Operating system mein race condition tab hoti hai jab do ya zyada processes ya threads ek hi memory location ko ek hi waqt par access karne ki koshish karte hain bina proper coordination ke. Isse unpredictable aur incorrect results aa sakte hain. Isko prevent karne ke liye synchronization techniques jaise locks ya semaphores use kiye jaate hain.Race condition ek aisi situation hoti hai jahan multiple processes ya threads ek hi resource ya memory location ko access karne ki koshish karte hain, bina proper synchronization ke. Isse unpredictable results aa sakte hain, kyunki kaun process ya thread pehle access karega, ye kisi ko nahi pata hota. Jaise ki, do threads agar ek hi variable ko simultaneously modify karte hain bina synchronization ke, to data corruption ho sakti hai ya system unstable ho sakta hai.
