using eseutil. What is the best way to achieve this? Either I can go for creating a thread for each database to run eseutil or create a process? Running eseutil against database takes long time for checksum validation. Can I go for launching concurrent thread/process? so that validation will be faster. Also what other factors (like number of processor, processor speed,...)need to be considered in creating multiple threads/process ?Any suggestions plz.....ThanksInmarEd Crowley MVP "There are seldom good technological solutions to behavioral problems."