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After Installing Discoverer Desktop (11.1.1.3.0) on windows 7 I got this error when i started the discoverer desktop. "The program can't start becuase MSVCR71.dll is missing from your computer. Try reinstalling the program to fix this proble" After doing a bit googling i found out the following steps will fix the issue and start Discoverer desktop normally . Dwnload MSVCR71.dll from dll-files.com website, extract it and copy the particular file to C:\Windows\System32, if you are using 64bit copy the file to C:\Windows\SysWOW64  Oracle has a support note with id 1255244.1

du and ls show different sizes for the same file After uncompressing a file i was confused to see different sizes for the same file with du and ls command When i used du it was showing the size But ls output was showing a different size So i realized these commands works in different ways ls with option -l shows the allocated size but du shows the actual size (amount of space used). If you want to see actual size with ls use -s option. If you use this way you can see both ls and du gives same output, in this case actual size is printer first