ORA Database Error Messages ORA-02821: Unable to read the requested number of blocks July 1, 2015 mpbod ORA-02821: Unable to read the requested number of blocks Cause: A server could not read the number of blocks that was requested. The end of the file may have been read. Action: Check the file on disk. Back to previous menu https://support.oracle.com/ http://www.oracle.com/ Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)